Central Taxa Are Keystone Microbes During Early Succession

Ecology Letters, Journal Year: 2024, Volume and Issue: 28(1)

Published: Dec. 31, 2024

Microorganisms underpin numerous ecosystem processes and support biodiversity globally. Yet, we understand surprisingly little about what structures environmental microbiomes, including how to efficiently identify key players. Microbiome network theory predicts that highly connected hubs act as keystones, but this has never been empirically tested in nature. Combining culturing, sequencing, networks field experiments, isolated 'central' (highly connected, hub taxa), 'intermediate' (moderately connected), 'peripheral' (weakly/unconnected) microbes experimentally evaluated their effects on soil microbiome assembly during early succession Central colonisers significantly (1) enhanced (35%-40% richer communities), (2) reshaped trajectories of (3) increased recruitment additional influential by > 60%. In contrast, peripheral did not increase diversity were transient taxa, minimally affected the presence other microbes. This work elucidates fundamental principles microbial ecology demonstrates for first time nature central keystone taxa.

Language: Английский

---

Comparison of the response of microbial communities to region and rootstock disease differences in tobacco soils of southwestern China

Frontiers in Microbiology, Journal Year: 2023, Volume and Issue: 14

Published: Dec. 20, 2023

Introduction Soil microorganisms are essential for crop growth and production as part of soil health. However, our current knowledge microbial communities in tobacco soils their impact factors is limited. Methods In this study, we compared the characterization bacterial fungal response to regional rootstock disease differences. Results discussion The results showed that diversity composition responded more strongly differences than diseases, while niche breadth was sensitive fungi Similarly, core taxa shared by three regions accounted 21.73% 20.62% all OTUs, respectively, which much lower RD NRD each region, ranging from 44.87% 62.14%. Meanwhile, topological characteristics, connectivity, stability networks different also verified high responsiveness regions. diseases had a direct effect on Conclusion This provided insight into interactions between communities, differences, with important implications maintaining health improving yield quality.

Language: Английский

---

Upper respiratory tract microbiome profiles in SARS-CoV-2 Delta and Omicron infected patients exhibit variant specific patterns and robust prediction of disease groups

Microbiology Spectrum, Journal Year: 2023, Volume and Issue: 11(6)

Published: Oct. 31, 2023

The role of the upper respiratory tract (URT) microbiome in predicting lung health has been documented several studies. dysbiosis COVID patients associated with disease outcomes by modulating host immune system. However, although it known that different SARS-CoV-2 variants manifest distinct transmissibility and mortality rates human populations, their effect on composition diversity URT not studied to date. Unlike older variant (Delta), newer (Omicron) have become more transmissible lesser symptoms also changed significantly. Hence, present study, we investigated change Delta Omicron identified variant-specific signatures will be useful assessment can utilized for nasal probiotic therapy future.

Language: Английский

---

Characteristics of The Bleached Microbiome of The Generalist CoralPocillopora damicornisfrom Two Distinct Reef Habitats

Integrative Organismal Biology, Journal Year: 2023, Volume and Issue: 5(1)

Published: Jan. 1, 2023

Synopsis Generalist coral species may play an important role in predicting, managing, and responding to the growing reef crisis as sea surface temperatures are rising wide bleaching events becoming more common. Pocilloporids amongst most widely distributed studied of generalist corals, characterized by a broad geographic distribution, phenotypic plasticity, tolerance sub-optimal conditions for recruitment survival. Emerging research indicates that microbial communities associated with Pocilloporid corals be contributing their persistence on reefs impacted thermal stress; however, we lack detailed information shifts coral–bacterial symbiosis during across many habitats these found. Here, bacterial healthy bleached Pocillopora damicornis occurred austral summer 2020 Heron Island, southern Great Barrier Reef, 2019 Lord Howe southerly Australia. Regardless location, significant differences α β diversities, core community, inferred functional profile microbiome P. were not detected. Consistent previous reports, patterns microbiome, including no increase pathogenic taxa or evidence dysbiosis, conserved responses. We hypothesize resilience holobiont interactions aid survive Symbiodiniaceae loss contribute success Pocilloporids.

Language: Английский

---

Microbiome succession during apple fruit development: Healthy and pathological microbial assemblages

Postharvest Biology and Technology, Journal Year: 2023, Volume and Issue: 209, P. 112679 - 112679

Published: Nov. 30, 2023

Language: Английский

---