Endophytic Bacillus subtilis TR21 Improves Banana Plant Resistance to Fusarium oxysporum f. sp. cubense and Promotes Root Growth by Upregulating the Jasmonate and Brassinosteroid Biosynthesis Pathways
文献类型： 外文期刊
作者： Sun, Yunhao 1 ; Huang, Bingzhi 3 ; Cheng, Ping 1 ; Li, Chunji 1 ; Chen, Yanhong 4 ; Li, Yongjian 4 ; Zheng, Li 1 ; Xing, Juejun 5 ; Dong, Zhangyong 1 ; Yu, Guohui 1 ;
作者机构： 1.Zhongkai Univ Agr & Engn, Innovat Inst Plant Hlth, Guangzhou 510225, Peoples R China
2.Zhongkai Univ Agr & Engn, Coll Agr & Biol, Guangzhou 510225, Peoples R China
3.Guangdong Acad Agr Sci, Inst Fruit Tree Res, Guangzhou 510000, Peoples R China
4.Zhuhai Agr Sci Res Ctr, Zhuhai 519075, Peoples R China
5.Zhongkai Univ Agr & Engn, Lab & Equipment Management Dept, Guangzhou 510225, Peoples R China
关键词： antimicrobial or fungicide resistance; Bacillus subtilis TR21; bacterial pathogens; bioinformatics; biological control; biological control agents; biotechnology; computational biology; cultural control; disease control and pest management; endophytic interactions; endophytic microbes; 'Fenza No. 1'; fungal pathogens; Fusarium wilt of banana; pathogen effectors; pathogen recognition by plants; plant immune responses; plant stress and abiotic disorders; transcriptome
期刊名称：PHYTOPATHOLOGY （ 影响因子：4.01； 五年影响因子：4.457 ）
ISSN： 0031-949X
年卷期： 2022 年 112 卷 2 期
页码：
收录情况： SCI
摘要： The banana (Musa spp.) industry experiences dramatic annual losses from Fusarium wilt of banana disease, which is caused by the fungus Fusarium oxysporum f. sp. cubense (FOC). Pisang Awak banana 'Fenza No. 1' (Musa spp. cultivar Fenza No. 1), a major banana cultivar with high resistance to F. oxysporum f. sp. cubense race 4, is considered to be ideal for growth in problematic areas. However, 'Fenza No. 1' is still affected by F. oxysporum f. sp. cubense race 1 in the field. TR21 is an endophytic Bacillus subtilis strain isolated from orchids (Dendrobium sp.). Axillary spraying of banana plants with TR21 controls Fusarium wilt of banana, decreasing the growth period and increasing yields in the field. In this study, we established that TR21 increases root growth in different monocotyledonous plant species. By axillary inoculation, TR21 induced a similar transcriptomic change as that induced by F. oxysporum f. sp. cubense race 1 but also upregulated the biosynthetic pathways for the phytohormones brassinosteroid and jasmonic acid in 'Fenza No. 1' root tissues, indicating that TR21 increases Fusarium wilt of banana resistance, shortens growth period, and increases yield of banana by inducing specific transcriptional reprogramming and modulating phytohormone levels. These findings will contribute to the identification of candidate genes related to plant resistance against fungi in a nonmodel system and facilitate further study and exploitation of endophytic biocontrol agents.
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