AtSTOP1 regulates multiple genes critical for aluminum and proton resistance in Arabidopsis roots

DOI

Bibliographic Information

Other Title
  • シロイヌナズナSTOP1転写因子は酸耐性とアルミニウム耐性に関わる複数の遺伝子を制御する

Abstract

The Arabidopsis mutant stop1 (for sensitive to proton rhizotoxicity1) carries a missense mutation at an essential domain of the histidine-2-cysteine-2 zinc finger protein STOP1. Transcriptome analyses revealed that various genes were down-regulated in the mutant, indicating that STOP1 is involved in signal transduction pathways regulating aluminum (Al)- and proton-responsive gene expression. Critical genes for Al tolerance in Arabidopsis, AtALMT1, ALS3 and AtMATE co-down-regulated in the mutant. On the other hand, various gene belong to ion homeostasis, pH-regulating pathways and cell wall stabilization process were down regulated in the mutant. CIPK23, regulating a major K transporter, and a sulfate transporter, SULT3;5, were down-regulated in the mutant. In addition, integral profiling of the metabolites and transcripts revealed that pH-regulating metabolic pathways, such as the GABA shunt and biochemical pH stat pathways, are down-regulated in the mutant. These changes could explain the proton hypersensitivity of the mutant and would make the mutant more susceptible in acid soil stress than other Al-hypersensitive knock-out lines.

Journal

Details 詳細情報について

  • CRID
    1390282680608070784
  • NII Article ID
    130006992532
  • DOI
    10.14841/jspp.2010.0.0067.0
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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