Pathogen identification of Paris polyphylla var.yunnanensis(Franch)Hand.-Mazz gray spot disease in Yunnan Province
Paris polyphylla var.yunnanensis(Franch)Hand.-Mazz is an important cash crop in Yunnan ethnic minority areas.In 2022,we discovered a new type of leaf spot disease in the Lijiang planting area,which can damage the entire growth period of the crop.The typical symptoms in the field were spots(diameter 2.4-6.7 mm)on the surface of the disease leaves,the leave become brown and necrosis in later stage thus resulting in serious economic losses.We isolated pathogenic bacteria by monosporophyte isolation,and identified by morphological observation and polygenic phylogenetic analysis,and its pathogenicity was verified using Koch's rule.The final identification results showed that the pathogen was a new species of Cercospora and was named Cercospora polyphylla x.he & P.W.Yang,sp.11 according to the binomial nomenclature.This is the first report of Paris polyphylla var.yunnanensis(Franch)Hand.-Mazz leaf disease caused by C.polyphylla in China,and this study will provide a theoretical basis for the epidemic and comprehensive prevention and control of the disease.
Paris polyphylla var.yunnanensis(Franch)Hand.-MazzGreyspotdiseaseCercospora polyphyllaphylogenetic analysis
廖永琴、王楠、矣小鹏、施竹凤、申云鑫、莫艳芳、杨童雨、何永宏、杨佩文
展开 >
云南农业大学植物保护学院 昆明 650000
云南省农业科学院农业环境资源研究所 昆明 650000
Paris polyphylla var.yunnanensis(Franch)Hand.-Mazz Greyspotdisease Cercospora polyphylla phylogenetic analysis
万方数据
维普
