Long-term thermal sensitivity of Earth's tropical forests
Sullivan, Martin J.P. ; Lewis, Simon L. ; Affum-Baffoe, Kofi ; Castilho, Carolina ; Costa, Flávia ; Sanchez, Aida Cuni ; Ewango, Corneille E.N. ; Hubau, Wannes ; Marimon, Beatriz ; Monteagudo-Mendoza, Abel ; Qie, Lan ; Sonké, Bonaventure ; Martinez, Rodolfo Vasquez ; Baker, Timothy R. ; Brienen, Roel J.W. ; Feldpausch, Ted R. ; Galbraith, David ; Gloor, Manuel ; Malhi, Yadvinder ; Aiba, Shin Ichiro ; Alexiades, Miguel N. ; Almeida, Everton C. ; Oliveira, Edmar Almeida de; Dávila, Esteban Álvarez ; Loayza, Patricia Alvarez ; Andrade, Ana ; Vieira, Simone Aparecida ; Aragão, Luiz E.O.C. ; Araujo-Murakami, Alejandro ; Arets, Eric J.M.M. ; Arroyo, Luzmila ; Ashton, Peter ; Aymard C, Gerardo ; Baccaro, Fabrício B. ; Banin, Lindsay F. ; Baraloto, Christopher ; Camargo, Plínio Barbosa ; Barlow, Jos ; Barroso, Jorcely ; Bastin, Jean François ; Batterman, Sarah A. ; Beeckman, Hans ; Begne, Serge K. ; Bennett, Amy C. ; Berenguer, Erika ; Berry, Nicholas ; Blanc, Lilian ; Boeckx, Pascal ; Bogaert, Jan ; Bonal, Damien ; Bongers, Frans ; Bradford, Matt ; Brearley, Francis Q. ; Brncic, Terry ; Brown, Foster ; Burban, Benoit ; Camargo, José Luís ; Castro, Wendeson ; Céron, Carlos ; Ribeiro, Sabina Cerruto ; Moscoso, Victor Chama ; Chave, Jerôme ; Chezeaux, Eric ; Clark, Connie J. ; Souza, Fernanda Coelho de; Collins, Murray ; Comiskey, James A. ; Valverde, Fernando Cornejo ; Medina, Massiel Corrales ; Costa, Lola da; Dančák, Martin ; Dargie, Greta C. ; Davies, Stuart ; Cardozo, Nallaret Davila ; Haulleville, Thales de; Medeiros, Marcelo Brilhante de; Aguila Pasquel, Jhon Del; Derroire, Géraldine ; Fiore, Anthony Di; Doucet, Jean Louis ; Dourdain, Aurélie ; Droissant, Vincent ; Duque, Luisa Fernanda ; Ekoungoulou, Romeo ; Elias, Fernando ; Erwin, Terry ; Esquivel-Muelbert, Adriane ; Fauset, Sophie ; Ferreira, Joice ; Llampazo, Gerardo Flores ; Foli, Ernest ; Ford, Andrew ; Gilpin, Martin ; Hall, Jefferson S. ; Hamer, Keith C. ; Hamilton, Alan C. ; Harris, David J. ; Hart, Terese B. ; Hédl, Radim ; Herault, Bruno ; Herrera, Rafael ; Higuchi, Niro ; Hladik, Annette ; Coronado, Eurídice Honorio ; Huamantupa-Chuquimaco, Isau ; Huasco, Walter Huaraca ; Jeffery, Kathryn J. ; Jimenez-Rojas, Eliana ; Kalamandeen, Michelle ; Djuikouo, Marie Noël Kamdem ; Kearsley, Elizabeth ; Umetsu, Ricardo Keichi ; Kho, Lip Khoon ; Killeen, Timothy ; Kitayama, Kanehiro ; Klitgaard, Bente ; Koch, Alexander ; Labrière, Nicolas ; Laurance, William ; Laurance, Susan ; Leal, Miguel E. ; Levesley, Aurora ; Lima, Adriano J.N. ; Lisingo, Janvier ; Lopes, Aline P. ; Lopez-Gonzalez, Gabriela ; Lovejoy, Tom ; Lovett, Jon C. ; Lowe, Richard ; Magnusson, William E. ; Malumbres-Olarte, Jagoba ; Manzatto, Ângelo Gilberto ; Marimon, Ben Hur ; Marshall, Andrew R. ; Marthews, Toby ; Almeida Reis, Simone Matias de; Maycock, Colin ; Melgaço, Karina ; Mendoza, Casimiro ; Metali, Faizah ; Mihindou, Vianet ; Milliken, William ; Mitchard, Edward T.A. ; Morandi, Paulo S. ; Mossman, Hannah L. ; Nagy, Laszlo ; Nascimento, Henrique ; Neill, David ; Nilus, Reuben ; Vargas, Percy Núñez ; Palacios, Walter ; Camacho, Nadir Pallqui ; Peacock, Julie ; Pendry, Colin ; Peñuela Mora, Maria Cristina ; Pickavance, Georgia C. ; Pipoly, John ; Pitman, Nigel ; Playfair, Maureen ; Poorter, Lourens ; Poulsen, John R. ; Poulsen, Axel Dalberg ; Preziosi, Richard ; Prieto, Adriana ; Primack, Richard B. ; Ramírez-Angulo, Hirma ; Reitsma, Jan ; Réjou-Méchain, Maxime ; Correa, Zorayda Restrepo ; Sousa, Thaiane Rodrigues de; Bayona, Lily Rodriguez ; Roopsind, Anand ; Rudas, Agustín ; Rutishauser, Ervan ; Abu Salim, Kamariah ; Salomão, Rafael P. ; Schietti, Juliana ; Sheil, Douglas ; Silva, Richarlly C. ; Espejo, Javier Silva ; Valeria, Camila Silva ; Silveira, Marcos ; Simo-Droissart, Murielle ; Simon, Marcelo Fragomeni ; Singh, James ; Soto Shareva, Yahn Carlos ; Stahl, Clement ; Stropp, Juliana ; Sukri, Rahayu ; Sunderland, Terry ; Svátek, Martin ; Swaine, Michael D. ; Swamy, Varun ; Taedoumg, Hermann ; Talbot, Joey ; Taplin, James ; Taylor, David ; Steege, Hans Ter; Terborgh, John ; Thomas, Raquel ; Thomas, Sean C. ; Torres-Lezama, Armando ; Umunay, Peter ; Gamarra, Luis Valenzuela ; Heijden, Geertje van der; Hout, Peter van der; Meer, Peter van der; Nieuwstadt, Mark van; Verbeeck, Hans ; Vernimmen, Ronald ; Vicentini, Alberto ; Vieira, Ima Célia Guimarães ; Torre, Emilio Vilanova ; Vleminckx, Jason ; Vos, Vincent ; Wang, Ophelia ; White, Lee J.T. ; Willcock, Simon ; Woods, John T. ; Wortel, Verginia ; Young, Kenneth ; Zagt, Roderick ; Zemagho, Lise ; Zuidema, Pieter A. ; Zwerts, Joeri A. ; Phillips, Oliver L. - \ 2020
Science 368 (2020)6493. - ISSN 0036-8075 - p. 869 - 874.
