Drought tolerance through over-expression of the expansin gene TaEXPB23 in transgenic tobacco

Copyright © 2011 Elsevier GmbH. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Journal of plant physiology. - 1979. - 168(2011), 9 vom: 15. Juni, Seite 960-6
1. Verfasser: Li, Feng (VerfasserIn)
Weitere Verfasser: Xing, Shichao, Guo, Qifang, Zhao, Meirong, Zhang, Jin, Gao, Qiang, Wang, Guiping, Wang, Wei
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2011
Zugriff auf das übergeordnete Werk:Journal of plant physiology
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Plant Proteins RNA, Messenger expansin protein, plant Water 059QF0KO0R Malondialdehyde 4Y8F71G49Q
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520 |a Expansins are proteins that are the key regulators of wall extension during plant growth. To investigate the role of TaEXPB23, a wheat expansin gene, we analyzed TaEXPB23 mRNA expression levels in response to water stress in wheat and examined the drought resistance of transgenic tobaccos over-expressing TaEXPB23. We found that the expression of TaEXPB23 corresponded to wheat coleoptile growth and the response to water stress. The results also indicated that the transgenic tobacco lines lost water more slowly than the wild-type (WT) plants under drought stress; their cells could sustain a more integrated structure under water stress than that of WT. Other physiological and biochemical parameters under water stress, such as electrolyte leakage, malondialdehyde (MDA) level, photosynthetic rate, F(v)/F(m) and ΦPSII, also suggested that the transgenic tobaccos were more drought resistant than WT plants 
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650 4 |a Research Support, Non-U.S. Gov't 
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700 1 |a Xing, Shichao  |e verfasserin  |4 aut 
700 1 |a Guo, Qifang  |e verfasserin  |4 aut 
700 1 |a Zhao, Meirong  |e verfasserin  |4 aut 
700 1 |a Zhang, Jin  |e verfasserin  |4 aut 
700 1 |a Gao, Qiang  |e verfasserin  |4 aut 
700 1 |a Wang, Guiping  |e verfasserin  |4 aut 
700 1 |a Wang, Wei  |e verfasserin  |4 aut 
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