| Budget Amount *help |
¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000)
Fiscal Year 2020: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2019: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2018: ¥9,750,000 (Direct Cost: ¥7,500,000、Indirect Cost: ¥2,250,000)
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| Outline of Final Research Achievements |
Auxin plays an essential role in plant growth and development. Phenylacetic acid (PAA) is an abundant natural auxin, but its biosynthesis and physiological roles remain elusive. In this study, we investigated the PAA biosynthesis pathway in Arabidopsis. We demonstrated that ADT genes can modulate the PAA levels and phenyl pyruvate is a key biosynthetic intermediate of PAA. CYP79A2 gene can modulate the PAA levels, but is not involved in the main PAA biosynthesis pathway. TAA1 homologs can catalyze the conversion of Phe to phenyl pyruvate in vitro, while they may not play important roles in PAA biosynthesis in plants.
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