Identification and utilization of a new Bacillus amyloliquefaciens XY-1 against Fusarium head blight
文献类型： 外文期刊
作者： Xu, Xiao 1 ; Cheng, Yifan 2 ; Fang, Zhengwu 1 ; Yin, Junliang 1 ; Shen, Huiquan 2 ; Ma, Dongfang 1 ;
作者机构： 1.Yangtze Univ, Coll Agr, Key Lab Sustainable Crop Prod Middle Reaches Yangt, Minist & Prov, Jingzhou, Peoples R China
2.Jiangsu Acad Agr Sci, Jiangsu Coastal Area Inst Agr Sci, Yancheng, Peoples R China
关键词： Bacillus amyloliquefaciens; Biological control; Fusarium head blight; Antagonistic bacterium; XY-1
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：6.627； 五年影响因子：7.255 ）
ISSN： 1664-462X
年卷期： 2022 年 13 卷
页码：
收录情况： SCI
摘要： Fusarium head blight (FHB) is a global wheat grain disease caused by Fusarium graminearum. Biological control of FHB is considered to be an alternative disease management strategy that is environmentally benign, durable, and compatible with other control measures. In this study, to screen antagonistic bacteria with the potential to against FHB, 45 strains were isolated from different tissues of wheat. Among them, seven strains appeared to effectively inhibit F. graminearum growth, the antagonistic bacterium named XY-1 showed a highly antagonistic effect against FHB using dual culture assays. The strain XY-1 was identified as Bacillus amyloliquefaciens by 16S rDNA sequence. Antibiotic tolerance of antagonistic bacteria showed that XY-1 had antagonistic activity against Colletotrichum gloeosporioides, Rhizoctonia solani, Sclerotium rolfsii, and Alternaria alternata. Nutrition tests showed that the most suitable carbon and nitrogen sources were glucose and beef extract, respectively. The optimum growth temperature and pH value were 28 celcius and 7.4. Antibiotics tolerance cultivation showed that XY-1 had strong resistance to Chloramphenicol and Ampicillin. Wheat spikes inoculation antagonism tests showed that strain XY-1 displayed strong antifungal activity against F. graminearum. Our study laid a theoretical foundation for the application of strain XY-1 as a biological agent in the field to control FHB.
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