Premium
Tea polyphenol is a potential antifungal agent for the control of obligate biotrophic fungus in plants
Author(s) -
Yang Yuheng,
Chen Yingjuan,
Chen Fajing,
Yu Yang,
Bi Chaowei
Publication year - 2017
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/jph.12591
Subject(s) - biology , obligate , fungus , polyphenol , botany , powdery mildew , urediniospore , germ tube , in vivo , antifungal , spore germination , germination , microbiology and biotechnology , horticulture , biochemistry , antioxidant
Tea polyphenol ( TP ) exhibits broad‐spectrum antimicrobial properties. In this study, the in vitro and in vivo antifungal activities of TP on Puccinia striiformis f.sp. tritici ( Pst ), which is an obligate biotrophic fungus that causes severe wheat stripe rust disease, were evaluated to investigate the control efficacy of TP . In vitro experiments showed that, at a concentration of 1.0 mg/ml, TP significantly suppressed urediniospore germination and caused the aberrant growth of germ tubes. The inhibition ratio reached 100% by increasing the TP concentration. In vivo experiments showed that TP reduced incidence rate and the uredia coverage rate in a dose‐ and application time‐dependent manner. TP treatment also induced the aberrant differentiation of Pst on wheat leaves. Results suggest that the ideal TP concentration range is 20–40 mg/ml, and TP may be a potential antifungal agent for the control of obligate biotrophic fungus in plants.