鉴定一株新型菌株——链霉菌 blastmyceticus JZB130180，并评估其对桃褐腐病菌的生防效果。
Identification of a novel strain, Streptomyces blastmyceticus JZB130180, and evaluation of its biocontrol efficacy against Monilinia fructicola.
机构信息
Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North China, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
出版信息
J Zhejiang Univ Sci B. 2019;20(1):84-94. doi: 10.1631/jzus.B1700609.
Peach brown rot, caused by Monilinia fructicola, is one of the most serious peach diseases. A strain belonging to the Actinomycetales, named Streptomyces blastmyceticus JZB130180, was found to have a strong inhibitory effect on M. fructicola in confrontation culture. Following the inoculation of peaches in vitro, it was revealed that the fermentation broth of S. blastmyceticus JZB130180 had a significant inhibitory effect on disease development by M. fructicola. The fermentation broth of S. blastmyceticus JZB130180 had an EC (concentration for 50% of maximal effect) of 38.3 µg/mL against M. fructicola, as determined in an indoor toxicity test. Analysis of the physicochemical properties of the fermentation broth revealed that it was tolerant of acid and alkaline conditions, temperature, and ultraviolet radiation. In addition, chitinase, cellulase, and protease were also found to be secreted by the strain. The results of this study suggest that S. blastmyceticus JZB130180 may be used for the biocontrol of peach brown rot.
桃褐腐病由桃褐腐病菌（Monilinia fructicola）引起，是桃树最严重的病害之一。从土壤中分离到的一株放线菌，命名为链霉菌（Streptomyces blastmyceticus）JZB130180，对桃褐腐病菌具有较强的拮抗作用。通过室内毒力测定，该放线菌发酵液对桃褐腐病菌的抑制中浓度（EC50）为 38.3 µg/mL。发酵液对酸、碱、温度和紫外线具有较强的稳定性。此外，该菌株还能分泌几丁质酶、纤维素酶和蛋白酶。该研究结果表明，链霉菌 JZB130180 有望用于桃褐腐病的生物防治。
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