44. 12-oxo-phytodienoic acid triggers expression of a distinct set of genes from jasmonates, and plays a role other than intermediate of jasmonates biosynthesis

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Other Title
  • 44. ジャスモン酸生合成中間体12-オキソ-フィトジエン酸によるジャスモン酸非依存の遺伝子群発現制御

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Description

Jasmonic acid (JA) and methyl jasmonate (MeJA) are cyclopentanone derivatives that originate from linolenic acid via an octadecanoid pathway. JA and MeJA (jasmonates) regulate diverse physiological processes such as wound responses, disease responses. Recent reports suggest that a cyclopentenone precursor of jasmonates, 12-oxo-phytodienoic acid (OPDA) itself induces gene expression like as JA. However, little is known about physiological significance of the OPDA-dependent gene expression. We used DNA microarray covering about 22000 genes of Arabidopsis thaliana and globally compared JA-, MeJA-, and OPDA-responsive genes and attempted to figure out OPDA-mediated physiological responses in gene expression level. Although OPDA-responsive genes were generally identical with JA- and MeJA-responsive genes, OPDA also induced expression of distinct set of genes from jasmonates. The genes which specifically responded to OPDA mainly consisted of regulation factors such as DNA binding proteins (ZAT10, DREB2A etc.) and protein kinases, and showed early and transient induction by the OPDA treatment. Many of those genes in this set were also induced by wounding. Moreover, the analysis for wounding using aos and opr3 mutants suggested that OPDA plays a role as a signaling substance, and regulates a set of genes related to wounding response via JA-independent pathway.

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Details 詳細情報について

  • CRID
    1390282679401181952
  • NII Article ID
    110002552659
  • NII Book ID
    AA11550064
  • DOI
    10.18978/jscrpanb.39.0_65
  • ISSN
    21896313
    09191887
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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