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	Overexpression of a foreign Bt gene in cotton affects the low-molecular-weight components in root exudates
	Yan Wei-Dong; Shi Wei-Ming; Li Bao-Hai; Zhang Min
刊名	PEDOSPHERE
	2007-06-01
卷号	17期号:3页码:324-330
关键词	gene overexpression low-molecular-weight components nutritional status root exudates transgenic cotton
ISSN号	1002-0160
通讯作者	Shi Wei-Ming(wmshi@issas.ac.cn)
英文摘要	Most research in the past using genetically modified crops (GM crops) has focused on the ecological safety of foreign gene (i.e., the gene flow), gene products (for example, Bt (Bacillus thuringiensis) protein), and the safety of transgenic food for humans. In this study, changes in both the species and amounts of low-molecular-weight components in cotton (Gossypium hirsutum L.) root exudates after foreign Bt gene overexpression were investigated under different nutritional conditions. Transgenic cotton containing Bt (Bt-cotton), supplemented with all the mineral nutrients, secreted more organic acids than the wild-type cotton (WT). When nitrogen was removed from the full-nutrient solution, the amount of organic acids secretion of Bt-cotton was lesser than that of WT. The roots of the transgenic cotton secreted lesser amounts of amino acids and soluble sugars than the WT roots in the full-nutrient solution. Deficiencies of P and K caused a large increase in the total amino acid and soluble sugar secretions of both Bt-cotton and WT, with larger increases observed in Bt-cotton. Because transferring the foreign Bt gene into cotton can result in alterations in the components of the root exudates, with the effect varying depending on the nutritional status, the cultivation of genetically modified crops, such as Bt-cotton, in soil environments should be more carefully assessed, and the possible effects as a result of the alterations in the root exudate components should be considered.
收录类别	SCI
WOS关键词	ORGANIC-ACIDS ; ALUMINUM ; RELEASE ; SOILS
WOS研究方向	Agriculture
WOS类目	Soil Science
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000246824900006
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558664
专题	南京土壤研究所
通讯作者	Shi Wei-Ming
作者单位	Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Yan Wei-Dong,Shi Wei-Ming,Li Bao-Hai,et al. Overexpression of a foreign Bt gene in cotton affects the low-molecular-weight components in root exudates[J]. PEDOSPHERE,2007,17(3):324-330.
APA	Yan Wei-Dong,Shi Wei-Ming,Li Bao-Hai,&Zhang Min.(2007).Overexpression of a foreign Bt gene in cotton affects the low-molecular-weight components in root exudates.PEDOSPHERE,17(3),324-330.
MLA	Yan Wei-Dong,et al."Overexpression of a foreign Bt gene in cotton affects the low-molecular-weight components in root exudates".PEDOSPHERE 17.3(2007):324-330.

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