Assessment of sensitivity and virulence fitness costs of the AvrPik alleles from Magnaporthe oryzae to isoprothiolane
文献类型： 外文期刊
作者： Wu, W. H. 1 ; Wang, L. 2 ; Zhang, S. 3 ; Liang, Y. Q. 1 ; Zheng, X. L. 1 ; Yi, K. X. 1 ; He, C. P. 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Hainan Key Lab Monitoring & Control Trop Agr Pest, Haikou, Hainan, Peoples R China
2.South China Agr Univ, Guangdong Prov Key Lab Microbe Signals & Crop Dis, Guangzhou, Guangdong, Peoples R China
3.South China Agr Univ, Guangdong Prov Key Lab Microbe Signals & Crop Dis, Guangzhou, Guangd
关键词： AvrPik alleles;Fitness costs;Isoprothiolane;Magnaporthe oryzae
期刊名称：GENETICS AND MOLECULAR RESEARCH （ 影响因子：0.764； 五年影响因子：0.912 ）
ISSN： 1676-5680
年卷期： 2014 年 13 卷 4 期
页码：
收录情况： SCI
摘要： The in vitro sensitivity of AvrPik allele isolates of Magnaporthe oryzae to isoprothiolane was examined and the virulence fitness costs of AvrPik allele isolates to isoprothiolane were assessed. Isoprothiolane was found to suppress the radial growth of AvrPik allele isolates at all concentrations (1, 5, 10, 15, and 20 mu g/mL). Generally, a higher isoprothiolane concentration has a stronger inhibitory effect on mycelial growth in AvrPik allele isolates at 6 and 10 days after inoculation. The inhibitory effect of isoprothiolane also increased with treatment time. To determine whether a correlation existed between the in vitro sensitivity of AvrPik allele isolates and virulence, the half-maximal inhibitor concentration and 75% of the maximum inhibitor concentration were calculated for each mutation isolate and wild-type isolate. Based on these values and virulence, no significant correlation between the susceptibility of AvrPik allele isolates and virulence was detected. In summary, no fitness costs were associated with sensitivity of blast isolates carrying specific AvrPik alleles to different virulence.
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