| Budget Amount *help |
¥19,370,000 (Direct Cost: ¥14,900,000、Indirect Cost: ¥4,470,000)
Fiscal Year 2011: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2010: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2009: ¥13,130,000 (Direct Cost: ¥10,100,000、Indirect Cost: ¥3,030,000)
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| Research Abstract |
Ascorbate biosynthesis pathway and its regulation mechanism have been studied in photosynthesis organisms. A moss, Physcomitrella patens, possesses both D-mannose/L-galactose pathway and D-galacturonate pathway, and an identification of aldonolactonase reveals that the enzyme plays a role in regulation of ascorbate level in the moss. It has also revealed that the alternative D-galacturonate pathway contributes to ascorbate accumulation in ripened tomato fruits. In Arabidopsis leaves, VTC2, one of the components of D-mannose/L-galactose pathway, plays a central role in light regulation of ascorbate via transcriptional and post-translational control.
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