Antibacterial mechanism of Biochanin A and its efficacy for the control of Xanthomonas axonopodis pv. glycines in soybean
文献类型： 外文期刊
作者： Hu, Kai-Xuan 1 ; Shi, Xin-Chi 1 ; Xu, Dong 1 ; Laborda, Pablo 2 ; Wu, Gui-Chun 3 ; Liu, Feng-Quan 3 ; Laborda, Pedro 1 ;
作者机构： 1.Nantong Univ, Sch Life Sci, Nantong 226019, Peoples R China
2.CSIC, Ctr Nacl Biotecnol, Madrid, Spain
3.Jiangsu Acad Agr Sci, Inst Plant Protect, Jiangsu Key Lab Food Qual & Safety, State Key Lab Cultivat Base,Minist Sci & Technol, Nanjing 210014, Peoples R China
关键词： Biochanin A; soybean; Xanthomonas axonopodis pv; glycines; bacterial pustule disease; antibacterial isoflavonoid
期刊名称：PEST MANAGEMENT SCIENCE （ 影响因子：4.845； 五年影响因子：4.674 ）
ISSN： 1526-498X
年卷期： 2021 年 77 卷 4 期
页码：
收录情况： SCI
摘要： BACKGROUND Xanthomonas axonopodis pv. glycines (Xag) is a hazardous pathogen able to cause bacterial pustule disease in soybean, reducing crop yield and quality. Although flavonoids rutin and genistein are known to play an important role in soybean defence, soybean is only able to produce Biochanin A in low concentration. RESULTS In this work, Biochanin A was found to produce higher antibacterial activity against Xag in comparison with genistein (minimum inhibitory concentration < 100 mu g/mL). Biochanin A was able to inhibit DNA synthesis and flagella formation in Xag, and altered the composition of the bacterial membrane. These effects reduced swimming motility, extracellular protease activity and biofilm formation. Further, Biochanin A was tested for the control of Xag in soybean leaves, showing similar, or even higher, inhibitory ability in comparison with some products commonly used for the control of this pathogen. CONCLUSIONS The antibacterial properties of Biochanin A against Xag have been studied for the first time, revealing new insights on the potential applications of this isoflavonoid for the management of bacterial pustule disease.
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