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Tacrolimus analogue produced by Bacillus amyloliquefaciens HSSN09 suppresses watermelon Fusarium wilt by antagonizing FON

文献类型: 外文期刊

作者: Yang, Bing -Ye 1 ; Yang, Ji-Xiao 1 ; Wang, Gang 1 ; Dong, Wen -Pan 1 ; Xu, Pei -Ling 1 ; Zheng, Ying 1 ; Yang, Wei 4 ; Yao, Xie-Feng 5 ; Xu, Jin-Hua 5 ; Guo, Jian-Hua 1 ; Luo, Yu -Ming 4 ; Niu, Dong-Dong 1 ; Yu, Yi-Yang 3 ; Jiang, Chun-Hao 1 ;

作者机构: 1.Nanjing Agr Univ, Coll Plant Protect, Dept Plant Pathol, Nanjing 210095, Peoples R China

2.Nanjing Agr Univ, Minist Educ,Key Lab Plant Immun, Key Lab Integrated Management Crop Dis & Pests,Min, Key Lab Integrated Pest Management Crops East Chin, Nanjing 210095, Peoples R China

3.Nanjing Tech Univ, Coll Food Sci & Light Ind, Nanjing 211800, Peoples R China

4.Huaiyin Normal Univ, Coll Life Sci, Jiangsu Key Lab Ecoagr Biotechnol Hongze Lake, Huaian 223300, Peoples R China

5.Jiangsu Acad Agr Sci, Inst Vegetable Crops, Jiangsu Key Lab Hort Crop Genet Improvement, Nanjing, Peoples R China

6.Nanjing Agr Univ, Coll Plant Protect, Engn Ctr Bioresource Pesticide Jiangsu Prov, Dept Plant Pathol, Nanjing 210095, Peoples R China

关键词: Bacillus amyloliquefaciens; Fusarium oxysporum; Biocontrol mechanism; Secondary metabolites; Tacrolimus

期刊名称:BIOLOGICAL CONTROL ( 影响因子:4.2; 五年影响因子:4.1 )

ISSN: 1049-9644

年卷期: 2024 年 189 卷

页码:

收录情况: SCI

摘要: Watermelon Fusarium wilt caused by Fusarium oxysporum f. sp. niveum (FON) is one of the most devastating diseases in watermelon production. Biological control approaches are efficient and environmentally -friendly, thus have aroused broad interest. However, only a few biocontrol factors/molecules have been characterized due to varied genomes and diversified secreted secondary metabolites of biocontrol microorganisms. We report the screen and identification of a Bacillus amyloliquefaciens strain HSSN09 with high antagonism to FON and watermelon growth promotion capacity. B. amyloliquefaciens HSSN09 and its secondary metabolites showed inhibition on FON mycelial growth, spore formation and spore germination. Metabolomes of the highly antagonistic strain B. amyloliquefaciens HSSN09, medium antagonistic strain B. amyloliquefaciens FGW53, weakly antagonistic strain B. subtilis JC03 and non -antagonistic strain B. cereus FGW109 were compared with LC-MS/MS. By antagonistic assay, tacrolimus was screened out among the 531 molecules that appeared in the sequencing results of HSSN09 metabolome but not in that of the non -antagonistic strain without significant inhibition on the growth of FON. Among the four tested Bacillus strains, tacrolimus analogue was only observed in the supernatant of HSSN09 by HPLC and MALDI-TOF-MS. We further confirmed the ability of tacrolimus to suppress FON and promote watermelon seedling growth.

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