Characterization of isoflavone synthase gene from Psoralea corylifolia: a medicinal plant.
Isoflavones are known to possess medicinal properties and implicated in plant-pathogen interaction. We have for the first time isolated and functionally characterized an isoflavones synthase (IFS) gene from a traditionally acclaimed medicinal plant Psoralea corylifolia abundantly growing in tropical and subtropical regions. The IFS catalyzes the exclusive reaction of phenylpropanoid pathway in leguminous plants to produce isoflavones. The full-length cDNA (PcIFS) of the gene comprised 1,563 bp and putatively encodes a polypeptide of 520 amino acid residues. The gene is expressed ubiquitously although at varying levels in different parts of the plant. The expression analysis suggests that the gene is responsive to methyl jasmonate, salicylic acid and wounding. Overexpression of PcIFS in non-leguminous tobacco plant led to the accumulation of isoflavones in petal tissue, suggesting it a functional gene from P. corylifolia involved in isoflavones biosynthesis.
Misra
Prashant
P
National Botanical Research Institute, Council of Scientific and Industrial Research, Rana Pratap Marg, Lucknow, India.
Pandey
Ashutosh
A
Tewari
Shri Krishna
SK
Nath
Pravendra
P
Trivedi
Prabodh Kumar
PK
D000595:Amino Acid Sequence; D001483:Base Sequence; D035264:Flowers / Q000201:enzymology / Q000235:genetics; D015971:Gene Expression Regulation, Enzymologic / Q000235:genetics; D018506:Gene Expression Regulation, Plant / Q000235:genetics; D007529:Isoflavones / Q000096:biosynthesis*; D008969:Molecular Sequence Data; D010105:Oxygenases / Q000737:chemistry* / Q000235:genetics* / Q000302:isolation & purification; D010946:Plants, Medicinal / Q000201:enzymology* / Q000235:genetics*; D029907:Psoralea / Q000201:enzymology* / Q000235:genetics*
D007529:Isoflavones; D010105:Oxygenases; C048489:isoflavone synthase