Geometry and evolution of the ecological niche in plant-associated microbes.

Nature Communications
Thomas M ChalonerDaniel Patrick Bebber

Abstract

The ecological niche can be thought of as a volume in multidimensional space, where each dimension describes an abiotic condition or biotic resource required by a species. The shape, size, and evolution of this volume strongly determine interactions among species and influence their current and potential geographical distributions, but the geometry of niches is poorly understood. Here, we analyse temperature response functions and host plant ranges for hundreds of potentially destructive plant-associated fungi and oomycetes. We demonstrate that niche specialization is uncorrelated on abiotic (i.e. temperature response) and biotic (i.e. host range) axes, that host interactions restrict fundamental niche breadth to form the realized niche, and that both abiotic and biotic niches show limited phylogenetic constraint. The ecological terms 'generalist' and 'specialist' therefore do not apply to these microbes, as specialization evolves independently on different niche axes. This adaptability makes plant pathogens a formidable threat to agriculture and forestry.

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Citations

Dec 29, 2020·FEMS Microbiology Ecology·Itumeleng MoroenyaneÉtienne Yergeau
Feb 2, 2021·Molecular Plant-microbe Interactions : MPMI·Soledad SacristánSebastian Eves-van den Akker
Aug 26, 2021·Nature Communications·Joan DudneyJohn J Battles
Oct 10, 2021·Molecular Plant-microbe Interactions : MPMI
Dec 14, 2021·Frontiers in Cellular and Infection Microbiology·Norman van RhijnAndrew M Jones

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Methods Mentioned

BETA
spore germination

Software Mentioned

PhyloMaker
R package ‘ paco ’
R package ‘ phytools ’
Plantwise
R package ‘ ecodist ’
R package ‘ picante ’
Mycobank

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