Transcriptomic evaluation of the enhanced plant growth-inhibitory activity caused by derivatization of <i>cis</i>-cinnamic acid

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  • Wasano Naoya
    Biodiversity Division, National Institute for Agro-Environmental Sciences
  • Sugano Mami
    Biodiversity Division, National Institute for Agro-Environmental Sciences
  • Nishikawa Keisuke
    Institute for Materials Chemistry and Engineering, Kyushu University
  • Okuda Katsuhiro
    Institute for Materials Chemistry and Engineering, Kyushu University
  • Shindo Mitsuru
    Institute for Materials Chemistry and Engineering, Kyushu University
  • Park So-Young
    Biodiversity Division, National Institute for Agro-Environmental Sciences
  • Hiradate Syuntaro
    Biodiversity Division, National Institute for Agro-Environmental Sciences
  • Kamo Tsunashi
    Biodiversity Division, National Institute for Agro-Environmental Sciences
  • Fujii Yoshiharu
    Biodiversity Division, National Institute for Agro-Environmental Sciences

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Other Title
  • シスケイヒ酸アナログの植物生長阻害活性を転写産物レベルで評価する
  • Transcriptomic evaluation of the enhanced plant growth-inhibitory activity caused by derivatization of cis-cinnamic acid

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To establish a rapid high-throughput evaluation system for the enhanced plant growth-inhibitory activity caused by modifications of cis-cinnamic acid’s (cis-CA’s) chemical structure, a DNA microarray assay was used to analyze the changes in early gene responses of Arabidopsis thaliana seedlings. After a 6-hr exposure to (Z)-3-(3-iodophenyl)acrylic acid, we observed an upregulation in three classes of early auxin-responsive genes, which was similar to the transcriptional response to indole-3-acetic acid (IAA), together with an upregulation of the genes related to environmental stress and toxin detoxification responses. Gene responses to 2-(3,4-dihydronaphthalen-1-yl)acetic acid were similar to those to IAA. In contrast, fewer genes were upregulated in response to its double-bond isomer, (Z)-2-[3,4-dihydronaphthalen-1(2H)-ylidene]acetic acid, than to cis-CA. DNA microarray data suggest that the structurally different cis-CA analogues trigger diverse gene responses.

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