Combined control of plant diseases by Bacillus subtilis SL44 and Enterobacter hormaechei Wu15,Science of the Total Environment

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Combined control of plant diseases by Bacillus subtilis SL44 and Enterobacter hormaechei Wu15
Science of the Total Environment ( IF 8.2 ) Pub Date : 2024-05-16 , DOI: 10.1016/j.scitotenv.2024.173297
Jianwen Wang ₁ , Zihe Deng ₂ , Xizhuo Gao ₃ , Jiajia Long ₃ , Yiwei Wang ₃ , Wanying Wang ₃ , Chun Li ₄ , Yanhui He ₅ , Zhansheng Wu ₃

Affiliation

School of Chemistry and Chemical Engineering/Key Lab. for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, PR China; School of Environmental and Chemical Engineering, Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries, Engineering Research Center of Biological Resources Development and Pollution Control Universities of Shaanxi Province, Key Laboratory of Textile Dyeing Wastewater Treatment Universities of Shaanxi Province, Xi'an Polytechnic University, Xi'an 710048, PR China; Department of Chemical Engineering, Tsinghua University, Beijing 100084, PR China.
School of Chemistry and Chemical Engineering/Key Lab. for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, PR China; School of Environmental and Chemical Engineering, Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries, Engineering Research Center of Biological Resources Development and Pollution Control Universities of Shaanxi Province, Key Laboratory of Textile Dyeing Wastewater Treatment Universities of Shaanxi Province, Xi'an Polytechnic University, Xi'an 710048, PR China.
School of Environmental and Chemical Engineering, Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries, Engineering Research Center of Biological Resources Development and Pollution Control Universities of Shaanxi Province, Key Laboratory of Textile Dyeing Wastewater Treatment Universities of Shaanxi Province, Xi'an Polytechnic University, Xi'an 710048, PR China.
School of Chemistry and Chemical Engineering/Key Lab. for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, PR China; Department of Chemical Engineering, Tsinghua University, Beijing 100084, PR China.
School of Environmental and Chemical Engineering, Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries, Engineering Research Center of Biological Resources Development and Pollution Control Universities of Shaanxi Province, Key Laboratory of Textile Dyeing Wastewater Treatment Universities of Shaanxi Province, Xi'an Polytechnic University, Xi'an 710048, PR China; Shanxi Qinfengkesheng Biotechnology Company Ltd., Xianyang 713700, PR China.

Co-incubation of plant growth promoting rhizobacteria (PGPRs) have been proposed as a potential alternative to pesticides for controlling fungal pathogens in crops, but their synergism mechanisms are not yet fully understood. In this study, combined use of SL44 and Wu15 could decrease the density of and and enhance the growth of beneficial bacteria on the mycelial surface, thereby mitigating disease severity. Meanwhile, PGPR application led to a reorganization of the rhizosphere microbial community through modulating its metabolites, such as extracellular polymeric substances and chitinase. These metabolites demonstrated positive effects on attracting and enhancing conventional periphery bacteria, inhibiting fungal pathogens and promoting soil health effectively. The improvement in the microbial community structure altered the trophic mode of soil fungal communities, effectively decreasing the proportion of saprotrophic soil and reducing fungal plant diseases. Certain combinations of PGPR have the potential to serve as precise instruments for managing plant pathogens.

中文翻译：

枯草芽孢杆菌SL44与霍马肠杆菌Wu15联合防治植物病害

植物根际生长促进细菌（PGPR）的共培养已被提议作为农药的潜在替代品，用于控制作物中的真菌病原体，但其协同机制尚未完全了解。在本研究中，SL44和Wu15的联合使用可以降低菌丝体表面有益菌的密度并增强其生长，从而减轻疾病的严重程度。同时，PGPR的应用通过调节其代谢物（如细胞外聚合物和几丁质酶）导致根际微生物群落的重组。这些代谢物对吸引和增强常规外围细菌、抑制真菌病原体和有效促进土壤健康具有积极作用。微生物群落结构的改善改变了土壤真菌群落的营养模式，有效降低了腐养土壤的比例，减少了真菌植物病害。 PGPR 的某些组合有可能成为管理植物病原体的精确工具。

更新日期：2024-05-16

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