Interactions between prosulfocarb and trifluralin metabolism in annual ryegrass (Lolium rigidum)

IF 3.8 1区农林科学 Q1 AGRONOMY

Pest Management Science Pub Date : 2024-10-03 DOI:10.1002/ps.8458

Danica E Goggin, Gregory R Cawthray, Roberto Busi

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引用次数: 0

Abstract

BACKGROUND

Cross-resistance between pre-emergence herbicides is developing in Australian populations of annual ryegrass (Lolium rigidum Gaud.). A previous study has reported that selection with prosulfocarb (a pro-herbicide requiring bioactivation to its phytotoxic sulfoxide) can decrease metabolic resistance to trifluralin. Metabolism of prosulfocarb and trifluralin was investigated in L. rigidum populations with different levels of resistance to prosulfocarb, trifluralin and also pyroxasulfone, which is detoxified by glutathione (GSH) conjugation.

RESULTS

Coleoptiles and radicles of herbicide-treated seedlings responded differently to the same herbicide. Radicles had a lower capacity for bioactivation of prosulfocarb, and this was correlated with a lower ability to metabolise trifluralin within and among populations. Coleoptile resistance to prosulfocarb sulfoxide was negatively correlated with abundance of a major polar metabolite. There was no evidence of GSH conjugation with the sulfoxide, making any potential links between prosulfocarb and pyroxasulfone resistance less obvious.

CONCLUSIONS

Activation and metabolism of prosulfocarb in L. rigidum is complex and differentially regulated in different tissues. Selection with prosulfocarb may ameliorate trifluralin metabolism in the radicles, but the relationship between prosulfocarb and pyroxasulfone resistance is not GSH-mediated. When applying pre-emergence herbicides, care should be taken with the composition of mixtures and rotations to avoid selection of cross-resistance between pyroxasulfone and prosulfocarb. © 2024 The Author(s). Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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查看原文本刊更多论文

一年生黑麦草（Lolium rigidum）中丙硫克百威和三氟拉林代谢之间的相互作用。

背景：在澳大利亚的一年生黑麦草（Lolium rigidum Gaud.）种群中，出现了芽前除草剂之间的交叉抗性。之前的一项研究报告称，选择丙硫克百威（一种需要生物活化为植物毒性亚砜的原除草剂）可降低对三氟草胺的代谢抗性。研究人员在对丙硫克百威、三氟唑草胺以及通过谷胱甘肽（GSH）共轭作用解毒的吡唑醚菌酯具有不同抗性的僵叶蓟马种群中调查了丙硫克百威和三氟唑草胺的代谢情况：结果：除草剂处理过的秧苗的胚珠和胚根对相同除草剂的反应不同。胚根对丙硫克百威的生物活化能力较低，这与种群内和种群间代谢三氟拉林的能力较低有关。胚芽鞘对丙硫克百威亚砜的抗性与一种主要极性代谢物的丰度呈负相关。没有证据表明 GSH 与亚砜发生了共轭作用，因此丙硫克百威和吡唑醚菌酯抗性之间的潜在联系并不明显：结论：在硬毛鳞茎中，丙硫克百威的活化和代谢非常复杂，在不同组织中的调节方式也不同。使用丙硫克百威可能会改善胚根中三氟草胺的代谢，但丙硫克百威与吡唑醚菌酯抗性之间的关系并非由 GSH 介导。在施用萌芽前除草剂时，应注意混合物和轮作的组成，以避免吡嘧磺隆和丙磺隆之间产生交叉抗性。病虫害管理科学》由约翰威利父子有限公司代表化学工业协会出版。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Pest Management Science 农林科学-昆虫学

CiteScore

7.90

自引率

9.80%

发文量

553

审稿时长

4.8 months

期刊介绍： Pest Management Science is the international journal of research and development in crop protection and pest control. Since its launch in 1970, the journal has become the premier forum for papers on the discovery, application, and impact on the environment of products and strategies designed for pest management. Published for SCI by John Wiley & Sons Ltd.