東日本のムギ類赤かび病罹病穂から分離された病原菌の菌種と分離菌株のかび毒産生性  [in Japanese] Pathogens associated with Fusarium head blight of wheat and barley in the eastern part of Japan and their mycotoxin productivity  [in Japanese]

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Abstract

東日本(東北・関東・東山・東海・北陸地域)のムギ類赤かび病罹病穂から分離したFusariumおよびMicrodochium属菌の菌種と米培地でのかび毒産生性を調査した。得られた分離390菌株は,F. graminearum種複合体が優占(94.4%)し,残りはM. nivale(3.5%),F. avenaceum(1.0%),F. equiseti(0.3%),種名未同定のFusarium spp. (0.8%)であった。かび毒産生調査に供試したF. graminearum種複合体99菌株のうちDON産生型菌株は44.4%を占め,各地域での本菌株の割合は東北(58.7%)が最も高く,関東・東山(50.0%),東海(22.2%),北陸(0%)の順に低下した。一方,NIV産生型菌株は54.5%を占め,北陸(100%)が最も高く,東海(77.8%),関東・東山(46.2%),東北(41.3%)の順に低くなり,両型の菌株の分布に地域差が見られた。ZEA産生菌株は2菌株で,T-2トキシン産生菌株は認められなかった。

Isolates of Fusarium and Microdochium species associated with Fusarium head blight of wheat and barley were collected in the eastern part of Japan except Hokkaido from 2002 to 2004. After their single-spore isolation followed by the species identification, their mycotoxin productivity was examined on rice medium for deoxynivalenol(DON), nivalenol(NIV), T-2 toxin and zearalenone(ZEA). A total of 390 isolates were classified into F. graminearum species complex(94.4%), M. nivale(3.8%), F. avenaceum(1.1%), F. equiseti(0.3%) and F. spp.(0.8%). Ninety-nine F. graminearum species complex isolates selected from 390 isolates were classified into DON chemotype(44.4%) and NIV chemotype(54.5%), and these chemotypes differed in geographic distribution. Among these 99 F. graminearum species complex isolates, two isolates produced ZEA, and none of the isolates produced T-2 toxin.

Journal

  • Bulletin of the National Agricultural Research Center

    Bulletin of the National Agricultural Research Center (11), 191-199, 2008-09

    農業技術研究機構中央農業総合研究センター

Cited by:  1

Codes

  • NII Article ID (NAID)
    120006586652
  • NII NACSIS-CAT ID (NCID)
    AA11651334
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    18816738
  • NDL Article ID
    9661087
  • NDL Source Classification
    ZR7(科学技術--農林水産--農産)
  • NDL Call No.
    Z74-C939
  • Data Source
    CJPref  NDL  IR  JASI 
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