数字农科院2.0

Genotype-dependent responses of pepper endophytes to soil microbial community shifts induced by allyl isothiocyanate fumigation

文献类型： 外文期刊

作者： Tian, Wenfeng;Wang, Qiuxia;Cao, Aocheng;Yan, Dongdong;Li, Yuan;Liu, Zhoubin;Yang, Bozhi;Fang, Wensheng

作者机构：

关键词： soil fumigation;endophyte;soil microorganism;AITC;genotype;pepper

期刊名称： FRONTIERS IN MICROBIOLOGY

ISSN：

年卷期： 2025 年 16 卷

页码：

收录情况： SCIE（2025版）

摘要： Introduction Allyl isothiocyanate (AITC) has demonstrated efficacy as a soil fumigant, effectively controlling soil-borne pathogens and nematodes. Although AITC has a significant effect on soil microbial communities, whether fumigation affects the production of crop endophytes is unclear.Methods In this study, AITC was used to fumigate the soil, and the response of endophytic bacteria (in roots, stems, and leaves) in different pepper genotypes (Xiangla359, La Xuan, Shuang Jiao) was investigated.Results Fumigation with AITC significantly increased soil microbial diversity, stimulated the growth of Actinomycetota, and inhibited Pseudomonadota. However, the effects on endophytic bacteria varied among pepper varieties. Specifically, fumigation significantly reduced microbial diversity in the roots and leaves of Xiangla359, but had no significant effect on La Xuan and Shuang Jiao. Furthermore, the growth-promoting effect of AITC was most pronounced in Xiangla359.Conclusion Our results suggest that while AITC fumigation significantly alters soil microbial diversity and composition, its effects on crop endophytes are genotype-dependent. These findings provide insight into the complex interactions between soil microbial communities and crop endophytes in response to soil fumigation.

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