Seed Coating with Triflumezopyrim Induces the Rice Plant's Defense and Inhibits the Brown Planthopper's Feeding Behavior

文献类型： 外文期刊

第一作者： Xi, Chanyuan

作者： Xi, Chanyuan;Ahmad, Sheraz;Zhang, Jieyu;Chen, Yu;Zhu, Haowen;Ge, Linquan;Yu, Julong;Zhang, Guo;Shu, Zhaolin;Yu, Xiangyang

作者机构：

关键词： trifluemzopyrim; Nilaparvata lugens; feeding behavior; rice resistance

期刊名称：AGRONOMY-BASEL （ 影响因子：3.949； 五年影响因子：4.117 ）

ISSN：

年卷期： 2022 年 12 卷 5 期

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收录情况： SCI

摘要： Triflumezopyrim (TFM), a novel mesoionic insecticide, has been effective in controlling sucking insect pests such as the brown planthopper (BPH). However, the mechanism of TFM as a seed coating agent in paddy fields remains unclear. Here, we investigate the seed germination rates (>80%) and seedling emergence rates (>85%) of rice treated with TFM at 0, 22.5, 45.0, 67.5, and 90.0 g a.i. ha(-1) with no significant effect on germination rates. In addition, the low TFM residue concentration (0.04 mg. kg(-1)) is maintained in the rice stem. Meanwhile, the TFM seeds' treatments lead to increased oxalic acid, flavonoids, total phenol, callose contents, and elevated C/N ratio in rice plants at 60 and 90 days after sowing (DAS). The electrical penetration graph (EPG) results indicate that TFM as a seed coating treatment prolongs the non-probing period and inhibits phloem sap ingestion at 90 DAS. Furthermore, the mechanically transplanted rice treated with TFM provides long-term prevention against the BPH infestation. This study demonstrates that seeds treated with TFM play a vital role in controlling the BPH population up to >90%. These results provide a novel valuable control strategy for BPH in the rice fields.

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