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题名: Comparative Proteomic Analysis of the Thermotolerant Plant Portulaca oleracea Acclimation to Combined High Temperature and Humidity Stress
作者: Yang, Yunqiang1, 2; Chen, Jinhui3; Liu, Qi4; Ben, Cecile5; Todd, Christopher D.6; Shi, Jisen3; Yang Yongping(杨永平)1; null(胡向阳)1
刊名: JOURNAL OF PROTEOME RESEARCH
关键词: ABA ; high temperature ; high humidity ; Portulaca oleracea ; ROS
英文摘要: Elevated temperature and humidity are major environmental factors limiting crop yield and distribution. An understanding of the mechanisms underlying plant tolerance to high temperature and humidity may facilitate the development of cultivars adaptable to warm or humid regions. Under conditions of 90% humidity and 35 degrees C, the thermotolerant plant Portulaca oleracea exhibits excellent photosynthetic capability and relatively little oxidative damage. To determine the proteomic response that occurs in leaves of P. oleracea following exposure to high temperature and high humidity, a proteomic approach was performed to identify protein changes. A total of 51 differentially expressed proteins were detected and characterized functionally and structurally; these identified proteins were involved in various functional categories, mainly including material and energy metabolism, the antioxidant defense responses, protein destination and storage, and transcriptional defense-related proteins demonstrated marked increases in activity with exposure to heat and humidity, which led to lower accumulations of H2O2 and O-2(-) in P. oleracea compared with the thermosensitive plant Arabidopsis thaliana. The quickly accumulations of proline content and heat-shock proteins, and depleting abscisic acid (ABA) via increasing ABA-8'-hydroxylase were also found in P. oleracea under stress conditions, that resulted into greater stomata conductance and respiration rates. On the basis of these findings, we propose that P. oleracea employs multiple strategies to enhance its adaptation to high-temperature and high-humidity conditions.
出版日期: 2012-07-01
卷号: 11, 期号:7, 页码:3605-3623
DOI标识: 10.1021/pr300027a
语种: 英语
ISSN号: 1535-3893
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/15119
Appears in Collections:中国科学院青藏高原研究所昆明部_期刊论文

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作者单位: 1.Chinese Acad Sci, Key Lab Biodivers & Biogeog, Kunming Inst Bot, Inst Tibet Plateau Res, Kunming 650204, Yunnan, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Nanjing Forestry Univ, Key Lab Forest Genet & Biotechnol, Nanjing 210037, Jiangsu, Peoples R China
4.Wenzhou Med Coll, Inst Genom Med, Wenzhou 325035, Peoples R China
5.Univ Toulouse, EcoLab, F-31326 Castanet Tolosan, France
6.Univ Saskatchewan, Dept Biol, Saskatoon, SK S7N 5E2, Canada

Recommended Citation:
Yang, Yunqiang; Chen, Jinhui; Liu, Qi; Ben, Cecile; Todd, Christopher D.; Shi, Jisen; Yang, Yongping; Hu, Xiangyang.Comparative Proteomic Analysis of the Thermotolerant Plant Portulaca oleracea Acclimation to Combined High Temperature and Humidity Stress,JOURNAL OF PROTEOME RESEARCH,2012,11(7):3605-3623
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