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タイトル: Identification of Endosymbionts in Oligobrachia mashikoi (Siboglinidae, Annelida)
著者: Kubota, Norihiro
Kanemori, Masaaki link image link image
Sasayama, Yuichi link image
Aida, Masato
Fukumori, Yoshihiro link image link image
久保田, 憲広
金森, 正明
笹山, 雄一
會田, 将人
福森, 義宏
発行日: 2007年 6月
出版社(者): 日本微生物生態学会
雑誌名: Microbes and environments
ISSN: 1342-6311
巻: 22
号: 2
開始ページ: 136
終了ページ: 144
キーワード: Oligobrachia mashikoi
beard worm
16S rRNA gene
denaturing gradient gel electrophoresis (DGGE)
抄録: Oligobrachia mashikoi, a frenulata, is a marine invertebrate living in an unusual habitat in Tsukumo Bay (20-25m deep), Japan. It lacks a mouth and a gut, and instead possesses specialized cells called bacteriocytes, in which endosymbiotic bacterial cells are kept. The endosymbiosis involves specific interactions and obligatory metabolic exchanges between the host and endosymbiotic bacterial cells. Analyses of 16S rRNA genes from the endosymbiotic cells indicated that there are at least seven phylotypes of endosymbionts in O. mashikoi, and these phylotypes are closely related Gammaproteobacteria among which sequence homology was more than 97.6%. The analyses suggested that an adult worm predominantly accommodates one of the seven phylotypes. In situ hybridization targeting 16S rRNA demonstrated that the distribution patterns of the bacterial cells in adult worms were very similar among at least two phylotypes of the endosymbionts. The findings suggest that O. mashikoi has a strict selection mechanism for its endosymbiont.
URI: http://hdl.handle.net/2297/12422
関連URI: http://ci.nii.ac.jp/naid/110006290376/
資料種別: Journal Article
権利関係: 日本微生物生態学会;本文データは日本微生物生態学会の許諾に基づきCiNiiから複製したものである
版表示: publisher

このアイテムを引用あるいはリンクする場合は次の識別子を使用してください。 http://hdl.handle.net/2297/12422



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