pH Adaptation stabilizes bacterial communities

Abstract Diverse microbes in nature play an important role in ecosystem functioning and human health. Nevertheless, it remains unclear how microbial communities are maintained. This study proposes that evolutionary changes in the pH niche of bacteria can promote bacterial coexistence. Bacteria modif...

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Main Author: Akihiko Mougi
Format: Article
Language:English
Published: Nature Portfolio 2024-10-01
Series:npj Biodiversity
Online Access:https://doi.org/10.1038/s44185-024-00063-5
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author Akihiko Mougi
author_facet Akihiko Mougi
author_sort Akihiko Mougi
collection DOAJ
description Abstract Diverse microbes in nature play an important role in ecosystem functioning and human health. Nevertheless, it remains unclear how microbial communities are maintained. This study proposes that evolutionary changes in the pH niche of bacteria can promote bacterial coexistence. Bacteria modify the pH environment and also react to it. The optimal environmental pH level for a given species or pH niche can adaptively change in response to the changes in environmental pH caused by the bacteria themselves. Theory shows that the evolutionary changes in the pH niche can stabilize otherwise unstable large bacterial communities, particularly when the evolution occurs rapidly and diverse bacteria modifying pH in different directions coexist in balance. The stabilization is sufficiently strong to mitigate the inherent instability of system complexity with many species and interactions. This model can show a relationship between pH and diversity in natural bacterial systems.
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spelling doaj-art-1a0cba4e47fc4727827f0483d35e3a8a2025-08-20T01:50:38ZengNature Portfolionpj Biodiversity2731-42432024-10-01311710.1038/s44185-024-00063-5pH Adaptation stabilizes bacterial communitiesAkihiko Mougi0Institute of Agricultural and Life Sciences, Academic Assembly, Shimane UniversityAbstract Diverse microbes in nature play an important role in ecosystem functioning and human health. Nevertheless, it remains unclear how microbial communities are maintained. This study proposes that evolutionary changes in the pH niche of bacteria can promote bacterial coexistence. Bacteria modify the pH environment and also react to it. The optimal environmental pH level for a given species or pH niche can adaptively change in response to the changes in environmental pH caused by the bacteria themselves. Theory shows that the evolutionary changes in the pH niche can stabilize otherwise unstable large bacterial communities, particularly when the evolution occurs rapidly and diverse bacteria modifying pH in different directions coexist in balance. The stabilization is sufficiently strong to mitigate the inherent instability of system complexity with many species and interactions. This model can show a relationship between pH and diversity in natural bacterial systems.https://doi.org/10.1038/s44185-024-00063-5
spellingShingle Akihiko Mougi
pH Adaptation stabilizes bacterial communities
npj Biodiversity
title pH Adaptation stabilizes bacterial communities
title_full pH Adaptation stabilizes bacterial communities
title_fullStr pH Adaptation stabilizes bacterial communities
title_full_unstemmed pH Adaptation stabilizes bacterial communities
title_short pH Adaptation stabilizes bacterial communities
title_sort ph adaptation stabilizes bacterial communities
url https://doi.org/10.1038/s44185-024-00063-5
work_keys_str_mv AT akihikomougi phadaptationstabilizesbacterialcommunities