Phylogenetic Analysis and Fungicide Baseline Sensitivities of Monilia mumecola in China
Phylogenetic Analysis and Fungicide Baseline Sensitivities of Monilia mumecola in China
复制标题
中国念珠菌系统发育分析及杀菌剂基线敏感性
DOI：
10.1094/pdis-11-18-1953-re
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发表时间：
2019
期刊：
影响因子：
4.5
通讯作者：
Luo C X
中科院分区：
文献类型：
--
作者：
Yin L F;Du S F;Chaisiri C;Cheewangkoon R;Luo C X
桃褐腐病是我国桃褐腐病的主要病原之一。本研究以不同地区和不同寄主的木霉分离株为材料，分析了木霉的遗传多样性，并测定了木霉对4种常用杀菌剂多菌灵、戊唑醇、嘧菌酯和啶酰菌胺的敏感性。结果表明，不同地区的分离株有分离的趋势。有趣的是，来自不同宿主的分离物（例如，桃和杏）在同一地点的分离株一般聚在一起，表明在同一地区的分离株可能感染不同的寄主。对93株菌的药敏试验结果表明，多菌灵、戊唑醇、嘧菌酯和啶酰菌胺的50%菌丝生长抑制值的平均有效浓度分别为0.103、0.034、0.325和0.419 μg/ml。供试菌株对4种杀菌剂的敏感性分布呈连续单峰曲线，表明抗性没有发生质的变化。不同寄主、不同产地的菌株对供试药剂的敏感性差异不显著。
Monilia mumecolais one of the causal agents of peach brown rot in China. In this study,M.mumecolaisolates from different locations and hosts were used to analyze the genetic diversity and to assay the sensitivity to four generally used fungicides: carbendazim, tebuconazole, azoxystrobin, and boscalid. Results showed that isolates from different locations tended to be separated. Interestingly, isolates from different hosts (e.g., peach and apricot) at the same locations generally clustered together, indicating that theM.mumecolaisolates may infect different hosts in the same areas. The fungicide sensitivity assay of 93M.mumecolaisolates showed that the average effective concentration for 50% mycelial growth inhibition values for carbendazim, tebuconazole, azoxystrobin, and boscalid were 0.103, 0.034, 0.325, and 0.419 µg/ml, respectively. The sensitivity distributions of the tested isolates to the four fungicides showed continuous unimodal curves, indicating no qualitative shift of resistance. No significant difference of sensitivity to tested fungicides was observed among isolates from either different locations or different hosts.