您好，欢迎访问河南省农业科学院 机构知识库！
河南省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Cell-wall-degrading enzymes produced by sesame leaf spot pathogen Corynespora cassiicola

文献类型： 外文期刊

作者： Jia, Min 1 ; Liu, Xintao 1 ; Zhao, Hui 1 ; Ni, Yunxia 1 ; Liu, Hongyan 1 ; Tian, Baoming 2 ;

作者机构： 1.Zhengzhou Univ, Henan Acad Agr Sci, Inst Plant Protect, Postgrad T&R Base, Zhengzhou 450002, Peoples R China

2.Zhengzhou Univ, Sch Agr Sci, Zhengzhou, Peoples R China

关键词： cell‐ wall‐ degrading enzymes; Corynespora leaf spot; sesame

期刊名称：JOURNAL OF PHYTOPATHOLOGY （ 影响因子：1.789； 五年影响因子：1.574 ）

ISSN： 0931-1785

年卷期： 2021 年 169 卷 3 期

页码：

收录情况： SCI

摘要： Corynespora leaf spot (CLS) is one of the most important diseases in sesame and is caused by a fungal pathogen, Corynespora cassiicola. In this study, we investigated the role of cell-wall-degrading enzymes (CWDEs) in the process of pathogen infection and aimed to identify the enzyme that exerts positive effect. Corynespora cassiicola was inoculated in liquid culture and in sesame leaf. At 7 days postinoculation, CWDEs including polygalacturonase (PG), cellulase (CL), neutral xylanase (NEX) and laccase (LC) were detected in the supernatant and leaf extracts inoculated with Corynespora cassiicola. The result showed that the activities of LC and NEX were higher in liquid culture, while the activities of CL and PG were lower. In the sesame leaf infected by Corynespora cassiicola, the activity of NEX was the highest, those of CL and LC were the second highest and that of PG was the weakest, which indicated that NEX was the key enzyme in the process of sesame infection by Corynespora cassiicola. Secondly, the activities of the CWDEs secreted by Corynespora cassiicola were disparate in different sesame varieties. CWDEs activities of cultivar Jz were generally higher than cultivar Hn, and the activity change curve of Jz was also steeper than that of Hn. This indicates that the resistance mechanism of Hn may inhibit the activities of CWDEs and that the appearance and expansion of leaf necrosis spot is related to the comprehensive accumulation and action of various CWDEs. This is the first report investigating the association between CWDEs and pathogenesis of Corynespora cassiicola, causing Corynespora leaf spot in sesame.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：河南省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台