Ecological corridors homogenize plant root endospheric mycobiota

The New Phytologist · 5 authors, 4 centres

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An experimental mesocosm study over 2 years showed that small-scale ecological corridors connecting plant patches homogenized root-associated fungal communities, increasing richness and deterministic assembly in connected plants compared to isolated ones.

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This study used an experimental corridor-mesocosm design and high-throughput amplicon sequencing to investigate how ecological corridors affect endospheric fungal assemblages in plant roots. The experiment was conducted at a 1 m spatial scale over 2 years with five sampling time points. The central finding was that connected plants had endospheric mycobiota with higher species richness, lower beta-diversity, and more deterministic assembly than the mycobiota of isolated plants. These corridor effects became more pronounced as host plants developed.

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other

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preclinical research

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ORIGINAL PAPER

PMC10107361

Ecological corridors homogenize plant root endospheric mycobiota

The New Phytologist

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ABSTRACT

Summary Ecological corridors promote species coexistence in fragmented habitats where dispersal limits species fluxes. The corridor concept was developed and investigated with macroorganisms in mind, while microorganisms, the invisible majority of biodiversity, were disregarded. We analyzed the effect of corridors on the dynamics of endospheric fungal assemblages associated with plant roots at the scale of 1 m over 2 years (i.e. at five time points) by combining an experimental corridor‐mesocosm with high‐throughput amplicon sequencing. We showed that plant root endospheric mycobiota were sensitive to corridor effects when the corridors were set up at a small spatial scale. The endospheric mycobiota of connected plants had higher species richness, lower beta‐diversity, and more deterministic assembly than the mycobiota of isolated plants. These effects became more pronounced with the development of host plants. Biotic corridors composed of host plants may thus play a key role in the spatial dynamics of microbial communities and may influence microbial diversity and related ecological functions.

CITATION EXPORT

Jie Hu, Philippe Vandenkoornhuyse, Fadwa Khalfallah et al.. Ecological corridors homogenize plant root endospheric mycobiota. The New Phytologist. (2022). https://doi.org/10.1111/nph.18606

AUTHORS

5 · 4 CENTRES

Jie Hu, Philippe Vandenkoornhuyse, Fadwa Khalfallah, Romain Causse‐Védrines, Cendrine Mony

1 UMR 6553 Ecobio CNRS‐University of Rennes Avenue du Général Leclerc 35042 Rennes Cedex France
2 Ecology and Biodiversity group, Institute of Environmental Biology University of Utrecht H.R. Kruyt building, Padualaan 8 3584 CH Utrecht the Netherlands
3 UMR IAM, INRAE Université de Lorraine Rue d'amance 54280 Champenoux France
4 Present address: Department of Microbial Ecology Netherlands Institute of Ecology Droevendaalsesteeg 10 6708 PB Wageningen the Netherlands