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

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• 作者：Yoshi-Shige Inagaki (1)
  Yoshiteru Noutoshi (2)
  Keiko Fujita (1) (4)
  Atsuko Imaoka (3)
  Sakae Arase (3)
  Kazuhiro Toyoda (1)
  Tomonori Shiraishi (1)
  Yuki Ichinose (1)
  
• 关键词：Avenacin saponin ; Infection ; inhibiting activity ; Blumeria graminis f. sp. hordei ; Bipolaris oryzae ; Magnaporthe oryzae
• 刊名：Journal of General Plant Pathology
• 出版年：2013
• 出版时间：January 2013
• 年：2013
• 卷：79
• 期：1
• 页码：69-73
• 全文大小：277KB
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• 作者单位：Yoshi-Shige Inagaki (1)
  Yoshiteru Noutoshi (2)
  Keiko Fujita (1) (4)
  Atsuko Imaoka (3)
  Sakae Arase (3)
  Kazuhiro Toyoda (1)
  Tomonori Shiraishi (1)
  Yuki Ichinose (1)
  
  1. Plant Pathology and Genetic Engineering Laboratory, Faculty of Agriculture, Okayama University, Tsushima-naka 1-1-1, Okayama, 700-8530, Japan
  2. Research Core for Interdisciplinary Sciences, Okayama University, Tsushima-naka 3-1-1, Okayama, 700-8530, Japan
  4. Faculty of Life and Environmental Sciences, Prefectural University of Hiroshima, Nanatsuka 562, Shobara, 727-0023, Japan
  3. Laboratory of Plant Pathology, Faculty of Life and Environmental Science, Shimane University, Nishikawatsu 1060, Matsue, 690-8504, Japan
  
• ISSN：1610-739X

文摘

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.