Journal of Integrative Agriculture ›› 2019, Vol. 18 ›› Issue (9): 2041-2051.DOI: 10.1016/S2095-3119(19)62695-X

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  • 收稿日期:2018-09-05 出版日期:2019-09-01 发布日期:2019-08-31

MdSWEET17, a sugar transporter in apple, enhances drought tolerance in tomato

LU Jing1*, Sun Mei-hong2*, MA Qi-jun1, KANG Hui1, LIU Ya-jing1, HAO Yu-jin1, YOU Chun-xiang1  
  

  1. 1 National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an  271018, P.R.China
    2 Institute of Plant Biotechnology, College of Life Sciences, Shanghai Normal University, Shanghai 200234, P.R.China
  • Received:2018-09-05 Online:2019-09-01 Published:2019-08-31
  • Contact: Correspondence YOU Chun-xiang, E-mail: youchunxiang@126.com; HAO Yu-jin, E-mail: haoyujin@sdau.edu.cn
  • About author:LU Jing, E-mail: 609636775@qq.com; * These authors contributed equally to this work.
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (31471854, 31772288) and the Natural Science Foundation of Shandong Province, China (ZR2017ZC0328).

Abstract:

Sugars are important energy source and signaling molecule in plant, and sugar transporters such as SWEET (sugars will eventually be exported transporters) play important roles in plant growth and development as well as biotic and abiotic stresses.  In this study, a gene named MdSWEET17 was isolated from apple (Malus×domestic).  Expression analysis suggested that MdSWEET17 expressed in all tested tissues (root, stem, leaf, flower and fruit) and the transcript levels were different.  Furthermore, MdSWEET17 transgenic tomatoes and wild type were treated with drought.  The results showed transgenic lines had higher drought tolerance and accumulated more fructose.  Taken together, these findings indicated that MdSWEET17 take part in drought stress response and the regulation of fructose.

Key words: apple ,  MdSWEET17 ,  drought ,  soluble sugar ,  tomato