The sensitivity of tropical forest carbon to climate is a key uncertainty in predicting global climate change. Although short-term drying and warming are known to affect forests, it is unknown if such effects translate into long-term responses. Here, we analyze 590 permanent plots measured across the tropics to derive the equilibrium climate controls on forest carbon. Maximum temperature is the most important predictor of aboveground biomass (-9.1 megagrams of carbon per hectare per degree Celsius), primarily by reducing woody productivity, and has a greater impact per °C in the hottest forests (>32.2°C). Our results nevertheless reveal greater thermal resilience than observations of short-term variation imply. To realize the long-term climate adaptation potential of tropical forests requires both protecting them and stabilizing Earth's climate.
Multi-locus phylogeny of the genus Curvularia and description of ten new species
Marin-Felix, Y. ; Hernández-Restrepo, M. ; Crous, P.W. - \ 2020
Mycological Progress 19 (2020)6. - ISSN 1617-416X - p. 559 - 588.
Bipolaris - Dothideomycetes - Drechslera - Helminthosporioid fungi - Human and plant pathogens
Curvularia is a cosmopolitan genus that includes species associated with plants, animals and humans, several of which are of clinical significance. Some of these species are important pathogens of grasses, causing devastating diseases on cereal crops in the family Poaceae. In the present multi-locus study, ex-type and reference strains of Curvularia, as well as several strains deposited in the CBS culture collection of the Westerdijk Fungal Biodiversity Institute, were included. Based on ITS, GAPDH and TEF1 sequences, as well as phenotypic data, ten new species are described and illustrated: C. arcana, C. austriaca, C. canadensis, C. ellisii, C. pseudoclavata, C. pseudoellisii, C. pseudointermedia, C. pseudoprotuberata, C. siddiquii and C. tribuli. Moreover, the new combinations C. cactivora and C. patereae are proposed, and an epitype for C. oryzae-sativae is designated. In addition, illustrations and descriptions are provided for C. cactivora, C. ellisii, C. crassiseptata, C. neergaardii, C. oryzae, C. oryzae-sativae, C. protuberata and C. verruciformis. The description of C. pseudobrachyspora is emended, and its host and distribution records are updated.
A New High-Throughput Tool to Screen Mosquito-Borne Viruses in Zika Virus Endemic/Epidemic Areas
Moutailler, Sara ; Yousfi, Lena ; Mousson, Laurence ; Devillers, Elodie ; Vazeille, Marie ; Vega-Rúa, Anubis ; Perrin, Yvon ; Jourdain, Frédéric ; Chandre, Fabrice ; Cannet, Arnaud ; Chantilly, Sandrine ; Restrepo, Johana ; Guidez, Amandine ; Dusfour, Isabelle ; Vieira Santos de Abreu, Filipe ; Pereira Dos Santos, Taissa ; Jiolle, Davy ; Visser, Tessa M. ; Koenraadt, Constantianus J.M. ; Wongsokarijo, Merril ; Diallo, Mawlouth ; Diallo, Diawo ; Gaye, Alioune ; Boyer, Sébastien ; Duong, Veasna ; Piorkowski, Géraldine ; Paupy, Christophe ; Lourenco de Oliveira, Ricardo ; Lamballerie, Xavier de; Failloux, Anna Bella - \ 2019
Viruses 11 (2019)10. - ISSN 1999-4915
microfluidic analysis - molecular epidemiology - mosquito-borne viruses - surveillance
Mosquitoes are vectors of arboviruses affecting animal and human health. Arboviruses circulate primarily within an enzootic cycle and recurrent spillovers contribute to the emergence of human-adapted viruses able to initiate an urban cycle involving anthropophilic mosquitoes. The increasing volume of travel and trade offers multiple opportunities for arbovirus introduction in new regions. This scenario has been exemplified recently with the Zika pandemic. To incriminate a mosquito as vector of a pathogen, several criteria are required such as the detection of natural infections in mosquitoes. In this study, we used a high-throughput chip based on the BioMark™ Dynamic arrays system capable of detecting 64 arboviruses in a single experiment. A total of 17,958 mosquitoes collected in Zika-endemic/epidemic countries (Brazil, French Guiana, Guadeloupe, Suriname, Senegal, and Cambodia) were analyzed. Here we show that this new tool can detect endemic and epidemic viruses in different mosquito species in an epidemic context. Thus, this fast and low-cost method can be suggested as a novel epidemiological surveillance tool to identify circulating arboviruses.
Re-evaluation of Mycoleptodiscus species and morphologically similar fungi
Hernández-Restrepo, M. ; Bezerra, J.D.P. ; Tan, Y.P. ; Wiederhold, N. ; Crous, P.W. ; Guarro, J. ; Gené, J. - \ 2019
Persoonia 42 (2019). - ISSN 0031-5850 - p. 205 - 227.
