Sensitivity to Boscalid and Trifloxystrobin and Fitness of Corynespora cassiicola Associated with CcSdh & CcCytb in Cucumber

IF 5.7 1区农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY

Journal of Agricultural and Food Chemistry Pub Date : 2025-03-10 DOI:10.1021/acs.jafc.4c12431

Guangxue Zhu, Yuanyuan Yue, Rongjia Zhou, Bingxue Sun, Xuewen Xie, Ali Chai, Lei Li, Tengfei Fan, Baoju Li, Yanxia Shi

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引用次数: 0

Abstract

The extensive use of succinate dehydrogenase inhibitors (SDHIs) and quinone outside inhibitors (QoIs) has led to the development of resistance in Corynespora cassiicola, which causes corynespora leaf spot (CLS) in cucumber. In this study, the sensitivity and the resistance phenotypes to SDHIs and QoIs were monitored, and the fitness of C. cassiicola carrying CcSdh & CcCytb mutations was measured. The average 50% effective suppressive concentration (EC₅₀) values of C. cassiicola to boscalid from 2019 to 2021 ranged from 6.65 to 24.16 μg/mL, while the average EC₅₀ values of C. cassiicola to trifloxystrobin from 2007 to 2021 ranged from 105.11 to 462.02 μg/mL. Ten fungicide resistance phenotypes and 19 resistance genotypes were found. The D-D95E&Cytb-G143A and B–H278L&Cytb-G143A mutants presented increased fitness, while the B–H278Y&Cytb-G143A mutant showed significant fitness costs, and the other mutants presented no or slight fitness costs. These findings provide a basis for the formulation of resistance management strategies of CLS.

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来源期刊

Journal of Agricultural and Food Chemistry 农林科学-农业综合

CiteScore

9.90

自引率

8.20%

发文量

1375

审稿时长

2.3 months

期刊介绍： The Journal of Agricultural and Food Chemistry publishes high-quality, cutting edge original research representing complete studies and research advances dealing with the chemistry and biochemistry of agriculture and food. The Journal also encourages papers with chemistry and/or biochemistry as a major component combined with biological/sensory/nutritional/toxicological evaluation related to agriculture and/or food.