Correlation Engine 2.0
Clear Search sequence regions


  • atpases (3)
  • auxin (1)
  • droughts (1)
  • gene (2)
  • gene plant (1)
  • glycol (2)
  • malus (1)
  • nicotiana (1)
  • plant (4)
  • proteins plant (3)
  • proton (2)
  • proton pumps (1)
  • subunit (3)
  • tobacco (3)
  • vacuole (5)
  • Sizes of these terms reflect their relevance to your search.

    Vacuole H(+)-ATPases (VHAs) are plant proton pumps, which play a crucial role in plant growth and stress tolerance. In the present study, we demonstrated that the apple vacuolar H(+)-ATPase subunit A (MdVHA-A) is highly conserved with subunit A of VHA (VHA-A) proteins from other plant species. MdVHA-A was expressed in vegetative and reproductive organs. In apple in vitro shoot cultures, expression was induced by polyethylene glycol (PEG)-mediated osmotic stress. We further verified that over-expression of MdVHA-A conferred transgenic tobacco seedlings with enhanced vacuole H+-ATPase (VHA) activity and improved drought tolerance. The enhanced PEG-mimic drought response of transgenic tobacco seedlings was related to an extended lateral root system (dependent on auxin translocation) and more efficient osmotic adjustment. Our results indicate that MdVHA-A is a candidate gene for improving drought tolerance in plants. Copyright © 2013 Elsevier GmbH. All rights reserved.

    Citation

    Qing-Long Dong, Chun-Rong Wang, Dan-Dan Liu, Da-Gang Hu, Mou-Jing Fang, Chun-Xiang You, Yu-Xin Yao, Yu-Jin Hao. MdVHA-A encodes an apple subunit A of vacuolar H(+)-ATPase and enhances drought tolerance in transgenic tobacco seedlings. Journal of plant physiology. 2013 Apr 15;170(6):601-9

    Expand section icon Mesh Tags

    Expand section icon Substances


    PMID: 23399407

    View Full Text