文献类型：期刊文献

中文题名：外源GABA对NaCl胁迫下中间锦鸡儿幼苗乙烯生成的调控作用

英文题名：Role of γ-Aminobutyric Acid(GABA) on Stimulating Ethylene Biosynthesis in Caragana intermedia Seedlings under NaCl Stress

作者：史胜青[1] 齐力旺[1] 肖文发[2] 李春秀[2] 林萍[1] 张守攻[1]

第一作者：史胜青

机构：[1]中国林业科学研究院林业研究所;[2]中国林业科学研究院森林生态环境与保护研究所

年份：2008

卷号：44

期号：9

起止页码：26-30

中文期刊名：林业科学

外文期刊名：Scientia Silvae Sinicae

收录：CSTPCD;;Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：国家十一五科技支撑计划"优质抗逆生态树种柠条;蒙古栎新品种选育"项目(2006BAD01A1606)

语种：中文

中文关键词：中间锦鸡儿;NaCl胁迫;γ-氨基丁酸;乙烯

外文关键词：Caragana intermedia; NaC1 stress; γ-aminobutyric acid; ethylene

分类号：S718.43

摘要：对NaCl胁迫条件下中间锦鸡儿幼苗施加外源GABA的研究表明:200 mmo.lL-1NaCl处理72 h时,幼苗体内乙烯含量增加,但是外源GABA能够进一步提高NaCl胁迫条件下乙烯含量;在250 mmol.L-1NaCl胁迫初期(24h)乙烯含量急剧增加,施加外源GABA反而抑制了乙烯的生成;随着胁迫时间的延长,外源GABA对乙烯的生成表现为促进作用。转录水平研究进一步表明:NaCl胁迫条件下外源GABA提高了乙烯生成关键基因1-氨基环丙烷-1-羧酸(ACC)氧化酶基因CaACO1和CaACO2在中间锦鸡儿根部的表达。
Exogenous GABA was applied on Caragana intermedia seedlings under NaCl stress. The results showed that the plants treated with 200 mmol·L^-1 significantly increase in ethylene production in 72 h, while exogenous GABA could further enhance the production of ethylene. At early stage treatments of 250mmol·L^-1 NaCl and exogenous GABA, NaCl-treated tissues showed obvious inerase in ethylene production, whereas exogenous GABA inhibited the production of ethylene in the NaCl- treated tissues. With the extension of treated time, exogenous GABA did promote the production of ethylene. At the transcriptional level, exogenous GABA induced more expression of amino-cyclopropane-1-carboxylie acid （ACC） oxydase genes, CaACO1 and CaACO2 in C. intermedia that was under NaCl stress, compared with NaCl stress only.