Global Network Analysis of ABA-regulated Dehydration Stress Response by Transcriptomics and Metabolomics

DOI

Bibliographic Information

Other Title
  • シロイヌナズナ共発現ネットワークを用いた乾燥ストレス応答性トランスクリプトーム解析

Abstract

ABA is a phytohormone that plays an essential role in dehydration stress response. Many of dehydration inducible genes are regulated by ABA signal. There are 6 genes encoding a 9-cis-epoxycarotenoid dioxygenase (NCED), a key enzyme involved in the biosynthesis of ABA in Arabidopsis genome. Among the 6 NCEDs, NCED3 is involved in dehydration-inducible ABA accumulation that is essential for dehydration tolerance. In the present study, using NCED3 knockout mutant (nc3-2), we analyzed the ABA-dependent transcriptome and metabolome in response to dehydration stress. Transcriptome analysis showed that ABRE and AREB/ABF are major cis- and trans-acting factors, respectively, in ABA-dependent gene expression in the dehydration-stress response. Co-expression analysis also showed the global gene-to-gene correlations occurred in ABA-regulated genes. Integration of metabolomics and transcriptomics analyses revealed new molecular mechanisms of dynamic metabolic networks in response to dehydration stress. Endogenous ABA plays an essential role in these processes.

Journal

Details 詳細情報について

  • CRID
    1390282680609292416
  • NII Article ID
    130006994343
  • DOI
    10.14841/jspp.2009.0.0906.0
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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