Ascomycota - Dothideomycetes - Fungal pathogen - Muyocopron - Mycoses - New taxa - Sordariomycetes
Mycoleptodiscus includes plant pathogens, animal opportunists, saprobic and endophytic fungi. The present study presents the first molecular phylogeny and revision of the genus based on four loci, including ITS, LSU, rpb2, and tef1. An extensive collection of Mycoleptodiscus cultures, including ex-type strains from the CBS, IMI, MUCL, BRIP, clinical isolates from the USA, and fresh isolates from Brazil and Spain, was studied morphologically and phylogenetically to resolve their taxonomy. The study showed that Mycoleptodiscus sensu lato is polyphyletic. Phylogenetic analysis places Mycoleptodiscus in Muyocopronales (Dothideomycetes), together with Arxiella, Leptodiscella, Muyocopron, Neocochlearomyces, and Paramycoleptodiscus. Mycoleptodiscus terrestris, the type species, and M. sphaericus are reduced to synonyms, and one new species is introduced, M. suttonii. Mycoleptodiscus atromaculans, M. coloratus, M. freycinetiae, M. geniculatus, M. indicus, M. lateralis (including M. unilateralis and M. variabilis as its synonyms) and M. taiwanensis belong to Muyocopron (Muyocopronales, Dothideomycetes), and M. affinis, and M. lunatus to Omnidemptus (Magnaporthales, Sordariomycetes). Based on phylogenetic analyses we propose Muyocopron alcornii sp. nov., a fungus associated with leaf spots on Epidendrum sp. (Orchidaceae) in Australia, Muyocopron zamiae sp. nov. associated with leaf spots on Zamia (Zamiaceae) in the USA, and Omnidemptus graminis sp. nov. isolated from a grass (Poaceae) in Spain. Furthermore, Neomycolepto-discus venezuelense gen. & sp. nov. is introduced for a genus similar to Mycoleptodiscus in Muyocopronaceae.
Genera of phytopathogenic fungi: GOPHY 3
Marin-Felix, Y. ; Hernández-Restrepo, M. ; Iturrieta-González, I. ; García, D. ; Gené, J. ; Groenewald, J.Z. ; Cai, L. ; Chen, Q. ; Quaedvlieg, W. ; Schumacher, R.K. ; Taylor, P.W.J. ; Ambers, C. ; Bonthond, G. ; Edwards, J. ; Krueger-Hadfield, S.A. ; Luangsa-ard, J.J. ; Morton, L. ; Moslemi, A. ; Sandoval-Denis, M. ; Tan, Y.P. ; Thangavel, R. ; Vaghefi, N. ; Cheewangkoon, R. ; Crous, P.W. - \ 2019
Studies in Mycology 94 (2019). - ISSN 0166-0616 - p. 1 - 124.
DNA barcodes - Fungal systematics - New taxa
This paper represents the third contribution in the Genera of Phytopathogenic Fungi (GOPHY) series. The series provides morphological descriptions, information about the pathology, distribution, hosts and disease symptoms for the treated genera, as well as primary and secondary DNA barcodes for the currently accepted species included in these. This third paper in the GOPHY series treats 21 genera of phytopathogenic fungi and their relatives including: Allophoma, Alternaria, Brunneosphaerella, Elsinoe, Exserohilum, Neosetophoma, Neostagonospora, Nothophoma, Parastagonospora, Phaeosphaeriopsis, Pleiocarpon, Pyrenophora, Ramichloridium, Seifertia, Seiridium, Septoriella, Setophoma, Stagonosporopsis, Stemphylium, Tubakia and Zasmidium. This study includes three new genera, 42 new species, 23 new combinations, four new names, and three typifications of older names.
Genera of phytopathogenic fungi : GOPHY 2
Marin-Felix, Y. ; Hernández-Restrepo, Margarita ; Wingfield, M.J. ; Akulov, A. ; Carnegie, A.J. ; Cheewangkoon, R. ; Gramaje, D. ; Groenewald, J.Z. ; Guarnaccia, V. ; Halleen, F. ; Lombard, L. ; Luangsa-ard, J. ; Marincowitz, S. ; Moslemi, A. ; Mostert, L. ; Quaedvlieg, W. ; Schumacher, R.K. ; Spies, C.F.J. ; Thangavel, R. ; Taylor, P.W.J. ; Wilson, A.M. ; Wingfield, B.D. ; Wood, A.R. ; Crous, P.W. - \ 2019
Studies in Mycology 92 (2019). - ISSN 0166-0616 - p. 47 - 133.
26 new taxa - DNA barcodes - Fungal systematics - Six new typifications
This paper represents the second contribution in the Genera of Phytopathogenic Fungi (GOPHY) series. The series provides morphological descriptions and information regarding the pathology, distribution, hosts and disease symptoms for the treated genera. In addition, primary and secondary DNA barcodes for the currently accepted species are included. This second paper in the GOPHY series treats 20 genera of phytopathogenic fungi and their relatives including: Allantophomopsiella, Apoharknessia, Cylindrocladiella, Diaporthe, Dichotomophthora, Gaeumannomyces, Harknessia, Huntiella, Macgarvieomyces, Metulocladosporiella, Microdochium, Oculimacula, Paraphoma, Phaeoacremonium, Phyllosticta, Proxypiricularia, Pyricularia, Stenocarpella, Utrechtiana and Wojnowiciella. This study includes the new genus Pyriculariomyces, 20 new species, five new combinations, and six typifications for older names.
Multi-locus phylogeny and taxonomy of exserohilum
Hernández-Restrepo, M. ; Madrid, H. ; Tan, Y.P. ; Cunha, K.C. da; Gené, J. ; Guarro, J. ; Crous, P.W. - \ 2018
Persoonia 41 (2018). - ISSN 0031-5850 - p. 71 - 108.
