Homogeneous selection shapes rare biosphere in rhizosphere of medicinal plant

Knowledge about the ecological patterns of abundant and rare bacteria in rhizosphere is still lacking. Through a large-scale sampling across the arable area of a medicinal plant Panax notoginseng, we examined the community assembly of abundant and rare rhizobacteria as well as their putative functio...

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Autores principales:	Guozhuang Zhang, Guangfei Wei, Fugang Wei, Zhongjian Chen, Mingjun He, Shuo Jiao, Yong Wang, Yuqi Yu, Linlin Dong, Shilin Chen
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Rare biosphere Community assembly Rhizosphere effect Null model Co-occurrence network Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/8530b06392104c3fbd3cbab49c406f2c
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id	oai:doaj.org-article:8530b06392104c3fbd3cbab49c406f2c
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spelling	oai:doaj.org-article:8530b06392104c3fbd3cbab49c406f2c2021-12-01T04:57:22ZHomogeneous selection shapes rare biosphere in rhizosphere of medicinal plant1470-160X10.1016/j.ecolind.2021.107981https://doaj.org/article/8530b06392104c3fbd3cbab49c406f2c2021-10-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21006464https://doaj.org/toc/1470-160XKnowledge about the ecological patterns of abundant and rare bacteria in rhizosphere is still lacking. Through a large-scale sampling across the arable area of a medicinal plant Panax notoginseng, we examined the community assembly of abundant and rare rhizobacteria as well as their putative functions and co-occurrence patterns. At local level, the rare taxa exhibited significantly stronger phylogenetic clustering than the abundant taxa. At metacommunity level, both two subcommunities showed significant biogeographic patterns, but they were assembled by different ecological processes. Null model analysis showed that dispersal limitation (84.68%) governed the assembly of abundant subcommunity, whereas homogeneous selection (90.11%) dominated the dynamics of rare subcommunity. Although the putative functions indicated that the rare taxa potentially enriched more functional traits associated with plant-microbe interactions, the overall abundance profiles of putative pathways in two subcommunities exhibited significant collinearity. Additionally, the topological properties of abundant taxa in the co-occurrence network were significantly higher than those of rare taxa. We propose that stochasticity and determinism dominate the assembly of abundant and rare subcommunities, respectively. The abundant taxa may exhibit stronger environmental adaptability, while the rare taxa are more likely the result of rhizosphere effect. These findings also emphasize the importance of integrating phylogeny in ecological researches on plant-associated microbiota.Guozhuang ZhangGuangfei WeiFugang WeiZhongjian ChenMingjun HeShuo JiaoYong WangYuqi YuLinlin DongShilin ChenElsevierarticleRare biosphereCommunity assemblyRhizosphere effectNull modelCo-occurrence networkEcologyQH540-549.5ENEcological Indicators, Vol 129, Iss , Pp 107981- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Rare biosphere Community assembly Rhizosphere effect Null model Co-occurrence network Ecology QH540-549.5
spellingShingle	Rare biosphere Community assembly Rhizosphere effect Null model Co-occurrence network Ecology QH540-549.5 Guozhuang Zhang Guangfei Wei Fugang Wei Zhongjian Chen Mingjun He Shuo Jiao Yong Wang Yuqi Yu Linlin Dong Shilin Chen Homogeneous selection shapes rare biosphere in rhizosphere of medicinal plant
description	Knowledge about the ecological patterns of abundant and rare bacteria in rhizosphere is still lacking. Through a large-scale sampling across the arable area of a medicinal plant Panax notoginseng, we examined the community assembly of abundant and rare rhizobacteria as well as their putative functions and co-occurrence patterns. At local level, the rare taxa exhibited significantly stronger phylogenetic clustering than the abundant taxa. At metacommunity level, both two subcommunities showed significant biogeographic patterns, but they were assembled by different ecological processes. Null model analysis showed that dispersal limitation (84.68%) governed the assembly of abundant subcommunity, whereas homogeneous selection (90.11%) dominated the dynamics of rare subcommunity. Although the putative functions indicated that the rare taxa potentially enriched more functional traits associated with plant-microbe interactions, the overall abundance profiles of putative pathways in two subcommunities exhibited significant collinearity. Additionally, the topological properties of abundant taxa in the co-occurrence network were significantly higher than those of rare taxa. We propose that stochasticity and determinism dominate the assembly of abundant and rare subcommunities, respectively. The abundant taxa may exhibit stronger environmental adaptability, while the rare taxa are more likely the result of rhizosphere effect. These findings also emphasize the importance of integrating phylogeny in ecological researches on plant-associated microbiota.
format	article
author	Guozhuang Zhang Guangfei Wei Fugang Wei Zhongjian Chen Mingjun He Shuo Jiao Yong Wang Yuqi Yu Linlin Dong Shilin Chen
author_facet	Guozhuang Zhang Guangfei Wei Fugang Wei Zhongjian Chen Mingjun He Shuo Jiao Yong Wang Yuqi Yu Linlin Dong Shilin Chen
author_sort	Guozhuang Zhang
title	Homogeneous selection shapes rare biosphere in rhizosphere of medicinal plant
title_short	Homogeneous selection shapes rare biosphere in rhizosphere of medicinal plant
title_full	Homogeneous selection shapes rare biosphere in rhizosphere of medicinal plant
title_fullStr	Homogeneous selection shapes rare biosphere in rhizosphere of medicinal plant
title_full_unstemmed	Homogeneous selection shapes rare biosphere in rhizosphere of medicinal plant
title_sort	homogeneous selection shapes rare biosphere in rhizosphere of medicinal plant
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/8530b06392104c3fbd3cbab49c406f2c
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Homogeneous selection shapes rare biosphere in rhizosphere of medicinal plant

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