Role of plant polyamine transporters on stress response

2016 Fiscal Year Final Research Report

• Project/Area Number: 25450522
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Applied molecular and cellular biology
• Research Institution: Institute of Physical and Chemical Research
• Principal Investigator: Fujita Miki 国立研究開発法人理化学研究所, 環境資源科学研究センター, 研究員 (70332294)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: ポリアミン / トランスポーター / ストレス応答

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.

Free Research Field

植物分子生物学