| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Outline of Final Research Achievements |
We have identified an Arabidopsis LAT (L-type Amino acid Transporter) family transporter gene, named Resistant to Methyl Viologen 1 (RMV1), responsible for uptake of PA and its analog paraquat (PQ). In Arabidopsis genome, there are five LAT family genes. The LAT proteins exhibited various subcellular localization suggesting that the proteins function in intracellular trafficking of PAs. To elucidate biological function of polyamine transporters, we analyzed the environmental response of lat-defective mutants. Furthermore, involvement of amino acid polymorphism in RMV1 that determines natural variation of PQ tolerance in Arabidopsis accessions in transport activity was analyzed.
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