Jia Mingyun, Liu Zhuangzhuang, Wei Jiguang, Li Qi, Hou Zhaoqi, Sun Ling, Yu Hong, Yu Jinping, Lu Shipeng
Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing, China.
Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Nanjing, China.
Front Microbiol. 2024 Sep 13;15:1460067. doi: 10.3389/fmicb.2024.1460067. eCollection 2024.
Rhizosphere microbiotas play vital roles in resisting environmental stress, transforming soil nutrients, and promoting plant health, growth, and productivity. The effects of rhizosphere microbial community shaping and the characteristics and functions of keystone taxa on blueberries were comprehensively studied by examining the rhizobacteria of healthy old trees (O), young seedlings (OG), and poorly growing seedlings (OB) of O'Neal blueberries. Our results showed that rhizobacterial diversity followed the order OB > > OG > O, and the microbial community of OG was similar to that of O, while that of OB was distinctly different. The predominant rhizobacteria identified included , , , , and . were highly enriched in healthy blueberries, with identified as a key genus that significantly enhanced blueberry growth when inoculated. and were common core bacteria in the blueberry rhizosphere. In contrast, were the predominant phylum in poorly growing OB, with the specific -related and -related genera acting as keystone taxa that shaped the microbial community. In addition, bacterial species in might act as a potential pathogen predicted by BugBase. Taken together, these findings provide fundamental insights into the development of the blueberry rhizosphere microbial community and highlight the role of beneficial rhizobacteria, such as , in enhancing blueberry growth. This knowledge could contribute to the exploitation of beneficial rhizobacteria and the prevention of pathogens in modern agriculture.
根际微生物群落在抵抗环境胁迫、转化土壤养分以及促进植物健康、生长和生产力方面发挥着至关重要的作用。通过研究奥尼尔蓝莓健康老树（O）、幼苗（OG）和生长不良幼苗（OB）的根际细菌，全面研究了根际微生物群落形成的影响以及关键类群对蓝莓的特征和功能。我们的结果表明，根际细菌多样性遵循OB >> OG > O的顺序，OG的微生物群落与O相似，而OB的微生物群落明显不同。鉴定出的主要根际细菌包括 、 、 、 和 。 在健康蓝莓中高度富集，其中 被鉴定为接种时能显著促进蓝莓生长的关键属。 和 是蓝莓根际常见的核心细菌。相比之下， 在生长不良的OB中是主要门类，与特定 和 相关的属作为塑造微生物群落的关键类群。此外， 根据BugBase预测， 中的细菌物种可能是潜在病原体。综上所述，这些发现为蓝莓根际微生物群落的发展提供了基本见解，并突出了有益根际细菌（如 ）在促进蓝莓生长中的作用。这些知识有助于在现代农业中开发有益根际细菌并预防病原体。
