Mechanism of Fenoxaprop-&ITP&IT-ethyl Resistance in Italian Ryegrass (&ITLolium&IT &ITperenne&IT ssp &ITmultiflorum&IT) from China
文献类型: 外文期刊
第一作者: Zhang, Pei
作者: Zhang, Pei;Wu, Han;Gao, Yuan;Zhang, Wei;Dong, Liyao;Xu, Hongle
作者机构:
关键词: ACCase;Cyt P450;herbicides;Malathion;mutation;piperonyl butoxide (PBO);resistance
期刊名称:WEED SCIENCE ( 影响因子:2.713; 五年影响因子:2.868 )
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收录情况: SCI
摘要: Italian ryegrass has invaded wheat fields in China and is becoming a predominant, troublesome weed. Fenoxaprop-P-ethyl has been widely used for weed control on Chinese farms since the 1990s. However, overuse has led to fenoxaprop-P-ethyl resistance in Italian ryegrass in Chinese wheat fields. In this study, we identified a putative fenoxaprop-P-ethyl-resistant population of Italian ryegrass, HZYC-6, from Henan province, China. Mutations involving Asp-2078-Gly and Ile-1781-Leu substitutions were identified in the carboxyl-transferase domain of acetyl-coenzyme A carboxylase in this population, and these mutations are the likely cause of the target site-based resistance to fenoxaprop-P-ethyl. In addition, we identified cytochrome P450-mediated metabolism of herbicides (non-target site based resistance) in the HZYC-6 population, indicating that multiple mechanisms of resistance may be segregating in this population. Furthermore, HZYC-6 was also highly resistant to haloxyfop-R-methyl and quizalofop-P-ethyl, moderately resistant to clodinafop-propargyl and sethoxydim, and had low resistance to clethodim and pinoxaden.
分类号: S451
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