Curvularia - Helminthosporium - Human and plant pathogen - New species - Setosphaeria - Systematics
Exserohilum includes a number of plant pathogenic, saprobic and clinically relevant fungi. Some of these species are of great importance in human activities, but the genus has never been revised in a phylogenetic framework. In this study, we revise Exserohilum based on available ex-type cultures from worldwide collections, observation of the holotypes and/or protologues, and additional isolates from diverse substrates and geographical origins. Based on nine nuclear loci, i.e., ITS, LSU, act, tub2, cam, gapdh, his, tef1 and rpb2, as well as phenotypic data, the genus and species boundaries are assessed for Exserohilum. Three species, i.e., E. novae-zelandiae, E. paspali and E. sorghicola, are excluded from the genus and reallocated in Sporidesmiella and Curvularia, respectively, whereas E. heteropogonicola and E. inaequale are confirmed as members of Curvularia. Exserohilum rostratum is revealed as conspecific with species previously described in Exserohilum such as E. antillanum, E. gedarefense, E. leptochloae, E. longirostratum, E. macginnisii and E. prolatum. Additionally, E. curvatum is revealed as synonym of E. holmii, and E. fusiforme of E. oryzicola. A total of 11 Exserohilum phylogenetic species are described, illustrated and discussed, including one novel taxon, E. corniculatum. The placements of 15 other doubtful species are discussed, and E. elongatum is validated.
|Monitoreo climático: herramienta al servicio de la caficultura Colombiana
Sarmiento, Ninibeth ; Ramírez, Carolina ; Jaramillo, Álvaro ; Restrepo, Alexander ; García López, Juan Carlos ; Wolters, W. ; Miguel Ayala, L. - \ 2018
Bogota : APC Columbia - ISBN 9789588490298 - 110
Scaling-up biofortified beans high in iron and zinc through the school-feeding program : A sensory acceptance study with schoolchildren from two departments in southwest Colombia
Beintema, Joni J.S. ; Gallego-Castillo, Sonia ; Londoño-Hernandez, Luis F. ; Restrepo-Manjarres, José ; Talsma, Elise F. - \ 2018
Food Science and Nutrition 6 (2018)4. - ISSN 2048-7177 - p. 1138 - 1145.
Beans - Biofortification - Colombia - Micronutrients - Sensory acceptability
Iron and zinc deficiencies are global health problems, affecting mostly pregnant women and young children. In 2016, biofortified iron and zinc beans were introduced in Colombia. The incorporation of biofortified beans into the national school-feeding program could facilitate adoption and potentially improve the nutritional status of large populations. However, biofortified beans have to be accepted in order to be consumed by populations. We therefore studied the sensory acceptability of two biofortified beans, BIO-101 and BIO-107, and local beans at schools with free feeding services in two departments of southwest Colombia. Measured on a five-point Likert scale, the mean overall scores were 3.88 ± 0.64, 3.79 ± 0.74, and 3.81 ± 0.76, for BIO-101, BIO-107, and the local bean varieties, respectively, without significant differences. The children in Piendamó (Cauca) slightly preferred BIO-107 over the local bean (p < .05) based on color, smell, and taste. The children in Caicedonia (Valle del Cauca) slightly favored the local bean over BIO-107 (p < .05), regarding size, smell, and taste. Overall acceptability in schoolchildren was good for all beans without significant differences. This study advocates incorporation of accepted biofortified beans in the school-feeding program, in order to reach large groups of schoolchildren and potentially improve their nutritional statuses.
Seasonal drought limits tree species across the Neotropics
Esquivel-Muelbert, Adriane ; Baker, Timothy R. ; Dexter, Kyle G. ; Lewis, Simon L. ; Steege, Hans ter; Lopez-Gonzalez, Gabriela ; Monteagudo Mendoza, Abel ; Brienen, Roel ; Feldpausch, Ted R. ; Pitman, Nigel ; Alonso, Alfonso ; Heijden, Geertje van der; Peña-Claros, Marielos ; Ahuite, Manuel ; Alexiaides, Miguel ; Álvarez Dávila, Esteban ; Murakami, Alejandro Araujo ; Arroyo, Luzmila ; Aulestia, Milton ; Balslev, Henrik ; Barroso, Jorcely ; Boot, Rene ; Cano, Angela ; Chama Moscoso, Victor ; Comiskey, James A. ; Cornejo, Fernando ; Dallmeier, Francisco ; Daly, Douglas C. ; Dávila, Nallarett ; Duivenvoorden, Joost F. ; Duque Montoya, Alvaro Javier ; Erwin, Terry ; Fiore, Anthony Di; Fredericksen, Todd ; Fuentes, Alfredo ; García-Villacorta, Roosevelt ; Gonzales, Therany ; Guevara Andino, Juan Ernesto ; Honorio Coronado, Euridice N. ; Huamantupa-Chuquimaco, Isau ; Killeen, Timothy J. ; Malhi, Yadvinder ; Mendoza, Casimiro ; Mogollón, Hugo ; Jørgensen, Peter Møller ; Montero, Juan Carlos ; Mostacedo, Bonifacio ; Nauray, William ; Neill, David ; Vargas, Percy Núñez ; Palacios, Sonia ; Palacios Cuenca, Walter ; Pallqui Camacho, Nadir Carolina ; Peacock, Julie ; Phillips, Juan Fernando ; Pickavance, Georgia ; Quesada, Carlos Alberto ; Ramírez-Angulo, Hirma ; Restrepo, Zorayda ; Reynel Rodriguez, Carlos ; Paredes, Marcos Ríos ; Sierra, Rodrigo ; Silveira, Marcos ; Stevenson, Pablo ; Stropp, Juliana ; Terborgh, John ; Tirado, Milton ; Toledo, Marisol ; Torres-Lezama, Armando ; Umaña, María Natalia ; Urrego, Ligia Estela ; Vasquez Martinez, Rodolfo ; Gamarra, Luis Valenzuela ; Vela, César I.A. ; Vilanova Torre, Emilio ; Vos, Vincent ; Hildebrand, Patricio von; Vriesendorp, Corine ; Wang, Ophelia ; Young, Kenneth R. ; Zartman, Charles Eugene ; Phillips, Oliver L. - \ 2017
Ecography 40 (2017)5. - ISSN 0906-7590 - p. 618 - 629.
Within the tropics, the species richness of tree communities is strongly and positively associated with precipitation. Previous research has suggested that this macroecological pattern is driven by the negative effect of water-stress on the physiological processes of most tree species. This implies that the range limits of inventory plots of closed canopy forest distributed across the western Neotropics taxa are defined by their ability to occur under dry conditions, and thus in terms of species distributions predicts a nested pattern of taxa distribution from wet to dry areas. However, this 'dry-tolerance' hypothesis has yet to be adequately tested at large spatial and taxonomic scales. Here, using a dataset of 531 we investigated how precipitation, evaluated both as mean annual precipitation and as the maximum climatological water deficit, influences the distribution of tropical tree species, genera and families. We find that the distributions of tree taxa are indeed nested along precipitation gradients in the western Neotropics. Taxa tolerant to seasonal drought are disproportionally widespread across the precipitation gradient, with most reaching even the wettest climates sampled; however, most taxa analysed are restricted to wet areas. Our results suggest that the 'dry tolerance' hypothesis has broad applicability in the world's most species-rich forests. In addition, the large number of species restricted to wetter conditions strongly indicates that an increased frequency of drought could severely threaten biodiversity in this region. Overall, this study establishes a baseline for exploring how tropical forest tree composition may change in response to current and future environmental changes in this region.
