Generalists and keystone species drive rhizosphere microbial diversity and stability in feral Brassica napus

Abstract Brassica napus (rapeseed) is a globally important crop, primarily valued for its oil production. However, feral B. napus in non-agricultural areas remains under-researched. This study aims to examine the roles of microbial generalists and network keystone species in shaping microbial divers...

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Main Authors: Yingshun Cui, Jihoon Kim, Mengqi Sun, Mirye Park, Kyong-Hee Nam, Jun-Woo Lee, Chang Soo Lee, An Suk Lim, Seong-Jun Chun
Format: Article
Language:English
Published: Nature Portfolio 2025-05-01
Series:Scientific Reports
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Online Access:https://doi.org/10.1038/s41598-025-02562-2
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author Yingshun Cui
Jihoon Kim
Mengqi Sun
Mirye Park
Kyong-Hee Nam
Jun-Woo Lee
Chang Soo Lee
An Suk Lim
Seong-Jun Chun
author_facet Yingshun Cui
Jihoon Kim
Mengqi Sun
Mirye Park
Kyong-Hee Nam
Jun-Woo Lee
Chang Soo Lee
An Suk Lim
Seong-Jun Chun
author_sort Yingshun Cui
collection DOAJ
description Abstract Brassica napus (rapeseed) is a globally important crop, primarily valued for its oil production. However, feral B. napus in non-agricultural areas remains under-researched. This study aims to examine the roles of microbial generalists and network keystone species in shaping microbial diversity and network stability of feral B. napus. We analyzed prokaryotic, fungal, and eukaryotic communities in the rhizosphere and bulk soil from five grassland sites. The rhizosphere microbial communities differed significantly from those in adjacent bulk soil, showing lower diversity and richness. Pseudomonas brassicacearum (bacterium), Olpidium brassicae (fungus), and Glissomonadida (eukaryote) were predominantly found in the rhizosphere. Inter- and intra-kingdom association occurred almost exclusively within the rhizosphere, with low interconnectivity compared to the bulk soil, and network keystone species served to bridge these connections. Furthermore, structural equation modeling highlighted the role of generalists and network keystone species in maintaining microbial diversity and stability. Feral B. napus selectively influenced rhizospheric generalists, which, along with keystone species, played key roles in determining microbial diversity and network stability, controlling community structure and interspecies interactions.
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spelling doaj-art-a7c4a1f97d7a4316bb57e0e4790433012025-08-20T02:34:07ZengNature PortfolioScientific Reports2045-23222025-05-0115111410.1038/s41598-025-02562-2Generalists and keystone species drive rhizosphere microbial diversity and stability in feral Brassica napusYingshun Cui0Jihoon Kim1Mengqi Sun2Mirye Park3Kyong-Hee Nam4Jun-Woo Lee5Chang Soo Lee6An Suk Lim7Seong-Jun Chun8National Ecosystem Survey Team, National Institute of EcologyLMO Team, National Institute of EcologyCollege of life science, Changchun Sci-Tech UniversityProtist Research Division, Nakdonggang National Institute of Biological ResourcesLMO Team, National Institute of EcologyLMO Team, National Institute of EcologyFungi Research Division, Nakdonggang National Institute of Biological ResourcesDivision of Life Science and Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National UniversityLMO Team, National Institute of EcologyAbstract Brassica napus (rapeseed) is a globally important crop, primarily valued for its oil production. However, feral B. napus in non-agricultural areas remains under-researched. This study aims to examine the roles of microbial generalists and network keystone species in shaping microbial diversity and network stability of feral B. napus. We analyzed prokaryotic, fungal, and eukaryotic communities in the rhizosphere and bulk soil from five grassland sites. The rhizosphere microbial communities differed significantly from those in adjacent bulk soil, showing lower diversity and richness. Pseudomonas brassicacearum (bacterium), Olpidium brassicae (fungus), and Glissomonadida (eukaryote) were predominantly found in the rhizosphere. Inter- and intra-kingdom association occurred almost exclusively within the rhizosphere, with low interconnectivity compared to the bulk soil, and network keystone species served to bridge these connections. Furthermore, structural equation modeling highlighted the role of generalists and network keystone species in maintaining microbial diversity and stability. Feral B. napus selectively influenced rhizospheric generalists, which, along with keystone species, played key roles in determining microbial diversity and network stability, controlling community structure and interspecies interactions.https://doi.org/10.1038/s41598-025-02562-2Feral Brassica napusRhizosphereMicrobial communitiesEcological networkRhizosphere generalist
spellingShingle Yingshun Cui
Jihoon Kim
Mengqi Sun
Mirye Park
Kyong-Hee Nam
Jun-Woo Lee
Chang Soo Lee
An Suk Lim
Seong-Jun Chun
Generalists and keystone species drive rhizosphere microbial diversity and stability in feral Brassica napus
Scientific Reports
Feral Brassica napus
Rhizosphere
Microbial communities
Ecological network
Rhizosphere generalist
title Generalists and keystone species drive rhizosphere microbial diversity and stability in feral Brassica napus
title_full Generalists and keystone species drive rhizosphere microbial diversity and stability in feral Brassica napus
title_fullStr Generalists and keystone species drive rhizosphere microbial diversity and stability in feral Brassica napus
title_full_unstemmed Generalists and keystone species drive rhizosphere microbial diversity and stability in feral Brassica napus
title_short Generalists and keystone species drive rhizosphere microbial diversity and stability in feral Brassica napus
title_sort generalists and keystone species drive rhizosphere microbial diversity and stability in feral brassica napus
topic Feral Brassica napus
Rhizosphere
Microbial communities
Ecological network
Rhizosphere generalist
url https://doi.org/10.1038/s41598-025-02562-2
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