Control of Wheat Fusarium Head Blight by Heat-Stable Antifungal Factor (HSAF) from Lysobacter enzymogenes
文献类型： 外文期刊
作者： Zhao, Yangyang 1 ; Cheng, Chao 2 ; Jiang, Tianping 1 ; Xu, Huiyong 1 ; Chen, Yun 5 ; Ma, Zhonghua 5 ; Qian, Guoliang 2 ;
作者机构： 1.Jiangsu Acad Agr Sci, State Key Lab Cultivat Base, Inst Plant Protect, Jiangsu Key Lab Food Qual & Safety,Minist Sci & T, Nanjing 210014, Jiangsu, Peoples R China
2.Nanjing Agr Univ, Coll Plant Protect, Nanjing 210095, Jiangsu, Peoples R China
3.Nanjing Agr Univ, Minist Educ, Key Lab Integrated Management Crop Dis & Pests, Nanjing 210095, Jiangsu, Peoples R China
4.Yangzhou Univ, Coll Hort & Plant Protect, Yangzhou 225009, Jiangsu, Peoples R China
5.Zhejiang Univ, State Key Lab Rice Biol, Inst Biotechnol, Hangzhou 310058, Zhejiang, Peoples R China
6.Jiangsu Univ, Inst Life Sci, Zhenjiang 212013, Jiangsu, Peoples R China
期刊名称：PLANT DISEASE （ 影响因子：4.438； 五年影响因子：4.7 ）
ISSN： 0191-2917
年卷期： 2019 年 103 卷 6 期
页码：
收录情况： SCI
摘要： Heat-stable antifungal factor (HSAF), which belongs to the polycyclic tetramate macrolactam family, was isolated from Lysobacter enzymogenes fermentations and exhibited inhibitory activities against a wide range of fungal pathogens. In this study, the antifungal activity of HSAF against Fusarium graminearum in vitro and in vivo was investigated. A total of 50% of mycelial growth of F. graminearum was suppressed with 4.1 mu g/ml of HSAF (EC50 value). HSAF treatment resulted in abnormal morphology of the hyphae, such as curling, apical swelling, and depolarized growth. Furthermore, HSAF adequately inhibited conidial germination and conidiation of F. graminearum with an inhibition rate of 100% when 1 and 6 mu g/ml of HSAF were applied, respectively. HSAF caused ultrastructural changes of F. graminearum, including cell wall thickening and plasmolysis. Moreover, the application of HSAF significantly controlled Fusarium head blight in wheat caused by F. graminearum in the field. Overall, these results indicate that HSAF has potential for development as a fungicide against F. graminearum.
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