有明海のり漁場から分離したあかぐされ病原菌Ｐｙｔｈｉｕｍ　ＩＶ　　病原菌株の血清学的区別

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書誌事項

タイトル別名
  • Studies on Pathogenic <i>Pythium</i> of Laver Red Rot in Ariake Sea Farm-IV
  • アリアケカイノリ ギョジョウ カラ ブンリシタ アカグサレ ビョウゲンキン P
  • 病原菌株の血清学的区別

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抄録

A comparative study of Pythium strains causing laver red rot in Ariake Sea of Kyushu and in Tohoku was carried out serologically by preparing antisera against mycelia of Pythium sp. S1 from Ariake Sea and P. porphyrae M1 from Miyagi Prefecture of Tohoku. In agar-gel diffusion between the antisera and mycelial extract-antigens, 5 test strains from Ariake Sea were found to be related to 2 strains of P. porphyrae in general patterns. However, they could be distinguished from P. porphyrae by some differences in pattern and/or the number of precipitin lines, and closely resembled 2 strains from Fukushima Prefecture of Tohoku. Therefore, Pythium strains of laver red rot could be divided into two serological groups which corresponded with the groups based on morphology and physiology of the test strains. On the other hand, the two antisera did not cross-react with the antigens of terrestrial species, P. monospermum, P. debaryanum, P. aphanidermatum the P. spinosum. But one precipitin line was produced when the antigen of P. monospermum was tested with antiserum to Pythium sp. S1 indicating that P. monospermum morphologically resembles the strains from Ariake Sea rather than P. porphyrae.<br> The strains from Ariake Sea and Fukushima Prefecture were identified as P. porphyrae taxonomically, but the species was further subdivided into two groups, namely Ariake-Fukushima group and Miyagi group, based on serological and morphological characteristics.

収録刊行物

  • 日本水産学会誌

    日本水産学会誌 43 (11), 1313-1318, 1977

    公益社団法人 日本水産学会

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