One species to another: sympatric Bt transgene gene flow from Brassica napus alters the reproductive strategy of wild relative Brassica juncea under herbivore treatment
文献类型：期刊论文
| 作者 | Liu, Yongbo; Stewart, C. Neal, Jr.; Li, Junsheng; Wei, Wei2 |
| 刊名 | ANNALS OF BOTANY
 |
| 出版日期 | 2018 |
| 卷号 | 122期号:4页码:617-625 |
| 关键词 | Fitness parameters P/O ratio Plutella xylostella sex allocation sympatric presence transgene flow wild relatives |
| ISSN号 | 0305-7364 |
| DOI | 10.1093/aob/mcy096 |
| 文献子类 | Article |
| 英文摘要 | 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. |
| 学科主题 | Plant Sciences |
| 出版地 | OXFORD |
| 电子版国际标准刊号 | 1095-8290 |
| WOS关键词 | POLLEN-OVULE RATIOS ; OILSEED RAPE ; SEX ALLOCATION ; INSECT-RESISTANCE ; WEEDY RELATIVES ; PLANT-GROWTH ; B.-JUNCEA ; NAPUS ; INTROGRESSION ; POPULATIONS |
| 语种 | 英语 |
| WOS记录号 | WOS:000446086500012 |
| 出版者 | OXFORD UNIV PRESS |
| 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] |
| 源URL | [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. |
入库方式： OAI收割
来源：植物研究所
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