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

Naoya Wasano, Mami Sugano, Keisuke Nishikawa, Katsuhiro Okuda, Mitsuru Shindo, So Young Park, Syuntaro Hiradate, Tsunashi Kamo, Yoshiharu Fujii

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To establish a rapid high-throughput evaluation system for the enhanced plant growth-inhibitory activity caused by modifications of <i>cis</i>-cinnamic acid's (<i>cis</i>-CA's) chemical structure, a DNA microarray assay was used to analyze the changes in early gene responses of <i>Arabidopsis thaliana</i> seedlings. After a 6-hr exposure to (<i>Z</i>)-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, (<i>Z</i>)-2-[3,4-dihydronaphthalen-1(2<i>H</i>)-ylidene]acetic acid, than to <i>cis</i>-CA. DNA microarray data suggest that the structurally different <i>cis</i>-CA analogues trigger diverse gene responses.
Original languageEnglish
Pages (from-to)85-90
Number of pages6
JournalJournal of Pesticide Sciences
Issue number2
Publication statusPublished - 2014


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