Suppression of Grape White Rot Caused by Coniella vitis Using the Potential Biocontrol Agent Bacillus velezensis GSBZ09
文献类型： 外文期刊
作者： Yin, Xiangtian 1 ; Li, Tinggang 1 ; Jiang, Xilong 1 ; Tang, Xiaoning 1 ; Zhang, Jiakui 1 ; Yuan, Lifang 1 ; Wei, Yanfeng 1 ;
作者机构： 1.Shandong Acad Agr Sci, Shandong Acad Grape, Jinan 250100, Peoples R China
关键词： biocontrol agent; Bacillus velezensis; antagonistic activity; grape white rot; Coniella vitis
期刊名称：PATHOGENS （ 影响因子：4.531； 五年影响因子：4.58 ）
ISSN：
年卷期： 2022 年 11 卷 2 期
页码：
收录情况： SCI
摘要： Grape white rot caused by Coniella vitis is prevalent in almost all grapevines worldwide and results in a yield loss of 10-20% annually. Bacillus velezensis is a reputable plant growth-promoting bacterial. Strain GSBZ09 was isolated from grapevine cv. Red Globe (Vitis vinifera) and identified as B. velezensis according to morphological, physiological, biochemical characteristics and a multilocus gene sequence analysis (MLSA) based on six housekeeping genes (16S rRNA, gyrB, rpoD, atpD, rho and pgk). B. velezensis GSBZ09 was screened for antifungal activity against C. vitis under in vitro and in vivo conditions. GSBZ09 presented broad spectrum antifungal activity and produced many extracellular enzymes that remarkably inhibited the mycelial growth and spore germination of C. vitis. Furthermore, GSBZ09 had a high capacity for indole-3-acetic acid (IAA) production, siderophore production, and mineral phosphate solubilization. Pot experiments showed that the application of GSBZ09 significantly decreased the disease index of the grape white rot, directly promoted the growth of grapes, and upregulated defense-related enzymes. Overall, the features of B. velezensis GSBZ09 make it a potential strain for application as a biological control agent against C. vitis.
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