Lack of fitness costs and inheritance of resistance to Bacillus thuringiensis Cry1Ac toxin in a near-isogenic strain of Plutella xylostella (Lepidoptera: Plutellidae)

doi:10.1002/ps.3991

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	Lack of fitness costs and inheritance of resistance to Bacillus thuringiensis Cry1Ac toxin in a near-isogenic strain of Plutella xylostella (Lepidoptera: Plutellidae)
	Zhu, Xun; Yang, Yanjv; Wu, Qingjun; Wang, Shaoli; Xie, Wen; Guo, Zhaojiang; Kang, Shi; Xia, Jixing; Zhang, Youjun
刊名	PEST MANAGEMENT SCIENCE
	2016
卷号	72 期号:2 页码:289-297
关键词	Plutella xylostella (L.) Bacillus thuringiensis near-isogenic lines lack of fitness costs inheritance of Cry1Ac resistance
ISSN号	1526-498X
DOI	10.1002/ps.3991
通讯作者	Zhu, Xun
英文摘要	BACKGROUND: Resistance to Bacillus thuringiensis (Bt) formulations in insects may be associated with fitness costs. A lack of costs enables resistance alleles to persist, which may contribute to the rapid development and spread of resistance in populations.RESULTS: To assess the fitness costs associated with Bt Cry1Ac resistance in Plutella xylostella, life tables were constructed for a near-isogenic resistant strain (NIL-R) and a susceptible strain in this study. No fitness costs associated with Cry1Ac resistance in NIL-R were detected, based on the duration of egg and larval stages, the survival of eggs and larvae, adult longevity, fecundity, net reproductive rate, gross reproduction rate, finite rate of increase and mean generation time. Based on log dose-probit lines, resistance in NIL-R is incompletely recessive and results from a single, autosomal, recessive locus; the degree of dominance was estimated to be -0.74 and -0.71 for F-1 (resistant female x susceptible male) and F-1' (susceptible female x resistant male) progeny respectively.CONCLUSION: Assessment of near-isogenic Cry1Ac-resistant and Cry1Ac-susceptible strains of P. xylostella indicated that resistance is not accompanied with fitness costs, and that resistance is incompletely recessive. These findings should be useful in managing the development of Bt Cry1Ac resistance. (C) 2015 Society of Chemical Industry
学科主题	Agronomy ; Entomology
语种	英语
出版者	WILEY-BLACKWELL
WOS记录号	WOS:000369723500009
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/100852]
专题	蔬菜花卉研究所_职能部门
作者单位	Chinese Acad Agr Sci, Inst Vegetables & Flowers, Dept Plant Protect, 12 South St Zhong Guan Cun, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Xun,Yang, Yanjv,Wu, Qingjun,et al. Lack of fitness costs and inheritance of resistance to Bacillus thuringiensis Cry1Ac toxin in a near-isogenic strain of Plutella xylostella (Lepidoptera: Plutellidae)[J]. PEST MANAGEMENT SCIENCE,2016,72(2):289-297.
APA	Zhu, Xun.,Yang, Yanjv.,Wu, Qingjun.,Wang, Shaoli.,Xie, Wen.,...&Zhang, Youjun.(2016).Lack of fitness costs and inheritance of resistance to Bacillus thuringiensis Cry1Ac toxin in a near-isogenic strain of Plutella xylostella (Lepidoptera: Plutellidae).PEST MANAGEMENT SCIENCE,72(2),289-297.
MLA	Zhu, Xun,et al."Lack of fitness costs and inheritance of resistance to Bacillus thuringiensis Cry1Ac toxin in a near-isogenic strain of Plutella xylostella (Lepidoptera: Plutellidae)".PEST MANAGEMENT SCIENCE 72.2(2016):289-297.