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Fungal community assembly in drought-stressed sorghum shows stochasticity, selection, and universal ecological dynamics.

ABSTRACT: Community assembly of crop-associated fungi is thought to be strongly influenced by deterministic selection exerted by the plant host, rather than stochastic processes. Here we use a simple, sorghum system with abundant sampling to show that stochastic forces (drift or stochastic dispersal) act on fungal community assembly in leaves and roots early in host development and when sorghum is drought stressed, conditions when mycobiomes are small. Unexpectedly, we find no signal for stochasticity when drought stress is relieved, likely due to renewed selection by the host. In our experimental system, the host compartment exerts the strongest effects on mycobiome assembly, followed by the timing of plant development and lastly by plant genotype. Using a dissimilarity-overlap approach, we find a universality in the forces of community assembly of the mycobiomes of the different sorghum compartments and in functional guilds of fungi.

SUBMITTER: Gao C

PROVIDER: S-EPMC6946711 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature

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Fungal community assembly in drought-stressed sorghum shows stochasticity, selection, and universal ecological dynamics.

Gao Cheng C Montoya Liliam L Xu Ling L Madera Mary M Hollingsworth Joy J Purdom Elizabeth E Singan Vasanth V Vogel John J Hutmacher Robert B RB Dahlberg Jeffery A JA Coleman-Derr Devin D Lemaux Peggy G PG Taylor John W JW

Nature communications 20200107 1

Community assembly of crop-associated fungi is thought to be strongly influenced by deterministic selection exerted by the plant host, rather than stochastic processes. Here we use a simple, sorghum system with abundant sampling to show that stochastic forces (drift or stochastic dispersal) act on fungal community assembly in leaves and roots early in host development and when sorghum is drought stressed, conditions when mycobiomes are small. Unexpectedly, we find no signal for stochasticity whe ...[more]

PMID: 31911594

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Dataset Information

Fungal community assembly in drought-stressed sorghum shows stochasticity, selection, and universal ecological dynamics.

Publications

Fungal community assembly in drought-stressed sorghum shows stochasticity, selection, and universal ecological dynamics.

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