Characterization of plant immunity-activating mechanism by a pyrazole derivative

Miyuki Kusajima, Moeka Fujita, Hiromoto Yamakawa, Tsukasa Ushiwatari, Takamasa Mori, Kazuki Tsukamoto, Hiroshi Hayashi, Akiko Maruyama-Nakashita, Fang Sik Che, Hideo Nakashita

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)1427-1435
Number of pages9
JournalBioscience, Biotechnology and Biochemistry
Issue number7
Publication statusPublished - Jul 2 2020

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Analytical Chemistry
  • Biochemistry
  • Applied Microbiology and Biotechnology
  • Molecular Biology
  • Organic Chemistry


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