A stress-responsive gene from groundnut, Gdi-15, is homologous to flavonol 3-O-glucosyltransferase involved in anthocyanin biosynthesis.
Stress-tolerant crops are expected to express genes not normally expressed in susceptible crops. We have used desiccation stress coupled with high light intensity to identify groundnut as a relatively tolerant crop. Stress-responsive genes (Gdi, Groundnut Desiccation Induced) were cloned by subtractive hybridisation. The sequence of Gdi-15 shows homology to flavonol 3-O-glucosyltransferases, which are involved in anthocyanin biosynthesis. Gdi-15 transcripts increase markedly in response to stress, suggestive of a role in stress tolerance.
Gopalakrishna
R
R
Department of Crop Physiology, University of Agricultural Sciences, Bangalore, 560 065 India.
Kumar
G
G
KrishnaPrasad
B T
BT
Mathew
M K
MK
Udaya Kumar
M
M
D000595:Amino Acid Sequence; D000872:Anthocyanins / Q000096:biosynthesis*; D010367:Arachis / Q000201:enzymology* / Q000235:genetics* / Q000254:growth & development; D002462:Cell Membrane / Q000378:metabolism; D003001:Cloning, Molecular; D018556:Crops, Agricultural / Q000254:growth & development; D003890:Desiccation; D017343:Genes, Plant; D005964:Glucosyltransferases / Q000096:biosynthesis / Q000235:genetics*; D008969:Molecular Sequence Data; D010539:Permeability; D018515:Plant Leaves / Q000378:metabolism; D018749:RNA, Plant / Q000096:biosynthesis; D017386:Sequence Homology, Amino Acid
D000872:Anthocyanins; D018749:RNA, Plant; D005964:Glucosyltransferases; C023249:flavonol 3-O-glucosyltransferase