- David A. Wardle (1)
- Gerlinde B. Deyn De (1)
- Gerlinde B. Deyn de (1)
- Yongfei Bai (1)
- John Connolly (1)
- Ashley D. Keiser (1)
- Kathryn E. Barry (1)
- Gu Feng (1)
- Wim H. Putten van der (1)
- Ellis Hoffland (1)
- Forest Isbell (1)
- Alexandra J. Wright (1)
- Hans Kroon de (1)
- Janna M. Barel (1)
- Alexandru Milcu (1)
- Liesje Mommer (2)
- Christiane Roscher (1)
- Jasper Ruijven van (1)
- Sirgi Saar (1)
- Michael Scherer-Lorenzen (1)
- Bernhard Schmid (1)
- Marina Semchenko (1)
- G.F.C. Veen (1)
- Thomas W. Kuyper (1)
- Alexandra Weigelt (1)
- Christian Wirth (1)
- Xin Xin Wang (1)
Maize varieties can strengthen positive plant-soil feedback through beneficial arbuscular mycorrhizal fungal mutualists
Wang, Xin Xin ; Hoffland, Ellis ; Mommer, Liesje ; Feng, Gu ; Kuyper, Thomas W. - \ 2019
Mycorrhiza 29 (2019)3. - ISSN 0940-6360 - p. 251 - 261.
AMF species - Maize varieties - Plant-soil feedback - Soil conditioning
Plant-soil feedback (PSF) describes the process whereby plant species modify the soil environment, which subsequently impacts the growth of the same or another plant species. Our aim was to explore PSF by two maize varieties (a landrace and a hybrid variety) and three arbuscular mycorrhizal fungi (AMF) species (Funneliformis mosseae, Claroideoglomus etunicatum, Gigaspora margarita, and the mixture). We carried out a pot experiment with a conditioning and a feedback phase to determine PSF with different species of AMF and with a non-mycorrhizal control. Sterilized soil was conditioned separately by each variety, with or without AMF; in the feedback phase, each soil community was used to grow each in its “home” soil and in the “away” soil. Plant performance was assessed as shoot biomass, phosphorus (P) concentration and P content, and fungal performance was assessed as mycorrhizal colonization and hyphal length density. Both maize varieties were differentially influenced by AMF in the conditioning phase. In the feedback phase, PSF was generally negative for non-mycorrhizal plants or when plants were colonized by G. margarita, whereas PSF was positive in the other three AMF treatments. When plants were grown on home soil, hyphal length density was larger than on away soil. We conclude that different maize varieties can strengthen positive plant-soil feedback for themselves through beneficial mutualists for themselves, but not across the maize varieties.
The Future of Complementarity : Disentangling Causes from Consequences
Barry, Kathryn E. ; Mommer, Liesje ; Ruijven, Jasper van; Wirth, Christian ; Wright, Alexandra J. ; Bai, Yongfei ; Connolly, John ; Deyn, Gerlinde B. De; Kroon, Hans de; Isbell, Forest ; Milcu, Alexandru ; Roscher, Christiane ; Scherer-Lorenzen, Michael ; Schmid, Bernhard ; Weigelt, Alexandra - \ 2019
Trends in Ecology and Evolution 34 (2019)2. - ISSN 0169-5347 - p. 167 - 180.
Abiotic facilitation - Biodiversity - Biotic feedbacks - Complementarity - Complementarity effect - Ecosystem functioning - Plant-soil feedback - Resource partitioning - Resource tracers - Stress amelioration
Evidence suggests that biodiversity supports ecosystem functioning. Yet, the mechanisms driving this relationship remain unclear. Complementarity is one common explanation for these positive biodiversity–ecosystem functioning relationships. Yet, complementarity is often indirectly quantified as overperformance in mixture relative to monoculture (e.g., ‘complementarity effect’). This overperformance is then attributed to the intuitive idea of complementarity or, more specifically, to species resource partitioning. Locally, however, several unassociated causes may drive this overperformance. Here, we differentiate complementarity into three types of species differences that may cause enhanced ecosystem functioning in more diverse ecosystems: (i) resource partitioning, (ii) abiotic facilitation, and (iii) biotic feedbacks. We argue that disentangling these three causes is crucial for predicting the response of ecosystems to future biodiversity loss.