Taxonomic and phylogenetic re-evaluation of Microdochium, Monographella and Idriella
Hernández-Restrepo, Margarita ; Groenewald, Johannes Z. ; Crous, P.W. - \ 2016
Persoonia 36 (2016)JUNE. - ISSN 0031-5850 - p. 57 - 82.
Cereals - Grasses - Phytopathogenic fungi - Sordariomycetes - Xylariales
Based on morphology and DNA sequence data the taxonomic relationships of Microdochium, Monographella and Idriella were reassessed. Microdochium is morphologically and phylogenetically circumscribed, and the sexual genus Monographella treated as synonym on the basis that Microdochium has more species, is more commonly encountered, and more frequently used in literature. An epitype is designated for Microdochium phragmites, and several well-known species are redefined based on their morphology and DNA sequence data (LSU, ITS, BTUB and RPB2). Furthermore, the revision of Microdochium led to six new combinations (M. albescens, M. consociatum, M. fusariisporum, M. maydis, M. opuntiae and M. stevensonii) and six new species (M. citrinidiscum, M. colombiense, M. fisheri, M. neoqueenslandicum, M. seminicola and M. trichocladiopsis) being proposed. Microdochium s.str. belongs to a monophyletic clade, together with Idriella lunata and Selenodriella, representing a new family, Microdochiaceae, in Xylariales. Other species previously accommodated in Microdochium belong to different orders in the Ascomycota. Microdochium gracile belongs to Sordariomycetes (incertae sedis) and Paramicrodochium is proposed to accommodate this species. Microdochium tripsaci belongs to Ephelis in Clavicipitaceae, while M. fusarioides belongs to a new genus, Microdochiella in Orbiliales. Idriella s.str. is a monotypic genus phylogenetically closely related to Microdochium. Idriella s.l. separates into different genera in Xylariales (incertae sedis) including Castanediella, Selenodriella, Idriellopsis, Neoidriella and Paraidriella, the last three proposed here as new genera.
Take-all or nothing
Hernández-Restrepo, M. ; Groenewald, J.Z. ; Elliott, M.L. ; Canning, G. ; McMillan, V.E. ; Crous, P.W. - \ 2016
Studies in Mycology 83 (2016). - ISSN 0166-0616 - p. 19 - 48.
Cryptic species - Gaeumannomyces graminis - Magnaporthaceae - Phylogeny - Triticum
Take-all disease of Poaceae is caused by Gaeumannomyces graminis (Magnaporthaceae). Four varieties are recognised in G. graminis based on ascospore size, hyphopodial morphology and host preference. The aim of the present study was to clarify boundaries among species and varieties in Gaeumannomyces by combining morphology and multi-locus phylogenetic analyses based on partial gene sequences of ITS, LSU, tef1 and rpb1. Two new genera, Falciphoriella and Gaeumannomycella were subsequently introduced in Magnaporthaceae. The resulting phylogeny revealed several cryptic species previously overlooked within Gaeumannomyces. Isolates of Gaeumannomyces were distributed in four main clades, from which 19 species could be delimited, 12 of which were new to science. Our results show that the former varieties Gaeumannomyces graminis var. avenae and Gaeumannomyces graminis var. tritici represent species phylogenetically distinct from G. graminis, for which the new combinations G. avenae and G. tritici are introduced. Based on molecular data, morphology and host preferences, Gaeumannomyces graminis var. maydis is proposed as a synonym of G. radicicola. Furthermore, an epitype for Gaeumannomyces graminis var. avenae was designated to help stabilise the application of that name.
Neocordana gen. nov.,the causal organism of Cordana leaf spot on banana
Hernández-Restrepo, Margarita ; Groenewald, Johannes Z. ; Crous, Pedro W. - \ 2015
Phytotaxa 205 (2015)4. - ISSN 1179-3155 - p. 229 - 238.
Cordanales - Magnaporthales - Musa - Plant pathogenic fungi - Pyriculariaceae - Systematics
Cordana leaf spot of banana is shown to be associated with several species of a new genus described here as Neocordana gen. nov. Furthermore, Neocordana belongs to Pyriculariaceae (Magnaporthales) rather than Cordanaceae where the type species of Cordana, C. pauciseptata resides. Neocordana is established to accommodate Cordana musae, C. johnstonii, C. versicolor, and a previously undescribed species, N. musicola, which is morphologically and phylogenetically distinct. Neocordana species are found to be associated with leaves of Musa spp. (Musaceae) and Canna denudata (Cannaceae). Based on these results, Cordanaceae is best recognized in a separate order, established here as Cordanales ord. nov.
Mechanisms of water supply and vegetation demand govern the seasonality and magnitude of evapotranspiration in Amazonia and Cerrado
Christoffersen, B.O. ; Restrepo-Coupe, N. ; Arain, M.A. ; Baker, I.T. ; Cestaro, B.P. ; Ciais, P. ; Fisher, J.B. ; Galbraith, D. ; Guan, X. ; Hurk, B. van den; Kruijt, B. - \ 2014
Agricultural and Forest Meteorology 191 (2014). - ISSN 0168-1923 - p. 33 - 50.
