1 Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong 271018, P. R. China.
3 Key Laboratory of Pesticide Toxicology & Application Technique, Shandong Agricultural University, Tai'an, Shandong 271018, P. R. China.
Plant Dis. 2019 Jul;103(7):1613-1620. doi: 10.1094/PDIS-05-18-0729-RE. Epub 2019 Apr 17.
, which can cause Sclerotinia stem rot, is a prevalent plant pathogen. This study aims to evaluate the application potential of benzovindiflupyr, a new generation of succinate dehydrogenase inhibitor (SDHI), against . In our study, 181 isolates collected from different crops (including eggplant [ = 34], cucumber [ = 27], tomato [ = 29], pepper [ = 35], pumpkin [ = 32], and kidney bean [ = 25]) in China were used to establish baseline sensitivity to benzovindiflupyr. The frequency distribution of the 50% effective concentration (EC) values of benzovindiflupyr was a unimodal curve, with mean EC values of 0.0260 ± 0.011 μg/ml, and no significant differences in mean EC existed among the various crops ( > 0.99). Benzovindiflupyr can effectively inhibit mycelial growth, sclerotial production, sclerotial shape, and myceliogenic and carpogenic germination of the sclerotia of . In addition, benzovindiflupyr showed good systemic translocation in eggplant. Using benzovindiflupyr at 100 μg/ml yielded efficacies of 71.3 and 80.5% for transverse activity and cross-layer activity, respectively, which were higher than those of acropetal and basipetal treatments (43.6 and 44.7%, respectively). Greenhouse experiments were then carried out at two experimental sites for verification. Applying benzovindiflupyr at 200 g a.i. ha significantly reduced the disease incidence and severity of Sclerotinia stem rot. Overall, the results demonstrated that benzovindiflupyr is a potential alternative product to control Sclerotinia stem rot.
, 可引发菌核病，是一种普遍的植物病原体。本研究旨在评估新一代琥珀酸脱氢酶抑制剂（SDHI）苯并呋氟草醚对 的应用潜力。在本研究中，我们从中国不同作物（包括茄子[=34]、黄瓜[=27]、番茄[=29]、辣椒[=35]、南瓜[=32]和芸豆[=25]）中采集了 181 个分离株，用于建立苯并呋氟草醚的基础敏感性。苯并呋氟草醚的 50%有效浓度（EC）值的频率分布呈单峰曲线，平均 EC 值为 0.0260±0.011μg/ml，且各作物间平均 EC 值无显著差异（ > 0.99）。苯并呋氟草醚能有效抑制 的菌丝生长、菌核产生、菌核形态、菌丝分化和产孢萌发。此外，苯并呋氟草醚在茄子中具有良好的系统性转移。用 100μg/ml 的苯并呋氟草醚处理，横向和跨层活性的防治效果分别为 71.3%和 80.5%，均高于向顶和向基处理（分别为 43.6%和 44.7%）。然后在两个试验点进行温室试验进行验证。用 200 g a.i.ha 的苯并呋氟草醚处理能显著降低菌核病的发病率和严重度。总的来说，这些结果表明苯并呋氟草醚是一种控制菌核病的潜在替代产品。
