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Seed pretreatment with cloquintocet‐mexyl protects wheat seedlings from fomesafen injury by promoting photosynthesis and decreasing oxidative stress
Pest Management Science ( IF 3.8 ) Pub Date : 2025-01-14 , DOI: 10.1002/ps.8646
Dongzhi Li, Yilin Liu, Li Xu, Hao Yu, Lanfen Xie, Yunchao Kan, Runqiang Liu, Guangling Li

BACKGROUNDFomesafen is a selective herbicide widely used to control post‐emergent broad‐leaf weeds in soybean and peanut fields. Because of its persistent nature in soil, it can suppress subsequent crops, including wheat. There is limited information focusing on methods of protecting wheat from fomesafen injury by soil residue.RESULTSBioassay results showed slight variations in tolerance to fomesafen among 31 wheat cultivars. Soil‐applied biochar (200 g m−2) could alleviate fomesafen injury at 2 mg L−1, and partially alleviate fomesafen injury at 4 mg L−1. Seed soaking in safeners cloquintocet‐mexyl and mefenpyr‐diethyl was more effective in protecting seedlings from fomesafen injury at 4 mg L−1 compared with 1,8‐naphthalic anhydride, fenclorim or dichlormid. Indoor tests suggested that the combined application of biochar and cloquintocet‐mexyl or mefenpyr‐diethyl had a synergistic alleviating effect on wheat injury caused by fomesafen, which was further confirmed in a field trial. Wheat seeds treated with cloquintocet‐mexyl increased expression of the fomesafen target protoporphyrinogen IX oxidase and light‐harvesting chlorophyll a/b binding protein, leading to an increase in chlorophyll content and a decrease in oxidative stress of wheat exposed to fomesafen. Cloquintocet‐mexyl treatment had no influence on the expression of P450 genes, toxic transport genes, most glutathione S‐transferase (GST) genes, the enzyme activity of P450 or GSTs, and the metabolism rate of fomesafen.CONCLUSIONThese results suggested that cloquintocet‐mexyl acted by increasing photosynthesis and decreasing oxidative stress to alleviate injury to wheat exposed to fomesafen stress, showing no influence on fomesafen metabolism in wheat. This study provided valuable information for fomesafen injury management in wheat. © 2025 Society of Chemical Industry.

中文翻译:


用 cloquintocet-mexyl 进行种子预处理通过促进光合作用和减少氧化应激来保护小麦幼苗免受 fomesafen 的伤害



背景福梅芬是一种选择性除草剂,广泛用于控制大豆和花生田的苗后阔叶杂草。由于它在土壤中的持久性,它可以抑制包括小麦在内的后续作物。关于保护小麦免受土壤残留物对 fomesafen 伤害的方法的信息有限。结果生物检测结果显示,31 个小麦品种对 fomesafen 的耐受性存在细微差异。土壤施用生物炭 (200 g m -2) 可以在 2 mg L-1 时减轻 fomesafen 损伤,在 4 mg L-1 时部分减轻 fomesafen 损伤。与 1,8-萘酐、芬氯林或氯纶相比,在 4 mg L-1 的安全剂氯喹托塞-甲基氧乙基和甲芬吡啶-二乙基中浸泡种子在保护幼苗免受氟氧氟硫净损伤方面更有效。室内试验表明,生物炭与氯喹托切-甲氧基或甲苯吡啶-二乙基的联合应用对甲美沙净引起的小麦伤害具有协同缓解作用,这在田间试验中得到了进一步证实。用氯喹喹烯-甲基处理的小麦种子增加了 fomesafen 靶标原卟啉原 IX 氧化酶和光捕获叶绿素 a/b 结合蛋白的表达,导致暴露于 fomesafen 的小麦叶绿素含量增加和氧化应激降低。氯喹托塞-梅西处理对 P450 基因表达、毒性转运基因、大多数谷胱甘肽 S-转移酶 (GST) 基因、P450 或 GSTs 的酶活性以及 fomesafen 的代谢速率没有影响。结论结果表明,氯喹托塞-甲基氧基通过增加光合作用和减少氧化应激来减轻暴露于氟磺草胺胁迫下的小麦的损伤,对小麦氟草胺代谢没有影响。 本研究为小麦 fomesafen 损伤管理提供了有价值的信息。© 2025 化工学会.
更新日期:2025-01-14
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