Glyphosate resistance reduces kochia fitness: Comparison of segregating resistant and susceptible F2 populations

doi:10.1111/tpj.13618

	Glyphosate resistance reduces kochia fitness: Comparison of segregating resistant and susceptible F2 populations
	Martin, Sara L.; Benedict, Leshawn ; Sauder, Connie A.; Wei, Wei 3; da Costa, Leandro Oliveira 4; Hall, Linda M.; Beckie, Hugh J.
	2017
发表期刊	PLANT SCIENCE
ISSN	0168-9452
卷号	261 页码:69-79
摘要	Glyphosate is considered the world's most important herbicide, but widespread and continual use has resulted in the evolution of resistance. Kochia scoparia (kochia) has evolved resistance via tandem gene amplification of glyphosate's target, 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) and resistant populations have been reported from the Canadian Prairies and the Northern Great Plains. Here, we evaluated the fitness costs of EPSPS amplification in kochia by comparing susceptible and resistant full siblings from segregating F2 populations generated from within six populations. Kochia was expected to be highly diverse because of strong gene flow; however, six of the seven field-collected parents with higher EPSPS copy number were homozygous. Under competitive greenhouse conditions, the EPSPS type of the line's maternal parent showed persistent effects: delayed emergence, delayed flowering, and reductions in viable seed count and weight overall. High EPSPS copy number individuals had reduced seed count and weight, reduced competitive ability, and reduced final height in mixed stands, but better germination of the F3. However, all characteristics were highly variable and fitness costs were not constant across genetic backgrounds. In the absence of selection from glyphosate, kochia with increased EPSPS copy number will be at a competitive disadvantage in some genetic backgrounds.
关键词	Kochia scoparia Glyphosate resistance F2 segregating population Competitive fitness experiment Herbicide resistance 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) Gene amplification
学科领域	Plant Sciences
DOI	10.1111/tpj.13618
收录类别	SCI
语种	英语
WOS关键词	HERBICIDE-RESISTANCE ; GENE AMPLIFICATION ; SCOPARIA ; SYNTHASE ; COSTS ; DYNAMICS ; SCHRAD. ; WEEDS
WOS记录号	WOS:000408816000002
出版者	ELSEVIER IRELAND LTD
文献子类	Article
出版地	CLARE
资助机构	Agriculture and Agri-Food CanadaAgriculture & Agri Food Canada
作者邮箱	Sara.Martin@agr.gc.ca
作品OA属性	Bronze
引用统计	被引频次：12[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/22222
专题	植被与环境变化国家重点实验室
作者单位	1.Agr & Agri Food Canada, Ottawa Res & Dev Ctr, Ottawa, ON, Canada 2.Hall, Linda M.] Univ Alberta, Agr Food & Nutr Sci, Edmonton, AB, Canada 3.Beckie, Hugh J.] Agr & Agri Food Canada, Saskatoon Res & Dev Ctr, Saskatoon, SK, Canada 4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 5.Univ Passo Fundo, Passo Fundo, RS, Brazil
推荐引用方式 GB/T 7714	Martin, Sara L.,Benedict, Leshawn,Sauder, Connie A.,et al. Glyphosate resistance reduces kochia fitness: Comparison of segregating resistant and susceptible F2 populations[J]. PLANT SCIENCE,2017,261:69-79.
APA	Martin, Sara L..,Benedict, Leshawn.,Sauder, Connie A..,Wei, Wei.,da Costa, Leandro Oliveira.,...&Beckie, Hugh J..(2017).Glyphosate resistance reduces kochia fitness: Comparison of segregating resistant and susceptible F2 populations.PLANT SCIENCE,261,69-79.
MLA	Martin, Sara L.,et al."Glyphosate resistance reduces kochia fitness: Comparison of segregating resistant and susceptible F2 populations".PLANT SCIENCE 261(2017):69-79.

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