Infection-inhibition activity of avenacin saponins against the fungal pathogens Blumeria graminis f. sp. hordei, Bipolaris oryzae, and Magnaporthe oryzae

Yoshi Shige Inagaki, Yoshiteru Noutoshi, Keiko Fujita, Atsuko Imaoka, Sakae Arase, Kazuhiro Toyoda, Tomonori Shiraishi, Yuki Ichinose

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4 Citations (Scopus)


Triterpenoid saponins are sugar-modified triterpene derivatives. Cereals and other grasses are generally deficient in these secondary metabolites with the exception of oat. Oat accumulates antimicrobial triterpenoid saponins in its roots. These oat-root-derived compounds, called avenacins, confer broad-spectrum resistance to soil-borne pathogens. Here, we tested the effect of avenacins on the development of infection structures of fungal pathogens Blumeria graminis f. sp. hordei and Bipolaris oryzae and Magnaporthe oryzae. We show that avenacins are able to inhibit the infection process of these phytopathogens on plant hosts.

Original languageEnglish
Pages (from-to)69-73
Number of pages5
JournalJournal of General Plant Pathology
Issue number1
Publication statusPublished - Jan 1 2013



  • Avenacin saponin
  • Bipolaris oryzae
  • Blumeria graminis f. sp. hordei
  • Infection-inhibiting activity
  • Magnaporthe oryzae

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Plant Science

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