land-surface scheme - environment simulator jules - carbon-cycle feedbacks - stomatal conductance - regional evapotranspiration - atmosphere interactions - model description - biosphere model - boundary-layer - climate model
Evapotranspiration (E) in the Amazon connects forest function and regional climate via its role in precipitation recycling However, the mechanisms regulating water supply to vegetation and its demand for water remain poorly understood, especially during periods of seasonal water deficits In this study, we address two main questions: First, how do mechanisms of water supply (indicated by rooting depth and groundwater) and vegetation water demand (indicated by stomatal conductance and intrinsic water use efficiency) control evapotranspiration (E) along broad gradients of climate and vegetation from equatorial Amazonia to Cerrado, and second, how do these inferred mechanisms of supply and demand compare to those employed by a suite of ecosystem models? We used a network of eddy covariance towers in Brazil coupled with ancillary measurements to address these questions With respect to the magnitude and seasonality of E, models have much improved in equatorial tropical forests by eliminating most dry season water limitation, diverge in performance in transitional forests where seasonal water deficits are greater, and mostly capture the observed seasonal depressions in E at Cerrado However, many models depended universally on either deep roots or groundwater to mitigate dry season water deficits, the relative importance of which we found does not vary as a simple function of climate or vegetation In addition, canopy stomatal conductance (gs) regulates dry season vegetation demand for water at all except the wettest sites even as the seasonal cycle of E follows that of net radiation In contrast, some models simulated no seasonality in gs, even while matching the observed seasonal cycle of E. We suggest that canopy dynamics mediated by leaf phenology may play a significant role in such seasonality, a process poorly represented in models Model bias in gs and E, in turn, was related to biases arising from the simulated light response (gross primary productivity, GPP) or the intrinsic water use efficiency of photosynthesis (iWUE). We identified deficiencies in models which would not otherwise be apparent based on a simple comparison of simulated and observed rates of E. While some deficiencies can be remedied by parameter tuning, in most models they highlight the need for continued process development of belowground hydrology and in particular, the biological processes of root dynamics and leaf phenology, which via their controls on E, mediate vegetation-climate feedbacks in the tropics.
Fungal Planet description sheets: 214–280
Crous, P.W. ; Shivas, R.G. ; Quaedvlieg, W. ; Bank, M. van der; Zhang, Y. ; Summerell, B.A. ; Guarro, J. ; Wingfield, M.J. ; Wood, A.R. ; Alfenas, A.C. ; Braun, U. ; Cano-Lira, J.F. ; Garcia, D. ; Marin-Felix, Y. ; Alvarado, P. ; Andrade, J.P. ; Armengol, J. ; Assefa, A. ; Breeÿen, A. den; Camele, I. ; Cheewangkoon, R. ; Souza, J.T. De; Duong, T.A. ; Esteve-Raventós, F. ; Fournier, J. ; Frisullo, S. ; García-Jiménez, J. ; Gardiennet, A. ; Gené, J. ; Hernández-Restrepo, M. ; Hirooka, Y. ; Hospenthal, D.R. ; King, A. ; Lechat, C. ; Lombard, L. ; Mang, S.M. ; Marbach, P.A.S. ; Marincowitz, S. ; Montaño-Mata, N.J. ; Moreno, G. ; Perez, C.A. ; Pérez Sierra, A.M. ; Robertson, J.L. ; Roux, J. ; Rubio, E. ; Schumacher, R.K. ; Stchigel, A.M. ; Sutton, D.A. ; Tan, Y.P. ; Thompson, E.H. ; Vanderlinde, E. ; Walker, A.K. ; Walker, D.M. ; Wickes, B.L. ; Wong, P.T.W. ; Groenewald, J.Z. - \ 2014
Persoonia 32 (2014). - ISSN 0031-5850 - p. 184 - 306.
sp-nov - phylogeny reveals - eucalyptus-microfungi - host-associations - gene phylogeny - sequence data - diaporthales - morphology - gnomoniaceae - conioscypha
Novel species of microfungi described in the present study include the following from South Africa: Cercosporella dolichandrae from Dolichandra unguiscati, Seiridium podocarpi from Podocarpus latifolius, Pseudocercospora parapseudarthriae from Pseudarthria hookeri, Neodevriesia coryneliae from Corynelia uberata on leaves of Afrocarpus falcatus, Ramichloridium eucleae from Euclea undulata and Stachybotrys aloeticola from Aloe sp. (South Africa), as novel member of the Stachybotriaceae fam. nov. Several species were also described from Zambia, and these include Chaetomella zambiensis on unknown Fabaceae, Schizoparme pseudogranati from Terminalia stuhlmannii, Diaporthe isoberliniae from Isoberlinia angolensis, Peyronellaea combreti from Combretum mossambiciensis, Zasmidium rothmanniae and Phaeococcomyces rothmanniae from Rothmannia engleriana, Diaporthe vangueriae from Vangueria infausta and Diaporthe parapterocarpi from Pterocarpus brenanii. Novel species from the Netherlands include: Stagonospora trichophoricola, Keissleriella trichophoricola and Dinemasporium trichophoricola from Trichophorum cespitosum, Phaeosphaeria poae, Keissleriella poagena, Phaeosphaeria poagena, Parastagonospora poagena and Pyrenochaetopsis poae from Poa sp., Septoriella oudemansii from Phragmites australis and Dendryphion europaeum from Hedera helix (Germany) and Heracleum sphondylium (the Netherlands). Novel species from Australia include: Anungitea eucalyptorum from Eucalyptus leaf litter, Beltraniopsis neolitseae and Acrodontium neolitseae from Neolitsea australiensis, Beltraniella endiandrae from Endiandra introrsa, Phaeophleospora parsoniae from Parsonia straminea, Penicillifer martinii from Cynodon dactylon, Ochroconis macrozamiae from Macrozamia leaf litter, Triposporium cycadicola, Circinotrichum cycadis, Cladosporium cycadicola and Acrocalymma cycadis from Cycas spp. Furthermore, Vermiculariopsiella dichapetali is described from Dichapetalum rhodesicum (Botswana), Marasmius vladimirii from leaf litter (India), Ophiognomonia acadiensis from Picea rubens (Canada), Setophoma vernoniae from Vernonia polyanthes and Penicillium restingae from soil (Brazil), Pseudolachnella guaviyunis from Myrcianthes pungens (Uruguay) and Pseudocercospora neriicola from Nerium oleander (Italy). Novelties from Spain include: Dendryphiella eucalyptorum from Eucalyptus globulus, Conioscypha minutispora from dead wood, Diplogelasinospora moalensis and Pseudoneurospora canariensis from soil and Inocybe lanatopurpurea from reforested woodland of Pinus spp. Novelties from France include: Kellermania triseptata from Agave angustifolia, Zetiasplozna acaciae from Acacia melanoxylon, Pyrenochaeta pinicola from Pinus sp. and Pseudonectria rusci from Ruscus aculeatus. New species from China include: Dematiocladium celtidicola from Celtis bungeana, Beltrania pseudorhombica, Chaetopsina beijingensis and Toxicocladosporium pini from Pinus spp. and Setophaeosphaeria badalingensis from Hemerocallis fulva. Novel genera of Ascomycetes include Alfaria from Cyperus esculentus (Spain), Rinaldiella from a contaminated human lesion (Georgia), Hyalocladosporiella from Tectona grandis (Brazil), Pseudoacremonium from Saccharum spontaneum and Melnikomyces from leaf litter (Vietnam), Annellosympodiella from Juniperus procera (Ethiopia), Neoceratosperma from Eucalyptus leaves (Thailand), Ramopenidiella from Cycas calcicola (Australia), Cephalotrichiella from air in the Netherlands, Neocamarosporium from Mesembryanthemum sp. and Acervuloseptoria from Ziziphus mucronata (South Africa) and Setophaeosphaeria from Hemerocallis fulva (China). Several novel combinations are also introduced, namely for Phaeosphaeria setosa as Setophaeosphaeria setosa, Phoma heteroderae as Peyronellaea heteroderae and Phyllosticta maydis as Peyronellaea maydis. Morphological and culture characteristics along with ITS DNA barcodes are provided for all taxa.
