One species to another: sympatric Bt transgene gene flow from Brassica napus alters the reproductive strategy of wild relative Brassica juncea under herbivore treatment

doi:10.1093/aob/mcy096

	One species to another: sympatric Bt transgene gene flow from Brassica napus alters the reproductive strategy of wild relative Brassica juncea under herbivore treatment
	Liu, Yongbo ; Stewart, C. Neal, Jr.; Li, Junsheng ; Wei, Wei 2
	2018
发表期刊	ANNALS OF BOTANY
ISSN	0305-7364
卷号	122 期号:4 页码:617-625
摘要	Background and Aims Since pollen flow or seed dispersal can contribute to transgene persistence in the environment, the sympatric presence of transgenic crops with their wild relatives is an ecological concern. In this study, we tested the hypothesis that proximate growth of a herbivore-resistant Bt crop and wild relatives coupled with the presence of herbivores can increase relative frequency of crop-to-wild transgene flow persistence outside of cultivation. Methods We conducted a field experiment using insect enclosures with and without herbivores with cultivated Bt-transgenic Brassica napus (Bt OSR) and wild brown mustard (Brassica juncea) in pure and mixed stands. Low-density diamondback moth (Plutella xylostella) caterpillar infestation treatments were applied and transgene flow and reproductive organs were measured. Key Results Bt-transgenic B. napus produced more ovules and pollen than wild mustard, but the pollen to ovule (P/O) ratio in the two species was not significantly different. Low-level herbivory had no effects on fitness parameters of Bt OSR or wild brown mustard or on the transgene flow frequency. All progeny from wild brown mustard containing the Bt transgene came from mixed stands, with a gene flow frequency of 0.66 %. In mixed stands, wild brown mustard produced less pollen and more ovules than in pure stands of brown mustard. This indicates a decreased P/O ratio in a mixed population scenario. Conclusions Since a lower P/O ratio indicates a shift in sex allocation towards relatively greater female investment and a higher pollen transfer efficiency, the presence of transgenic plants in wild populations may further increase the potential transgene flow by altering reproductive allocation of wild species.
关键词	Fitness parameters P/O ratio Plutella xylostella sex allocation sympatric presence transgene flow wild relatives
学科领域	Plant Sciences
DOI	10.1093/aob/mcy096
收录类别	SCI
语种	英语
WOS关键词	POLLEN-OVULE RATIOS ; OILSEED RAPE ; SEX ALLOCATION ; INSECT-RESISTANCE ; WEEDY RELATIVES ; PLANT-GROWTH ; B.-JUNCEA ; NAPUS ; INTROGRESSION ; POPULATIONS
WOS记录号	WOS:000446086500012
出版者	OXFORD UNIV PRESS
文献子类	Article
出版地	OXFORD
EISSN	1095-8290
资助机构	Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31200288] ; Beijing Nova ProgramBeijing Municipal Science & Technology Commission [xx2016B070, Z161100004916112]
作者邮箱	liuyb@craes.org.cn
作品OA属性	Green Published, Bronze
引用统计	被引频次：7[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/2S10CLM1/20482
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China 2.Stewart, C. Neal, Jr.] Univ Tennessee, Dept Plant Sci, 2431 Joe Johnson Dr, Knoxville, TN 37996 USA 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Liu, Yongbo,Stewart, C. Neal, Jr.,Li, Junsheng,et al. One species to another: sympatric Bt transgene gene flow from Brassica napus alters the reproductive strategy of wild relative Brassica juncea under herbivore treatment[J]. ANNALS OF BOTANY,2018,122(4):617-625.
APA	Liu, Yongbo,Stewart, C. Neal, Jr.,Li, Junsheng,&Wei, Wei.(2018).One species to another: sympatric Bt transgene gene flow from Brassica napus alters the reproductive strategy of wild relative Brassica juncea under herbivore treatment.ANNALS OF BOTANY,122(4),617-625.
MLA	Liu, Yongbo,et al."One species to another: sympatric Bt transgene gene flow from Brassica napus alters the reproductive strategy of wild relative Brassica juncea under herbivore treatment".ANNALS OF BOTANY 122.4(2018):617-625.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Liu-2018-One species（1075KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览请求全文