Abstract
We report the identification of a full-length cDNA clone encoding cytosolic glyceraldehyde-3-phosphate dehydrogenase (GAPDH, EC 1.2.1.12) in the desiccation-tolerant plant Craterostigma plantagineum. The DNA sequence of the cDNA clone is homologous to cytosolic GAPDH cDNAs from other higher plants. The GAPDH transcript increases rapidly in abundance during dehydration or abscisic acid (ABA) treatment. The increase in mRNA levels is directly correlated with higher protein and enzyme levels. These results imply that enhanced rates of glycolysis are one of the immediate cellular responses to water deficit. This may be a mechanism by which the plant cell prepares for a demand of ATP and NADH2 during recovery.
MeSH Terms
Abscisic Acid/pharmacology
Amino Acid Sequence
Cloning, Molecular
Cytosol/metabolism
DNA, Complementary/genetics
Desiccation
Gene Expression Regulation, Plant/drug effects,physiology
Gene Library
Glyceraldehyde-3-Phosphate Dehydrogenases/biosynthesis,genetics,metabolism
Molecular Sequence Data
Plants/enzymology,genetics
RNA, Messenger/analysis,biosynthesis
RNA, Plant/analysis
Sequence Alignment
Sequence Analysis, DNA
Sequence Homology, Amino Acid
Chemicals
DNA, Complementary
RNA, Messenger
RNA, Plant
Abscisic Acid
Glyceraldehyde-3-Phosphate Dehydrogenases
Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Velasco R
Max-Planck-Institut für Züchtungsforschung, Köln, Germany.
Salamini F
Bartels D
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