Selenium Combined with Methyl Jasmonate to Control Tomato Gray Mold by Optimizing Microbial Community Structure in Plants
文献类型： 外文期刊
作者： Li, Changyin 1 ; Hu, Chengxiao 1 ; Xie, Jiatao 1 ; Shi, Guangyu 1 ; Wang, Xu 4 ; Yuan, Xiang 1 ; Li, Keyi 1 ; Chen, Siqi 1 ; Zhao, Xiaohu 1 ; Fan, Guocheng 2 ;
作者机构： 1.Huazhong Agr Univ, Coll Resources & Environm, State Key Lab Agr Microbiol, Wuhan 430070, Peoples R China
2.Fujian Key Lab Monitoring & Integrated Management, Fuzhou 350013, Peoples R China
3.Suzhou Univ Sci & Technol, Coll Environm Sci & Engn, Suzhou 215009, Peoples R China
4.Guangdong Acad Agr Sci, Inst Qual Stand & Monitoring Technol Agroprod, Guangzhou 510640, Peoples R China
关键词： tomato; gray mold; incidence; Selenium; Methyl jasmonate; microbes
期刊名称：JOURNAL OF FUNGI （ 影响因子：5.724； 五年影响因子：6.413 ）
ISSN：
年卷期： 2022 年 8 卷 7 期
页码：
收录情况： SCI
摘要： Tomato cultivation is seriously affected by infection from Botrytis cinerea. The safe and effective control of tomato gray mold remains elusive. Plant-related microbial communities regulate not only plant metabolism but also plant immune systems. In this study, we observed that Selenium application in soil combined with foliar spraying of methyl jasmonate could reduce Botrytis cinerea infection in tomato fruits and leaves and improve tomato fruit quality. The infection rate of leaves decreased from 42.19% to 25.00%, and the vitamin C content increased by 22.14%. The bacterial community structure of the tomato was studied by using amplicon sequencing technology. The leaf bacterial alpha diversity of tomatoes treated with Se plus methyl jasmonate was significantly higher than that of the control. Then we isolated five strains antagonistic to Botrytis cinerea in vitro from tomato leaves in the treatment of Se plus methyl jasmonate. The antagonistic strains were identified as Bacillus subtilis and Bacillus velezensis. Spraying mixed antagonistic strain suspension significantly inhibited the diameter of Botrytis cinerea with an inhibition rate of 40.99%. This study revealed the key role of plant-beneficial bacteria recruited by Se combined with methyl jasmonate in improving tomato plant disease resistance. These findings may benefit our understanding of the new regulation of microorganisms on Botrytis cinerea.
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