Characterization of plant immunity-activating mechanism by a pyrazole derivative |
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| Authors: | Miyuki Kusajima Moeka Fujita Hiromoto Yamakawa Tsukasa Ushiwatari Takamasa Mori Kazuki Tsukamoto |
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| Institution: | 1. Department of Bioscience and Biotechnology, Fukui Prefectural University , Fukui, Japan;2. Institute of Crop Science, National Agriculture and Food Research Organization (NARO) , Ibaraki, Japan;3. Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University , Fukuoka, Japan |
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| Abstract: | ABSTRACT A newly identified chemical, 4-{3-(3,5-dichloro-2-hydroxybenzylidene)amino]propyl}-4,5-dihydro-1H-pyrazol-5-one (BAPP) was characterized as a plant immunity activator. BAPP enhanced disease resistance in rice against rice blast disease and expression of a defense-related gene without growth inhibition. Moreover, BAPP was able to enhance disease resistance in dicotyledonous tomato and Arabidopsis plants against bacterial pathogen without growth inhibition, suggesting that BAPP could be a candidate as an effective plant activator. Analysis using Arabidopsis sid2-1 and npr1-2 mutants suggested that BAPP induced systemic acquired resistance (SAR) by stimulating between salicylic acid biosynthesis and NPR1, the SA receptor protein, in the SAR signaling pathway. |
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| Keywords: | Systemic acquired resistance plant activator rice tomato Arabidopsis |
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