中国马铃薯疮痂病菌生物学特性分析

Biological Characteristics Analysis of the Pathogens Caused Potato Common Scab in China

【目的】对来自中国不同地区的30株马铃薯疮痂病菌进行了生物学特性分析。【方法】通过扫描电镜观察菌株的形态学特征,同时测试菌株的生理生化及生长限制因子等指标,利用SPSS软件将结果与11株链霉菌标准菌株进行聚类分析。【结果】30个测试菌株中包括Streptomyces scabies种群10株,S.bobili种群7株,S.turgidiscabies种群1株,S.galilaeus种群6株,S.diastatochromogenes种群2株,S.setonii种群1株,S.enissocaesilis种群3株。【结论】由此可见,中国马铃薯疮痂病菌的组成具有明显多样性,其中S.galilaeus,S.bobili和S.enissocaesilis等种群为新发现的马铃薯疮痂病病原菌。

【Objective】 Thirty potato common scab-causing strains isolated from different areas in China were analyzed according to their biological characteristics.【Method】 The morphological properties of the strains were observed by scanning electron microscope.The biochemical characteristics and the growth restricting factors were tested.The clustering analysis was carried out by SPSS software based on the test results and the data of the 11 standard Streptomyces strains.【Result】 Among the 30 scab-causing strains,10 strains belong to S.scabies group,7 to S.bobili group,1 to S.turgidiscabies group,6 to S.galilaeus group,2 to S.diastatochromogenes group,1 to S.setonii group,and 3 to S.enissocaesilis group.【Conclusion】 The results revealed the diversity of potato common scab pathogens in China.Moreover,S.galilaeus,S.bobili and S.enissocaesilis groups were found to be novel pathogens causing potato common scab.