Light regulation of ascorbic acid biosynthesis in rice via light responsive cis-elements in genes encoding ascorbic acid biosynthetic enzymes.
The ascorbic acid (AsA) content and the mRNA levels of L-galactose-1-phosphate phosphatase (GPPase), and L-galactono-1,4-lactone dehydrogenase (GalLDH) increased by intense light, and decreased in the dark. Moreover, the promoter regions of GPPase and GalLDH contained light responsible cis-elements. These results suggest that in rice, AsA synthesis is regulated by light.
Fukunaga
Kazunari
K
Graduate School of Biosphere Science, Hiroshima University, Higashi-Hiroshima, Japan.
Fujikawa
Yukichi
Y
Esaka
Muneharu
M
D001205:Ascorbic Acid / Q000096:biosynthesis* / Q000235:genetics / Q000378:metabolism*; D005695:Galactosephosphates; D005796:Genes; D008027:Light; D012275:Oryza / Q000235:genetics / Q000378:metabolism*; D010088:Oxidoreductases / Q000235:genetics / Q000378:metabolism; D044925:Oxidoreductases Acting on CH-CH Group Donors; D010744:Phosphoric Monoester Hydrolases / Q000235:genetics / Q000378:metabolism; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism
D005695:Galactosephosphates; D012333:RNA, Messenger; C029973:galactose-1-phosphate; D010088:Oxidoreductases; D044925:Oxidoreductases Acting on CH-CH Group Donors; C093910:galactonolactone dehydrogenase; C069910:galactose-1-phosphatase; D010744:Phosphoric Monoester Hydrolases; D001205:Ascorbic Acid