Microclimatic parameters affect Cladosporium rot development and berry quality in table grapes  

作　　者：Dhanasekaran Solairaj Ngolong Ngea Guillaume Legrand Qiya Yang Jizhan Liu Hongyin Zhang 

机构地区：[1]School of Food and Biological Engineering,Jiangsu University,Zhenjiang 212013,Jiangsu,China [2]Key Laboratory of Modern Agricultural Equipment and Technology,Ministry of Education,Jiangsu University,Zhenjiang 212013,Jiangsu,China

出　　处：《Horticultural Plant Journal》2022年第2期171-183,共13页园艺学报（英文版）

基　　金：the financial support received from National Natural Science Foundation of China (Grant Nos. 31950410556, 31901743, and 31971795);a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (Grant No. PAPD-2018-87)。

摘　　要：Cladosporium cladosporioides is an emerging pathogenic fungus that causes Cladosporium rot in postharvest table grapes(Vitis vinifera). However,studies investigating the infection process of C. cladosporioides are lacking. Therefore, this study aimed to elucidate the infection process by investigating the influence of microclimatic parameters(temperature, wetness and fungal age) in C. cladosporioides pathogenesis, activities of grape defense-related enzymes and grape quality during the infection. C. cladosporioides effectively infects grapes by developing distinct colonies on the artificial wounds and berry surfaces, completing its life cycle within 48 h. The C. cladosporioides disease incidence optimally occurred at 20 ℃ and 25 ℃. Wetness played an influential role in the infectivity of C. cladosporioides and 7-day-old C. cladosporioides resulted in the most serious disease incidence of table grapes. As a result of infection, the quality of grapes was affected, including berry weight, p H, titratable acidity(TA), total soluble solids(TSS), and ascorbic acid level. This infection also induced defense-related enzymes, including polyphenoloxidase(PPO), peroxidase(POD), phenylalanine ammonialyase(PAL), and catalase(CAT), at certain times. The findings of this study demonstrated that Cladosporium rot development depended on the microclimatic parameters of grapes, significantly affected the grape quality and induced grape's defense-related enzymes.

关 键 词：Cladosporium cladosporioides Table grape PATHOGENESIS INFECTION 

分 类 号：S436.631.1[农业科学—农业昆虫与害虫防治]