Overexpression of an ABA biosynthesis gene using a stress-inducible promoter enhances drought resistance in petunia

作     者：Alejandro C Estrada-Melo Chao Ma Michael S Reid Cai-Zhong Jiang 

作者机构：Department of Plant SciencesUniversity of California DavisDavisCAUSA United States Department of AgricultureCrops Pathology and Genetic Research UnitAgricultural Research ServiceDavisCAUSA 

出 版 物：《Horticulture Research》 (园艺研究（英文）)

年 卷 期：2015年第2卷第1期

页      面：255-263页

核心收录：

学科分类：0710[理学-生物学] 071001[理学-植物学] 07[理学] 

基　　金：This work was funded in part by United States Department of Agriculture(USDA)Floriculture Initiative(5306-21000-019-00D and 5306-13210-001-02S) by the Plant Science Department at the University of California,Davis through the Jastro Scholarship 

主　　题：inducible pet drought 

摘      要：The response of plants to drought stress includes reduced transpiration as stomates close in response to increased abscisic acid(ABA)*** overexpression of 9-cis-epoxycarotenoid dioxygenase(NCED),a key enzyme in ABA biosynthesis,increases drought resistance,but causes negative pleiotropic effects on plant growth and *** overexpressed the tomato NCED(LeNCED1)in petunia plants under the control of a stress-inducible promoter,*** water stress,the transgenic plants had increased transcripts of NCED mRNA,elevated leaf ABA concentrations,increased concentrations of proline,and a significant increase in drought *** transgenic plants also displayed the expected decreases in stomatal conductance,transpiration,and *** 14 days without water,the control plants were dead,but the transgenic plants,though wilted,recovered fully when ***-watered transgenic plants grew like non-transformed control plants and there was no effect of the transgene on seed dormancy.