Spatial heterogeneity in root litter and soil legacies differentially affect legume root traits
Saar, Sirgi ; Semchenko, Marina ; Barel, Janna M. ; Deyn, Gerlinde B. de - \ 2018
Plant and Soil 428 (2018)1-2. - ISSN 0032-079X - p. 253 - 264.
Functional traits - Local and systemic response - Plant-soil feedback - Root litter - Soil heterogeneity - Spatial root distribution
Background and Aims: Plants affect the soil environment via litter inputs and changes in biotic communities, which feed back to subsequent plant growth. Here we investigated the individual contributions of litter and biotic communities to soil feedback effects, and plant ability to respond to spatial heterogeneity in soil legacy. Methods: We tested for localised and systemic responses of Trifolium repens to soil biotic and root litter legacy of seven grassland species by exposing half of a root system to control soil and the other half to specific inoculum or root litter. Results: Soil inoculation triggered a localised reduction in root length while litter locally increased root biomass independent of inoculum or litter species identity. Nodule formation was locally suppressed in response to soil conditioned by another legume (Vicia cracca) and showed a trend towards systemic reduction in response to conspecific soil. V. cracca litter also caused a systemic response with thinner roots produced in the part of the root system not directly exposed to the litter. Conclusions: Spatial heterogeneity in root litter distribution and soil communities generate distinct local and systemic responses in root morphology and nodulation. These responses can influence plant-mutualist interactions and nutrient cycling, and should be included in plant co-existence models.
Variation in home-field advantage and ability in leaf litter decomposition across successional gradients
Veen, G.F.C. ; Keiser, Ashley D. ; Putten, Wim H. van der; Wardle, David A. - \ 2018
Functional Ecology 32 (2018)6. - ISSN 0269-8463 - p. 1563 - 1574.
Decomposition - Functional breadth - Plant litter feedback - Plant-soil feedback - Soil - Succession
It is increasingly recognized that interactions between plants and soil (a)biotic conditions can influence local decomposition processes. For example, decomposer communities may become specialized in breaking down litter of plant species that they are associated with, resulting in accelerated decomposition, known as "home-field advantage" (HFA). Also, soils can vary inherently in their capacity to degrade organic compounds, known as "ability." However, we have a poor understanding how environmental conditions drive the occurrence of HFA and ability. Here, we studied how HFA and ability change across three types of successional gradients: coastal sand dunes (primary succession), inland drift sands (primary succession) and ex-arable fields (secondary succession). Across these gradients, litter quality (i.e. nutrient, carbon and lignin contents) increases with successional time for coastal dunes and decreases for the other two gradients. We performed a 12-months reciprocal litter transplant experiment under greenhouse conditions using soils and litters collected from early-, mid- and late-successional stages of each gradient. We found that HFA and ability did not consistently shift with successional stage for all gradients, but were instead specific for each type of successional gradient. In coastal dunes, HFA was positive for early-successional litter, in drift, sands it was negative for mid-successional litter, and for ex-arable fields, HFA increased with successional time. Ability of decomposer communities was highest in mid-successional stages for coastal dunes and drift sands, but for ex-arable fields, ability decreased throughout with successional time. High HFA was related to high litter C content and soil and organic matter content in soils and to low litter and soil nutrient concentrations. Ability did not consistently occur in successional stages with high or low litter quality. Synthesis. Our findings show that specific environmental conditions, such as changes in litter or soil quality, along environmental gradients can shape the influence of HFA and ability on decomposition. In sites with strong HFA or ability, interactions between plants, litter and decomposer communities will be important drivers of nutrient cycling and hence have the potential to feedback to plant growth. A plain language summary is available for this article.