Journal
PLANT PHYSIOLOGY AND BIOCHEMISTRY
Volume 49, Issue 3, Pages 257-264Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.plaphy.2010.12.009
Keywords
Apple (Malus domestica B.); Cytosolic malate dehydrogenase gene; Growth vigour; Cold and salt tolerance
Categories
Funding
- National Natural Science Foundation of China [30700549, 30771499]
- National Public Benefit (Agricultural) Research Foundation of China [200903044]
- Shandong Province Natural Science Foundation [ZR2010CQ013]
- Shandong Province Young and Middle-Aged Scientists Research Awards Fund [BS2009NY033]
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It is well-known that cytosolic NAD-dependent malate dehydrogenase (cyMDH; L-malate:NAD-oxidoreductase; EC 1.1.1.37) is an enzyme crucial for malic acid synthesis in the cytosol. Nothing is known about cyMDH in growth and stress tolerance. Here we characterised the role of the apple cyMDH gene (MdcyMDH, GenBank ID: DQ221207) in growth and tolerance to cold and salt stresses. MdcyMDH transcripts were highly accumulated in vigorously growing apple tissues, organs and suspension cells. In addition, MdcyMDH was sensitive to cold and salt stresses. MdcyMDH overexpression favourably contributed to cell and plant growth and conferred stress tolerance both in the apple callus and tomato. Taken together, our results indicated that MdcyMDH is involved in plant and cell growth as well as the tolerance to cold and salt stresses. (C) 2010 Elsevier Masson SAS. All rights reserved.
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