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Fine-scale diversity of microbial communities due to satellite niches in boom and bust environments

Recent observations have revealed that closely related strains of the same microbial species can stably coexist in natural and laboratory settings subject to boom and bust dynamics and serial dilutions, respectively. However, the possible mechanisms enabling the coexistence of only a handful of stra...

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Autores principales: Fridman, Yulia, Wang, Zihan, Maslov, Sergei, Goyal, Akshit
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9829172/
https://www.ncbi.nlm.nih.gov/pubmed/36574450
http://dx.doi.org/10.1371/journal.pcbi.1010244
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author Fridman, Yulia
Wang, Zihan
Maslov, Sergei
Goyal, Akshit
author_facet Fridman, Yulia
Wang, Zihan
Maslov, Sergei
Goyal, Akshit
author_sort Fridman, Yulia
collection PubMed
description Recent observations have revealed that closely related strains of the same microbial species can stably coexist in natural and laboratory settings subject to boom and bust dynamics and serial dilutions, respectively. However, the possible mechanisms enabling the coexistence of only a handful of strains, but not more, have thus far remained unknown. Here, using a consumer-resource model of microbial ecosystems, we propose that by differentiating along Monod parameters characterizing microbial growth rates in high and low nutrient conditions, strains can coexist in patterns similar to those observed. In our model, boom and bust environments create satellite niches due to resource concentrations varying in time. These satellite niches can be occupied by closely related strains, thereby enabling their coexistence. We demonstrate that this result is valid even in complex environments consisting of multiple resources and species. In these complex communities, each species partitions resources differently and creates separate sets of satellite niches for their own strains. While there is no theoretical limit to the number of coexisting strains, in our simulations, we always find between 1 and 3 strains coexisting, consistent with known experiments and observations.
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spelling pubmed-98291722023-01-10 Fine-scale diversity of microbial communities due to satellite niches in boom and bust environments Fridman, Yulia Wang, Zihan Maslov, Sergei Goyal, Akshit PLoS Comput Biol Research Article Recent observations have revealed that closely related strains of the same microbial species can stably coexist in natural and laboratory settings subject to boom and bust dynamics and serial dilutions, respectively. However, the possible mechanisms enabling the coexistence of only a handful of strains, but not more, have thus far remained unknown. Here, using a consumer-resource model of microbial ecosystems, we propose that by differentiating along Monod parameters characterizing microbial growth rates in high and low nutrient conditions, strains can coexist in patterns similar to those observed. In our model, boom and bust environments create satellite niches due to resource concentrations varying in time. These satellite niches can be occupied by closely related strains, thereby enabling their coexistence. We demonstrate that this result is valid even in complex environments consisting of multiple resources and species. In these complex communities, each species partitions resources differently and creates separate sets of satellite niches for their own strains. While there is no theoretical limit to the number of coexisting strains, in our simulations, we always find between 1 and 3 strains coexisting, consistent with known experiments and observations. Public Library of Science 2022-12-27 /pmc/articles/PMC9829172/ /pubmed/36574450 http://dx.doi.org/10.1371/journal.pcbi.1010244 Text en © 2022 Fridman et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Fridman, Yulia
Wang, Zihan
Maslov, Sergei
Goyal, Akshit
Fine-scale diversity of microbial communities due to satellite niches in boom and bust environments
title Fine-scale diversity of microbial communities due to satellite niches in boom and bust environments
title_full Fine-scale diversity of microbial communities due to satellite niches in boom and bust environments
title_fullStr Fine-scale diversity of microbial communities due to satellite niches in boom and bust environments
title_full_unstemmed Fine-scale diversity of microbial communities due to satellite niches in boom and bust environments
title_short Fine-scale diversity of microbial communities due to satellite niches in boom and bust environments
title_sort fine-scale diversity of microbial communities due to satellite niches in boom and bust environments
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9829172/
https://www.ncbi.nlm.nih.gov/pubmed/36574450
http://dx.doi.org/10.1371/journal.pcbi.1010244
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