Deciphering the role of specialist and generalist plant–microbial interactions as drivers of plant–soil feedback

New Phytologist - Tập 234 Số 6 - Trang 1929-1944 - 2022
Marina Semchenko1,2, Kathryn E. Barry3, Franciska T. de Vries4, Liesje Mommer5, Mari Moora2, Jose G. Maciá‐Vicente5
1Department of Earth and Environmental Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK
2Institute of Ecology and Earth Sciences, University of Tartu, Liivi 2, 50409 Tartu, Estonia
3Ecology and Biodiversity, Department of Biology, Institute of Science, Utrecht University, Padualaan 8, Utrecht, the Netherlands
4Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, PO Box 94240, 1090 GE Amsterdam, The Netherlands
5Plant Ecology and Nature Conservation, Wageningen University & Research, PO Box 47, 6700 AA Wageningen, the Netherlands

Tóm tắt

SummaryFeedback between plants and soil microbial communities can be a powerful driver of vegetation dynamics. Plants elicit changes in the soil microbiome that either promote or suppress conspecifics at the same location, thereby regulating population density‐dependence and species co‐existence. Such effects are often attributed to the accumulation of host‐specific antagonistic or beneficial microbiota in the rhizosphere. However, the identity and host‐specificity of the microbial taxa involved are rarely empirically assessed. Here we review the evidence for host‐specificity in plant‐associated microbes and propose that specific plant–soil feedbacks can also be driven by generalists. We outline the potential mechanisms by which generalist microbial pathogens, mutualists and decomposers can generate differential effects on plant hosts and synthesize existing evidence to predict these effects as a function of plant investments into defence, microbial mutualists and dispersal. Importantly, the capacity of generalist microbiota to drive plant–soil feedbacks depends not only on the traits of individual plants but also on the phylogenetic and functional diversity of plant communities. Identifying factors that promote specialization or generalism in plant–microbial interactions and thereby modulate the impact of microbiota on plant performance will advance our understanding of the mechanisms underlying plant–soil feedback and the ways it contributes to plant co‐existence.

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New Phytologist

Tập 234 Số 6

1929-1944

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