Anthoceros genomes illuminate the origin of land plants and the unique biology of hornworts
Li, Fay Wei ; Nishiyama, Tomoaki ; Waller, Manuel ; Frangedakis, Eftychios ; Keller, Jean ; Li, Zheng ; Fernandez-Pozo, Noe ; Barker, Michael S. ; Bennett, Tom ; Blázquez, Miguel A. ; Cheng, Shifeng ; Cuming, Andrew C. ; Vries, Jan de; Vries, Sophie de; Delaux, Pierre Marc ; Diop, Issa S. ; Harrison, Jill C. ; Hauser, Duncan ; Hernández-García, Jorge ; Kirbis, Alexander ; Meeks, John C. ; Monte, Isabel ; Mutte, Sumanth K. ; Neubauer, Anna ; Quandt, Dietmar ; Robison, Tanner ; Shimamura, Masaki ; Rensing, Stefan A. ; Villarreal, Juan Carlos ; Weijers, Dolf ; Wicke, Susann ; Wong, Gane K.S. ; Sakakibara, Keiko ; Szövényi, Péter - \ 2020
Nature Plants 6 (2020)3. - ISSN 2055-026X - p. 259 - 272.
Hornworts comprise a bryophyte lineage that diverged from other extant land plants >400 million years ago and bears unique biological features, including a distinct sporophyte architecture, cyanobacterial symbiosis and a pyrenoid-based carbon-concentrating mechanism (CCM). Here, we provide three high-quality genomes of Anthoceros hornworts. Phylogenomic analyses place hornworts as a sister clade to liverworts plus mosses with high support. The Anthoceros genomes lack repeat-dense centromeres as well as whole-genome duplication, and contain a limited transcription factor repertoire. Several genes involved in angiosperm meristem and stomatal function are conserved in Anthoceros and upregulated during sporophyte development, suggesting possible homologies at the genetic level. We identified candidate genes involved in cyanobacterial symbiosis and found that LCIB, a Chlamydomonas CCM gene, is present in hornworts but absent in other plant lineages, implying a possible conserved role in CCM function. We anticipate that these hornwort genomes will serve as essential references for future hornwort research and comparative studies across land plants.
Koop geen sojabonen meer uit ontbost gebied, en nog vijf tips
Wicke, Birka ; Visseren-Hamakers, Ingrid ; Wassen, Martin ; Verweij, Pita ; Dekker, Stefan ; Hilst, Floortje van der; Turnhout, Esther ; Behagel, Jelle - \ 2019
Duurzaamheid Nederland moet het voortouw nemen bij het uitbreiden van de Europese wetgeving tegen wereldwijde ontbossing, schrijven acht wetenschappers.
|Managing LUC‐induced GHG emissions and price impacts from bioenergy under different scenarios
Levin-Koopman, Jason ; Meijl, J.C.M. van; Smeets, E.M.W. ; Tabeau, A.A. ; Faaij, A. ; Stehfest, Elke ; Vuuren, Detlef P. van; Daioglou, Vassilis ; Gerssen-Gondelach, S. ; Wicke, Birka - \ 2017
Sustainability constraints in determining European bioenergy potential : A review of existing studies and steps forward
Kluts, Ingeborg ; Wicke, Birka ; Leemans, Rik ; Faaij, André - \ 2017
Renewable and Sustainable Energy Reviews 69 (2017). - ISSN 1364-0321 - p. 719 - 734.
Bioenergy - Biomass - Europe - Land use - Potential - Review
This paper reviews European land and bioenergy potential studies to 1) identify shortcomings related to how they account for agricultural intensification and its associated environmental effects, and sustainability constraints, and 2) provide suggestions on how these shortcomings can be improved in future assessments. The key shortcomings are: The environmental impacts of intensification are nearly always ignored in the reviewed studies, while these impacts should be accounted for if intensification is required to make land available for energy cropping. Future productivity developments of crops and livestock, and the associated land-use and environmental effects are currently limited to conventional intensification measures whereby the proportion between inputs and outputs is fixed. Sustainable intensification measures, which increase land productivity with similar or lower inputs, are ignored in the reviewed studies. Livestock productivity developments, livestock specific intensification measures and their environmental effects are poorly or not at all covered in the reviewed studies. Most studies neglect sustainability constraints other than GHG emissions in the selection of energy crops. This includes limitations to rainfed energy crop cultivation, a minimum number of crop species, the structural diversity within cropping areas and the integration of energy crops in existing or new crop rotations, while simultaneously considering the effects on subsequent crops. These shortcomings suggest that the identification of sustainable pathways for European bioenergy production requires a more integrative approach combining land demand for food, feed and energy crop production, including different intensification pathways, and the consequent direct and indirect environmental impacts. A better inclusion of management practices into such approach will improve the assessment of intensification, its environmental consequences and the sustainable bioenergy potential from agricultural feedstocks.
