Emerging Patterns of Microbial Functional Traits

Yang, Yunfeng

doi:10.1016/j.tim.2021.04.004

Cited by 54 publications

(24 citation statements)

References 58 publications

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“…Further, we found that warming had different effects on the stochasticity of bacterial, fungal, and functional gene communities in different layers (Figure 3), which might be due to their difference in sensitivity to environmental changes. Microbial functional gene composition (i.e., functional β‐diversity) is decoupled from the taxonomy (Louca et al, 2016; Yang, 2021), which explains that warming decreased the stochasticity of bacterial or fungal communities in the surface or deep organic layer, but did not change the stochasticity of functional genes.…”

Section: Discussionmentioning

confidence: 99%

Permafrost thaw with warming reduces microbial metabolic capacities in subsurface soils

Yang

Feng

et al. 2021

Molecular Ecology

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Microorganisms are major constituents of the total biomass in permafrost regions, whose underlain soils are frozen for at least two consecutive years. To understand potential microbial responses to climate change, here we examined microbial community compositions and functional capacities across four soil depths in an Alaska tundra site. We showed that a 5-year warming treatment increased soil thaw depth by 25.7% (p = .011) within the deep organic layer (15-25 cm). Concurrently, warming reduced 37% of bacterial abundance and 64% of fungal abundances in the deep organic layer, while it did not affect microbial abundance in other soil layers (i.e., 0-5, 5-15, and 45-55 cm). Warming treatment altered fungal community composition and microbial functional structure (p < .050), but not bacterial community composition. Using a functional gene array, we found that the relative abundances of a variety of carbon (C)-decomposing, iron-reducing, and sulphate-reducing genes in the deep organic layer were decreased, which was not observed by the shotgun sequencing-based metagenomics analysis of those samples. To explain the reduced metabolic capacities, we found that warming treatment elicited higher deterministic environmental filtering, which could be linked to water-saturated time, soil moisture, and soil thaw duration. In contrast, plant factors showed little influence on microbial communities in subsurface soils below 15 cm, despite a 25.2% higher (p < .05) aboveground plant biomass by warming treatment. Collectively, we demonstrate that microbial metabolic capacities in subsurface soils are reduced, probably arising from enhanced thaw by warming.

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Section: Discussionmentioning

confidence: 99%

Permafrost thaw with warming reduces microbial metabolic capacities in subsurface soils

Yang

Feng

et al. 2021

Molecular Ecology

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“…Functional traits are the key properties related to physiology, morphology or genomic information of an individual organism, reinforcing a mechanistic understanding of linking microbial diversity to ecosystem processes and further their responses to changing environments (Krause et al ., 2014; Zhou et al ., 2015; Escalas et al ., 2019; Yang, 2021). It is reasonable to consider the species‐level perspective for complex microbial communities largely because each species has a unique physiology and consequently functional roles.…”

Section: Key Questions and Perspectivesmentioning

confidence: 99%

Embracing mountain microbiome and ecosystem functions under global change

Wang

Meng

et al. 2022

New Phytologist

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Mountains are pivotal to maintaining habitat heterogeneity, global biodiversity, ecosystem functions and services to humans. They have provided classic model natural systems for plant and animal diversity gradient studies for over 250 years. In the recent decade, the exploration of microorganisms on mountainsides has also achieved substantial progress. Here, we review the literature on microbial diversity across taxonomic groups and ecosystem types on global mountains. Microbial community shows climatic zonation with orderly successions along elevational gradients, which are largely consistent with traditional climatic hypotheses. However, elevational patterns are complicated for species richness without general rules in terrestrial and aquatic environments and are driven mainly by deterministic processes caused by abiotic and biotic factors. We see a major shift from documenting patterns of biodiversity towards identifying the mechanisms that shape microbial biogeographical patterns and how these patterns vary under global change by the inclusion of novel ecological theories, frameworks and approaches. We thus propose key questions and cutting-edge perspectives to advance future research in mountain microbial biogeography by focusing on biodiversity hypotheses, incorporating meta-ecosystem framework and novel key drivers, adapting recently developed approaches in trait-based ecology and manipulative field experiments, disentangling biodiversity-ecosystem functioning relationships and finally modelling and predicting their global change responses.

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“…However, how the rhizofungal diversity and community shift under plant stress caused by insect herbivory remains understudied. Currently, a key unresolved issue in microbial ecology is our understanding of microbial community assembly processes (Zhou et al, 2008;Stegen et al, 2012;Yang, 2021). To the best of our knowledge, microbial assembly can entail the following five processes: dispersal limitation, drift, homogenous selection, heterogeneous selection, and homogenous dispersal; all these scenarios were carefully described by Shi et al (2019a).…”

Section: Introductionmentioning

confidence: 99%

Foliar Herbivory Reduces Rhizosphere Fungal Diversity and Destabilizes the Co-occurrence Network

Shi

Zhang

et al. 2022

Front. Microbiol.

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Insect herbivores can adversely impact terrestrial plants throughout ontogeny and across various ecosystems. Simultaneously, the effects of foliar herbivory may extend belowground, to the soil microbial community. However, the responses in terms of the diversity, assembly, and stability of rhizosphere fungi to aboveground herbivory remain understudied. Here, using high-throughput sequencing, the effects of foliar insect herbivory on rhizosphere fungal microbes were investigated in a common garden experiment that manipulated herbivory intensity and time from herbivore removal. The number of observed fungal species was reduced by a greater herbivory intensity, with some species evidently sensitive to herbivory intensity and time since herbivore removal. Rhizofungal assembly processes were altered by both herbivory intensity and time since herbivore removal. Further, we found evidence that both factors strongly influenced fungal community stability: a high intensity of herbivory coupled with a shorter time since herbivore removal resulted in low stability. These results suggest that foliar herbivory can adversely alter fungal diversity and stability, which would in turn be harmful for plant health. Fortunately, the effect seems to gradually diminish with time elapsed after herbivore removal. Our findings provide a fresh, in-depth view into the roles of rhizofungi in enhancing the adaption ability of plants under environmental stress.

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Emerging Patterns of Microbial Functional Traits

Cited by 54 publications

References 58 publications

Permafrost thaw with warming reduces microbial metabolic capacities in subsurface soils

Permafrost thaw with warming reduces microbial metabolic capacities in subsurface soils

Embracing mountain microbiome and ecosystem functions under global change

Foliar Herbivory Reduces Rhizosphere Fungal Diversity and Destabilizes the Co-occurrence Network

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