中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > Arabidopsis LOS5 Gene Enhances Chilling and Salt Stress Tolerance in Cucumber 农业科学学报 (英文) 2013,12 (5)
Position: Home > Articles > Arabidopsis LOS5 Gene Enhances Chilling and Salt Stress Tolerance in Cucumber Journal of Integrative Agriculture 2013,12 (5)

Arabidopsis LOS5 Gene Enhances Chilling and Salt Stress Tolerance in Cucumber

作  者：
Liu Li-ying;Duan Liu-sheng;Zhang Jia-chang;Mi Guo-quan;Zhang Xiao-lan;Zhang Zhen-xian;Ren Hua-zhong
单  位：
China Agr Univ, Coll Agron & Biotechnol, Beijing 100193, Peoples R China;Henan Acad Agr Sci, Inst Hort, Zhengzhou 450002, Peoples R China
关键词：
ABA;low-temperature stress;LOS5;transgenic plant;cucumber;salt stress
摘  要：
Low temperature and high salinity are the major abiotic stresses that restrict cucumber growth and production, breeding materials with multiple abiotic resistance are in greatly need. Here we investigated the effect of introducing the LOSS gene, a key regulator of ABA biosynthesis in Arabidopsis thaliana, under the stress-responsive RD29A promoter into cucumber (Cucumis sativus L. cv. S516). We found that T-1 RD29A-LOS5 transgenic lines have enhanced tolerance to cold and salt stresses. Specifically, transgenic lines exhibited dwarf phenotypes with reduced leaf number, shorter internode, decreased length of the biggest leaf, fewer female flowers, shorter fruit neck and lower vitamin C (Vc). The increased cold tolerance can be reflected from the significantly decreased cold index, the reduced electrolyte leakage index and the MDA content upon cold treatment as compared to those in the control. This may result from the accumulation of internal ABA, soluble sugars and proline, and the enhanced activities of protective enzymes superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) in the transgenic lines. Under salt treatment, the transgenic lines exhibited increased germination index, vigor index, more lateral roots and increased root fresh weight. Moreover, RD29A-LOS5 transgenic plants displayed quicker responses in salt stress than that in low-temperature stress.

相似文章

导出引用
计量
文章访问数: 15
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46