What drives the seasonality of photosynthesis across the Amazon basin? A cross-site analysis of eddy flux tower measurements from the Brazil flux network
Restrepo-Coupe, N. ; Rocha, H.R. da; Hutyra, L.R. ; Araujo, A.C. de; Borma, L.S. ; Christoffersen, B. ; Cabral, O.M.R. ; Camargo, P.B. de; Cardoso, F.L. ; Lola da Costa, A.C. ; Fitzjarrald, D.R. ; Kruijt, B. - \ 2013
Agricultural and Forest Meteorology 182-183 (2013). - ISSN 0168-1923 - p. 128 - 144.
net ecosystem exchange - gross primary production - rain-forest - tropical forest - leaf-area - active radiation - carbon balance - co2 flux - climate - covariance
We investigated the seasonal patterns of Amazonian forest photosynthetic activity, and the effects thereon of variations in climate and land-use, by integrating data from a network of ground-based eddy flux towers in Brazil established as part of the ‘Large-Scale Biosphere Atmosphere Experiment in Amazonia’ project. We found that degree of water limitation, as indicated by the seasonality of the ratio of sensible to latent heat flux (Bowen ratio) predicts seasonal patterns of photosynthesis. In equatorial Amazonian forests (5° N–5° S), water limitation is absent, and photosynthetic fluxes (or gross ecosystem productivity, GEP) exhibit high or increasing levels of photosynthetic activity as the dry season progresses, likely a consequence of allocation to growth of new leaves. In contrast, forests along the southern flank of the Amazon, pastures converted from forest, and mixed forest-grass savanna, exhibit dry-season declines in GEP, consistent with increasing degrees of water limitation. Although previous work showed tropical ecosystem evapotranspiration (ET) is driven by incoming radiation, GEP observations reported here surprisingly show no or negative relationships with photosynthetically active radiation (PAR). Instead, GEP fluxes largely followed the phenology of canopy photosynthetic capacity (Pc), with only deviations from this primary pattern driven by variations in PAR. Estimates of leaf flush at three non-water limited equatorial forest sites peak in the dry season, in correlation with high dry season light levels. The higher photosynthetic capacity that follows persists into the wet season, driving high GEP that is out of phase with sunlight, explaining the negative observed relationship with sunlight. Overall, these patterns suggest that at sites where water is not limiting, light interacts with adaptive mechanisms to determine photosynthetic capacity indirectly through leaf flush and litterfall seasonality. These mechanisms are poorly represented in ecosystem models, and represent an important challenge to efforts to predict tropical forest responses to climatic variations.
Advancing data assimilation in operational hydrologic forecasting: progresses, challenges, and emerging opportunities
Liu, Y. ; Weerts, A. ; Clark, M. ; Franssen, H.J. ; Moradkhani, S. ; Seo, D.J. ; Schwanenberg, D. ; Smith, P. ; Dijk, A.I.J.M. van; Velzen, N. ; He, M. ; Lee, H. ; Noh, S.J. ; Rakovec, O. ; Restrepo, P. - \ 2012
Hydrology and Earth System Sciences 16 (2012). - ISSN 1027-5606 - p. 3863 - 3887.
ensemble kalman filter - variational data assimilation - numerical weather-prediction - soil-moisture retrievals - land data assimilation - stochastic hydrometeorological model - sequential data assimilation - improving runoff prediction - state-parameter estimat
Data assimilation (DA) holds considerable potential for improving hydrologic predictions as demonstrated in numerous research studies. However, advances in hydrologic DA research have not been adequately or timely implemented in operational forecast systems to improve the skill of forecasts for better informed real-world decision making. This is due in part to a lack of mechanisms to properly quantify the uncertainty in observations and forecast models in real-time forecasting situations and to conduct the merging of data and models in a way that is adequately efficient and transparent to operational forecasters. The need for effective DA of useful hydrologic data into the forecast process has become increasingly recognized in recent years. This motivated a hydrologic DA workshop in Delft, the Netherlands in November 2010, which focused on advancing DA in operational hydrologic forecasting and water resources management. As an outcome of the workshop, this paper reviews, in relevant detail, the current status of DA applications in both hydrologic research and operational practices, and discusses the existing or potential hurdles and challenges in transitioning hydrologic DA research into cost-effective operational forecasting tools, as well as the potential pathways and newly emerging opportunities for overcoming these challenges. Several related aspects are discussed, including (1) theoretical or mathematical aspects in DA algorithms, (2) the estimation of different types of uncertainty, (3) new observations and their objective use in hydrologic DA, (4) the use of DA for real-time control of water resources systems, and (5) the development of community-based, generic DA tools for hydrologic applications. It is recommended that cost-effective transition of hydrologic DA from research to operations should be helped by developing community-based, generic modeling and DA tools or frameworks, and through fostering collaborative efforts among hydrologic modellers, DA developers, and operational forecasters.
