The evolution of resistance to herbicides in weeds has become a great challenge for global agricultural production. Weeds have evolved resistance to herbicides through many different physiological mechanisms. Some weed species are known to secrete herbicide molecules from roots into the rhizosphere upon being treated. However, root exudation of herbicides as a mechanism of resistance has only recently been identified in two weed species. Root exudation pathways have been investigated in Arabidopsis, and this work suggested that ATP‐binding cassette (ABC) and multidrug and toxic compound extrusion (MATE) transporters play a role in the secretion of primary and secondary plant products from roots. We hypothesize that the mechanisms involved in root exudation of herbicides that result in resistance are mediated by overactive or overexpressed transporters, probably similar to those found for the exudation of primary and secondary compounds from roots. Elucidating the molecular and physiological basis of root exudation in herbicide‐resistant weeds would improve our understanding of the pathways involved in herbicide root secretion mediated by transporters in plants. © 2020 Society of Chemical Industry

中文翻译：

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观点：除草剂的根系渗出是杂草抗除草剂的一种新模式。

杂草对除草剂的抗性演变已成为全球农业生产的巨大挑战。杂草已经通过许多不同的生理机制进化出了对除草剂的抗性。已知一些杂草物种在经过处理后会从根部分泌到根际内的除草剂分子。但是，直到最近才在两个杂草物种中发现了根除除草剂作为抗药性的机制。已在拟南芥中研究了根系分泌途径，这项工作表明，ATP结合盒（ABC）以及多药和有毒化合物挤出（MATE）转运蛋白在根部分泌初级和次级植物产品中发挥了作用。我们假设，导致抗性的除草剂根系渗出涉及的机制是由过度活跃或过表达的转运蛋白介导的，可能与从根系渗出一级和二级化合物中发现的类似。阐明抗除草剂杂草中根系渗出的分子和生理基础将增进我们对植物转运蛋白介导的除草剂根系分泌途径的了解。©2020化学工业协会