Journal of Integrative Agriculture ›› 2016, Vol. 15 ›› Issue (06): 1275-1285.DOI: 10.1016/S2095-3119(15)61255-2

• 论文 • 上一篇    下一篇

Proteome analysis of alfalfa roots in response to water deficit stress

  

  • 收稿日期:2015-05-14 出版日期:2016-06-01 发布日期:2016-06-06

Proteome analysis of alfalfa roots in response to water deficit stress

Rahman Md Atikur1, Kim Yong-Goo1, Alam Iftekhar1, 3, LIU Gong-she2, Lee Hyoshin4, Lee Jeung Joo5, Lee Byung-Hyun1   

  1. 1 Division of Applied Life Sciences (BK21Plus), Institute of Agriculture & Life Sciences (IALS), Gyeongsang National University, Jinju 660-701, Republic of Korea
    2 Institute of Botany, Chinese Academy of Sciences, Beijing 100093, P.R.China
    3 National Institute of Biotechnology, Dhaka-1349, Bangladesh
    4 Division of Forest Biotechnology, Korea Forest Research Institute, Suwon 441-847, Republic of Korea
    5 Department of Applied Biology, Institute of Agriculture & Life Sciences (IALS), Gyeongsang National University, Jinju 660-701, Republic of Korea
  • Received:2015-05-14 Online:2016-06-01 Published:2016-06-06
  • Contact: Lee Byung-Hyun, Tel: +82-55-7721882, Fax: +82-55-7721889, E-mail: hyun@gnu.ac.kr
  • About author:Rahman Md Atikur, E-mail: atikgnu@gmail.com
  • Supported by:

    This work was supported by the National Research Foundation of Korea (NRF) Grant (NRF-2011-616-F00013). Alam I was supported by post-doctoral grant, and Rahman M A, Kim Y-G were supported by the scholarship from BK21Plus program, Ministry of Education, Republic of Korea.

Abstract:   To evaluate the response of alfalfa to water deficit (WD) stress, WD-induced candidates were investigated through a proteomic approach. Alfalfa seedlings were exposed to WD stress for 12 and 15 days respectively, followed by 3 days re-watering. Water deficit increased H2O2 content, lipid peroxidation, DPPH (1,1-diphenyl-2-picrylhydrazyl)-radical scavenging activity, and the free proline level in alfalfa roots. Root proteins were extracted and separated by two-dimentional polyacrylamide gel electrophoresis (2-DE). A total of 49 WD-responsive proteins were identified in alfalfa roots; 25 proteins were reproducibly found to be up-regulated and 24 were down-regulated. Two proteins, namely cytosolic ascorbate peroxidase (APx2) and putative F-box protein were newly detected on 2-DE maps of WD-treated plants. We identified several proteins including agamous-like 65, albumin b-32, inward rectifying potassium channel, and auxin-independent growth promoter. The identified proteins are involved in a variety of cellular functions including calcium signaling, abacisic acid (ABA) biosynthesis, reactive oxygen species (ROS) regulation, transcription/ translation, antioxidant/detoxification/stress defense, energy metabolism, signal transduction, and storage. These results indicate the potential candidates were responsible for adaptive response in alfalfa roots.

Key words: alfalfa ,  proteome ,  root ,  water deficit stress