Bacillus amyloliquefaciens GB1 can effectively control apple valsa canker
文献类型: 外文期刊
第一作者: Zhang, Jun-xiang
作者: Zhang, Jun-xiang;Gu, Yan-bing;Chi, Fu-mei;Ji, Zhi-rui;Wu, Jian-yuan;Dong, Qing-long;Zhou, Zong-shan
作者机构:
关键词: Valsa;Green fluorescent protein (GFP);Biological control;Bacillus;Cytospora
期刊名称:BIOLOGICAL CONTROL ( 影响因子:3.687; 五年影响因子:3.962 )
ISSN:
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收录情况: SCI
摘要: Apple valsa canker (AVC), caused by Valsa mali, is one of the most serious diseases of apple trees in eastern Asia, and the most important factor limiting apple production in China. This disease is difficult to control by chemical and agricultural measures, thus biocontrol may constitute a desirable alternative strategy. A Bacillus amyloliquefaciens strain denoted GB1 isolated from ageing cucumber stems, exhibited a strong antagonistic activity against V. mali, inhibiting significantly the germination of conidia and the growth of hyphae. GB1 conidial suspensions (above 10(6) CFU/ml) applied prior to wound inoculation of apple twigs with V. mali resulted in total inhibition of infection. Strain GB1 colonized xylem and phloem tissues surrounding the wounds made on apple twigs and formed biofilms over them. Results indicate that B. amyloliquefaciens GB1 may be a promising agent for the biocontrol of AVC, and provide new insights into the ability of B. amyloliquefaciens to colonize apple trees.(C) 2015 Elsevier Inc. All rights reserved.
分类号: S476
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