Model collaboration for the improved assessment of biomass supply, demand, and impacts
Wicke, B. ; Hilst, F. van der; Daioglou, V. ; Banse, M. ; Beringer, T. ; Gerssen-Gondelach, S. ; Heijnen, S. ; Karssenberg, D. ; Laborde, D. ; Lippe, M. ; Meijl, H. van; Nassar, A. ; Powell, J.P. ; Prins, A.G. ; Rose, S.N.K. ; Smeets, E.M.W. ; Stehfest, E. ; Tyner, W.E. ; Verstegen, J.A. ; Valin, H. ; Vuuren, D.P. van; Yeh, S. ; Faaij, A.P.C. - \ 2015
Global change biology Bioenergy 7 (2015)3. - ISSN 1757-1693 - p. 422 - 437.
land-use change - global agricultural markets - greenhouse-gas emissions - eu biofuel policies - bioenergy production - united-states - energy crops - trade-offs - bio-energy - ethanol
Existing assessments of biomass supply and demand and their impacts face various types of limitations and uncertainties, partly due to the type of tools and methods applied (e.g., partial representation of sectors, lack of geographical details, and aggregated representation of technologies involved). Improved collaboration between existing modeling approaches may provide new, more comprehensive insights, especially into issues that involve multiple economic sectors, different temporal and spatial scales, or various impact categories. Model collaboration consists of aligning and harmonizing input data and scenarios, model comparison and/or model linkage. Improved collaboration between existing modeling approaches can help assess (i) the causes of differences and similarities in model output, which is important for interpreting the results for policy-making and (ii) the linkages, feedbacks, and trade-offs between different systems and impacts (e.g., economic and natural), which is key to a more comprehensive understanding of the impacts of biomass supply and demand. But, full consistency or integration in assumptions, structure, solution algorithms, dynamics and feedbacks can be difficult to achieve. And, if it is done, it frequently implies a trade-off in terms of resolution (spatial, temporal, and structural) and/or computation. Three key research areas are selected to illustrate how model collaboration can provide additional ways for tackling some of the shortcomings and uncertainties in the assessment of biomass supply and demand and their impacts. These research areas are livestock production, agricultural residues, and greenhouse gas emissions from land-use change. Describing how model collaboration might look like in these examples, we show how improved model collaboration can strengthen our ability to project biomass supply, demand, and impacts. This in turn can aid in improving the information for policy-makers and in taking better-informed decisions.
Indirect land use change: review of existing models and strategies for mitigation
Wicke, B. ; Verweij, P. ; Meijl, H. van; Vuuren, D.P. van; Faaij, A.P.C. - \ 2012
Biofuels 3 (2012)1. - ISSN 1759-7269 - p. 87 - 100.
This study reviews the current status, uncertainties and shortcomings of existing models of land use change (LUC) and associated GHG emissions as a result of biofuel production. The study also identifies options for improving the models and conducting further analysis. Moreover, because the extent of indirect LUC related to biofuels largely depends on other land uses, particularly agriculture, this study explores strategies for mitigating overall LUC and its effects. Despite recent improvements and refinements of the models, this review finds large uncertainties, primarily related to the underlying data and assumptions of the market-equilibrium models. Thus, there is still considerable scope for further scientific improvements of the modeling efforts. In addition, analyzing how overall LUC and its effects can be minimized is an important topic for further research and can deliver more concrete input for developing proper policy strategies. Future studies should investigate the impact of sustainability criteria and the effects of strategies for mitigating LUC, such as increasing agricultural efficiency, optimizing bioenergy production chains, using currently unused residues and byproducts, and producing feedstocks on degraded and marginal land.
Macroeconomic impacts of bioenergy production on surplus agricultural land—A case study of Argentina
Wicke, Birka ; Smeets, E. ; Tabeau, Andrzej ; Hilbert, Jorge ; Faaij, André - \ 2009
Renewable and Sustainable Energy Reviews 13 (2009)9. - ISSN 1364-0321 - p. 2463 - 2473.
This paper assesses the macroeconomic impacts in terms of GDP, trade balance and employment of large-scale bioenergy production on surplus agricultural land. An input–output model is developed with which the direct, indirect and induced macroeconomic impacts of bioenergy production and agricultural intensification, which is needed to make agricultural land become available for bioenergy production, are assessed following a scenario approach. The methodology is applied to a case study of Argentina. The results of this study reveal that large-scale pellet production in 2015 would directly increase GDP by 4%, imports by 10% and employment by 6% over the reference situation in 2001. When accounting for indirect and induced impacts, GDP increases by 18%, imports by 20% and employment by 26% compared to 2001. Agricultural intensification reduces but does not negate these positive impacts of bioenergy production. Accounting for agricultural intensification, the increase in GDP as a result of bioenergy production on surplus agricultural land would amount to 16%, 20% in imports and 16% in employment compared to 2001.