<i>Bacillus velezensis</i> TCS001 Enhances the Resistance of Hickory to <i>Phytophthora cinnamomi</i> and Reshapes the Rhizosphere Microbial Community

<i>Bacillus velezensis</i> TCS001 Enhances the Resistance of Hickory to <i>Phytophthora cinnamomi</i> and Reshapes the Rhizosphere Microbial Community

<i>Phytophthora cinnamomi</i> causes significant root rot in hickory, leading to substantial yield losses. While <i>Bacillus</i> spp. are recognized as beneficial rhizosphere microorganisms, their application against hickory root rot and their impact on rhizosphere microbial...

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Main Authors: Chenshun Xie, Yuntian Wu, Zhonghao Wu, Hao Cao, Xiaohui Huang, Feng Cui, Shuai Meng, Jie Chen
Format: Article
Language:English
Published: MDPI AG 2025-01-01
Series:Agriculture
Subjects:
<i>Phytophthora cinnamomi</i>
<i>Bacillus velezensis</i> TCS001
<i>Carya cathayensis</i>
root rot
rhizosphere microbial
Online Access:https://www.mdpi.com/2077-0472/15/2/193
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Summary:<i>Phytophthora cinnamomi</i> causes significant root rot in hickory, leading to substantial yield losses. While <i>Bacillus</i> spp. are recognized as beneficial rhizosphere microorganisms, their application against hickory root rot and their impact on rhizosphere microbial communities remain under-investigated. This study demonstrated that <i>Bacillus velezensis</i> TCS001 significantly inhibited <i>P. cinnamomi</i> ST402 growth in vitro, and achieved 71% efficacy in root rot disease management. Scanning electron microscopy (SEM) revealed that TCS001 fermentation filtrate induced mycelial deformities in <i>P. cinnamomi</i>. An analysis of <i>α</i> and <i>β</i> diversity indicated a significant impact of TCS001 on rhizosphere bacterial community richness and diversity, with minimal effects on the fungal community. Moreover, TCS001 altered the hickory rhizosphere microbiome co-occurrence network. The differential abundance analysis suggests that TCS001 promotes the recruitment of beneficial microbes associated with disease resistance, thereby suppressing disease development. These findings underscore the influence of TCS001 on the hickory rhizosphere microbiome in the presence of pathogens, providing valuable data for future research and the development of effective biocontrol strategies for hickory root rot.
ISSN:2077-0472

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