2020
DOI: 10.1038/s41467-019-13913-9
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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 stres… Show more

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Cited by 245 publications
(264 citation statements)
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References 87 publications
(164 reference statements)
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“…5). Other studies show similar results, e.g., that fungi community assembly in drought-stressed sorghum is governed by stochastic processes [26]. It has been suggested that the complex carbon substrates released by roots provide a resource-rich environment that reduces competitive pressures, which increases compositional stochasticity [29,58].…”
Section: Stochastic Processes Control Community Dynamics Under Droughmentioning
confidence: 55%
See 1 more Smart Citation
“…5). Other studies show similar results, e.g., that fungi community assembly in drought-stressed sorghum is governed by stochastic processes [26]. It has been suggested that the complex carbon substrates released by roots provide a resource-rich environment that reduces competitive pressures, which increases compositional stochasticity [29,58].…”
Section: Stochastic Processes Control Community Dynamics Under Droughmentioning
confidence: 55%
“…Although the mechanisms shaping microbial community structure have been intensively examined, those controlling the ecological processes of crop systems in response to environmental perturbations remain unclear. To understand the mechanisms and factors giving structure to natural and agricultural microbial communities, studies have emphasized two types of processes: stochastic and deterministic [26]. Both stochastic and deterministic components are embedded in four ecological processes, including selection, dispersal, diversi cation, and drift [27].…”
Section: Introductionmentioning
confidence: 99%
“…Based on the eld experiment, Feng et al (2018) suggested that long-term fertilization signi cantly in uenced the community assembly processes of soil diazotrophs. Gao et al (2020) also indicated that fungal community assembly in drought-stressed sorghum shows stochasticity, selection and universal ecological dynamics. However, the microbial community assembly process in soil aggregate in agricultural ecosystem seems to be neglected.…”
Section: Discussionmentioning
confidence: 96%
“…Both diversi cation and dispersal have stochastic and deterministic components (Zhou and Ning, 2017). Deterministic processes impact the tness of microbial communities, thereby in uence the abundance and composition of microbial communities, and stochastic processes lead to unpredictable changes in community compositions (Gao et al, 2020).…”
Section: Introductionmentioning
confidence: 99%
“…Due to the absence of pepper powder, the fungal communities in the WX samples were more random than that in the XL samples. Previous studies have indicated that both deterministic and stochastic processes play an important role in microbial community assembly in natural environments (Chen et al, 2019;Hou et al, 2019;Gao et al, 2020). Future studies should use the ecological null models to decipher the relative importance of deterministic and stochastic processes in the microbial communities of Doushen.…”
Section: Discussionmentioning
confidence: 99%