文献类型： 外文期刊
作者： Chen, Xianyan 1 ; Ma, Yonglin 1 ; Huang, Mengge 1 ; Li, Weisheng 1 ; Zeng, Dongqiang 2 ; Li, Jingbo 3 ; Wang, Yanhui 1 ;
作者机构： 1.Guangxi Acad Agr Sci, Plant Protect Res Inst, Guangxi Key Lab Biol Crop Dis & Insect Pests, Minist Agr & Rural Affairs,Key Lab Green Prevent, Nanning 530007, Peoples R China
2.Guangxi Univ, Inst Pesticide & Environm Toxicol, Nanning 530004, Peoples R China
3.Guangxi Vocat Univ Agr, Nanning 530007, Peoples R China
关键词： Target-site mutations; Auxin herbicide; ALS-inhibiting herbicides; Cytochrome P450 enzyme; Cyperus difformis
期刊名称：PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY （ 影响因子：4.7； 五年影响因子：4.7 ）
ISSN： 0048-3575
年卷期： 2023 年 195 卷
页码：
收录情况： SCI
摘要： Herbicide resistance is rapidly emerging in Cyperus difformis in rice fields across China. The response of a C. difformis population GX-35 was tested against five acetolactate synthase (ALS)-inhibiting herbicides, auxin herbicide MCPA and photosynthesis II (PSII)-inhibitor bentazone. Population GX-35 evolved multiple resistance to ALS-inhibiting herbicides (penoxsulam, bispyribac-sodium, pyrazosulfuron-ethyl, halosulfuron-methly and imazapic) and auxin herbicide MCPA, with resistance levels of 140-, 1253-, 578-, 18-, 13-, and 21-fold, respectively, compared to the susceptible population. In this population, ALS gene expression was similar to that of the susceptible population. However, an Asp376Glu mutation in ALS gene was observed, leading to reduced inhibition of in-vitro ALS activities by five ALS-inhibiting herbicides. Furthermore, CYP71D8, CYP77A3, CYP78A5 and three ABC transporter genes (cluster-14412.23067, cluster-14412.25321, and cluster14412.24716) over-expressed in absence of penoxsulam. On the other hand, an UGT73C1 and an ABC transporter (cluster-14412.25038) were induced by penoxsulam. Additionally, both over-expression and induction were observed for CYP74, CYP71A1, UGT88A1 and an ABC transporter (cluster-14412.21723). The GX-35 population has indeed evolved multiple herbicide resistance in China. Therefore, a diverse range of weed control tactics should be implemented in rice field.
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