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Aromatic amino acid metabolism during organogenesis in rice callus cultures
Author(s) -
Kavi Kishor P. B.
Publication year - 1989
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1989.tb04644.x
Subject(s) - callus , chorismate mutase , shikimate pathway , biochemistry , aromatic amino acids , organogenesis , oryza sativa , tryptophan , biology , enzyme , metabolism , amino acid , shoot , biosynthesis , botany , gene
The activity during root and shoot initiation of key enzymes involved in aromatic amino acid metabolism was examined in rice ( Oryza sativa L. cv. Bala) callus cultures. Increased activities of the enzymes quinate:NAD + oxidoreductase (EC 1.1.1.24), shikimate kinase (EC 2.7.1.71), chorismate mutase (EC 5.4.99.5), anthranilate synthase (EC 4.1.3.27) and tryptophan synthetase (EC 4.2.1.20) were noticed in organ‐forming callus compared to proliferating callus of rice, especially prior to the visible manifestation of form. These results suggest a correlation between organogenesis and the aromatic amino acid pathway.