Genome sequence and analysis of the Irish potato famine pathogen Phytophthora infestans
Haas, B.J. ; Kamoun, S. ; Zody, M.C. ; Jiang, R.H.Y. ; Handsaker, R.E. ; Cano, L.M. ; Grabherr, M. ; Kodira, C.D. ; Raffaele, S. ; Torto-Alalibo, T. ; Bozkurt, T.O. ; Ah-Fong, A.M.V. ; Alvarado, L. ; Anderson, V.L. ; Armstrong, M.R. ; Avrova, A. ; Baxter, L. ; Beynon, J. ; Boevink, P.C. ; Bollmann, S.R. ; Bos, J.I.B. ; Bulone, V. ; Cai, G. ; Cakir, C. ; Carrington, J.C. ; Chawner, M. ; Conti, L. ; Costanzo, S. ; Ewan, R. ; Fahlgren, N. ; Fischbach, M.A. ; Fugelstad, J. ; Gilroy, E.M. ; Gnerre, S. ; Green, P.J. ; Grenville-Briggs, L.J. ; Griffith, J. ; Grunwald, N.J. ; Horn, K. ; Horner, N.R. ; Hu, C.H. ; Huitema, E. ; Jeong, D.H. ; Jones, A.M.E. ; Jones, J.D.G. ; Jones, R.W. ; Karlsson, E.K. ; Kunjeti, S.G. ; Lamour, K. ; Liu, Z. ; Ma, L. ; Maclean, D. ; Chibucos, M.C. ; McDonald, H. ; McWalters, J. ; Meijer, H.J.G. ; Morgan, W. ; Morris, P.F. ; Munro, C.A. ; O'Neill, K. ; Ospina-Giraldo, M. ; Pinzon, A. ; Pritchard, L. ; Ramsahoye, B. ; Ren, Q. ; Restrepo, S. ; Roy, S. ; Sadanandom, A. ; Savidor, A. ; Schornack, S. ; Schwartz, D.C. ; Schumann, U.D. ; Schwessinger, B. ; Seyer, L. ; Sharpe, T. ; Silvar, C. ; Song, J. ; Studholme, D.J. ; Sykes, S. ; Thines, M. ; Vondervoort, P.J.I. van de; Phuntumart, V. ; Wawra, S. ; Weide, R. ; Win, J. ; Young, C. ; Zhou, S. ; Fry, W. ; Meyers, B.C. ; West, P. van; Ristaino, J. ; Govers, F. ; Birch, P.R.J. ; Whisson, S.C. ; Judelson, H.S. ; Nusbaum, C. - \ 2009
Nature 461 (2009). - ISSN 0028-0836 - p. 393 - 398.
effector proteins - rxlr effectors - cell-death - plant - avirulence - avr3a - resistance - infection - genes
Phytophthora infestans is the most destructive pathogen of potato and a model organism for the oomycetes, a distinct lineage of fungus-like eukaryotes that are related to organisms such as brown algae and diatoms. As the agent of the Irish potato famine in the mid-nineteenth century, P. infestans has had a tremendous effect on human history, resulting in famine and population displacement(1). To this day, it affects world agriculture by causing the most destructive disease of potato, the fourth largest food crop and a critical alternative to the major cereal crops for feeding the world's population(1). Current annual worldwide potato crop losses due to late blight are conservatively estimated at $6.7 billion(2). Management of this devastating pathogen is challenged by its remarkable speed of adaptation to control strategies such as genetically resistant cultivars(3,4). Here we report the sequence of the P. infestans genome, which at similar to 240 megabases (Mb) is by far the largest and most complex genome sequenced so far in the chromalveolates. Its expansion results from a proliferation of repetitive DNA accounting for similar to 74% of the genome. Comparison with two other Phytophthora genomes showed rapid turnover and extensive expansion of specific families of secreted disease effector proteins, including many genes that are induced during infection or are predicted to have activities that alter host physiology. These fast-evolving effector genes are localized to highly dynamic and expanded regions of the P. infestans genome. This probably plays a crucial part in the rapid adaptability of the pathogen to host plants and underpins its evolutionary potential.
Landsliding and its multiscale influence on mountainscapes
Restrepo, C. ; Walker, L.R. ; Bussmann, R. ; Claessens, L. - \ 2009
Bioscience 59 (2009)8. - ISSN 0006-3568 - p. 685 - 698.
puerto-rican landslides - british-columbia - new-zealand - land-cover - vegetation - forest - soil - disturbance - succession - recovery
Landsliding is a complex process that modifies mountainscapes worldwide. Its severe and sometimes long-lasting negative effects contrast with the less-documented positive effects on ecosystems, raising numerous questions about the dual role of landsliding, the feedbacks between biotic and geomorphic processes, and, ultimately, the ecological and evolutionary responses of organisms. We present a conceptual model in which feedbacks between biotic and geomorphic processes, landslides, and ecosystem attributes are hypothesized to drive the dynamics of mountain ecosystems at multiple scales. This model is used to integrate and synthesize a rich, but fragmented, body of literature generated in different disciplines, and to highlight the need for profitable collaborations between biologists and geoscientists. Such efforts should help identify attributes that contribute to the resilience of mountain ecosystems, and also should help in conservation, restoration, and hazard assessment. Given the sensitivity of mountains to land-use and global climate change, these endeavors are both relevant and timely
|Distribution, diversity and environmental adaptation of highland papaya (Vasconcellea spp.) in tropical and subtropical America
Scheldeman, X. ; Willemen, L. ; Coppens D'eeckenbrugge, G. ; Romeijn-Peeters, E. ; Restrepo, M.T. ; Romero Motoche, J. ; Jimenez, D. ; Lobo, M. ; Medina, C.I. ; Reyes, C. ; Rodriguez, D. ; Ocampo, J.A. ; Damme, P. van; Goetghebeur, P. - \ 2007
In: Plant Conservation and Biodiversity / Hawksworth, D.L., Bull, A.T., Dordrecht : Springer (Series Topics in Biodiversity and Conservation 6) - ISBN 9781402064432 - p. 293 - 310.