Molecular basis of multiple resistance to herbicides inhibiting acetyl-CoA carboxylase and acetolactate synthase in American sloughgrass (Beckmannia syzigachne) from China
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作者:
Pan, Lang
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Nanjing Agr Univ, Coll Plant Protect, Nanjing 210095, Jiangsu, Peoples R China
Nanjing Agr Univ, Minist Agr, Key Lab Integrated Pest Management Crops Eastern, Nanjing 210095, Jiangsu, Peoples R ChinaNanjing Agr Univ, Coll Plant Protect, Nanjing 210095, Jiangsu, Peoples R China
Pan, Lang
[1
,2
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Gao, Haitao
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Nanjing Agr Univ, Coll Plant Protect, Nanjing 210095, Jiangsu, Peoples R China
Nanjing Agr Univ, Minist Agr, Key Lab Integrated Pest Management Crops Eastern, Nanjing 210095, Jiangsu, Peoples R ChinaNanjing Agr Univ, Coll Plant Protect, Nanjing 210095, Jiangsu, Peoples R China
Gao, Haitao
[1
,2
]
Wu, Han
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Nanjing Agr Univ, Coll Plant Protect, Nanjing 210095, Jiangsu, Peoples R China
Nanjing Agr Univ, Minist Agr, Key Lab Integrated Pest Management Crops Eastern, Nanjing 210095, Jiangsu, Peoples R ChinaNanjing Agr Univ, Coll Plant Protect, Nanjing 210095, Jiangsu, Peoples R China
Wu, Han
[1
,2
]
Dong, Liyao
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Nanjing Agr Univ, Coll Plant Protect, Nanjing 210095, Jiangsu, Peoples R China
Nanjing Agr Univ, Minist Agr, Key Lab Integrated Pest Management Crops Eastern, Nanjing 210095, Jiangsu, Peoples R ChinaNanjing Agr Univ, Coll Plant Protect, Nanjing 210095, Jiangsu, Peoples R China
Dong, Liyao
[1
,2
]
机构:
[1] Nanjing Agr Univ, Coll Plant Protect, Nanjing 210095, Jiangsu, Peoples R China
[2] Nanjing Agr Univ, Minist Agr, Key Lab Integrated Pest Management Crops Eastern, Nanjing 210095, Jiangsu, Peoples R China
American sloughgrass (Beckmannia syzigachne Steud.) is a problematic grass that is widely distributed in wheat and oilseed rape fields in China. The herbicides fenoxaprop-P-ethyl and mesosulfuron-methyl failed to control B. syzigachne JCWJ-R populations collected from a wheat field in Jiangsu Province. Dose-response experiments showed that JCWJ-R was resistant to the acetyl-CoA carboxylase (ACCase) inhibitors fenoxaprop-P-ethyl (33.8-fold), haloxyfop-R-methyl (12.7-fold), clethodim (7.8-fold) and pinoxaden (11.6-fold), and to the acetolactate synthase (ALS) inhibitors mesosulfuron-methyl (15.9-fold), pyroxsulam (17.6-fold), flucarbazone-Na (10.7-fold) and imazethapyr (7-fold). Resistance to ALS inhibitors was due to a Pro-197-Ser mutation in the ALS gene and resistance to ACCase inhibitors was due to an Ile-1781-Leu mutation in the ACCase gene. A derived cleaved amplified polymorphic sequence method was developed to detect the ALS mutation in B. syzigachne. This was combined with a previously established method to detect Ile-1781-Leu, and the mutation frequency and homozygous mutation rates in the JCWJ-R population were determined. The evolution of multiple resistance to ACCase and ALS inhibitors in this B. syzigachne population indicated that alternative methods should be developed to control resistant weeds.
机构:
Univ Western Australia, Sch Plant Biol, Western Australian Herbicide Resistance Initiat, Crawley, WA 6009, AustraliaUniv Western Australia, Sch Plant Biol, Western Australian Herbicide Resistance Initiat, Crawley, WA 6009, Australia
Yu, Q
Friesen, LJS
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Univ Western Australia, Sch Plant Biol, Western Australian Herbicide Resistance Initiat, Crawley, WA 6009, AustraliaUniv Western Australia, Sch Plant Biol, Western Australian Herbicide Resistance Initiat, Crawley, WA 6009, Australia
Friesen, LJS
Zhang, XQ
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Univ Western Australia, Sch Plant Biol, Western Australian Herbicide Resistance Initiat, Crawley, WA 6009, AustraliaUniv Western Australia, Sch Plant Biol, Western Australian Herbicide Resistance Initiat, Crawley, WA 6009, Australia
Zhang, XQ
Powles, SB
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Univ Western Australia, Sch Plant Biol, Western Australian Herbicide Resistance Initiat, Crawley, WA 6009, AustraliaUniv Western Australia, Sch Plant Biol, Western Australian Herbicide Resistance Initiat, Crawley, WA 6009, Australia