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タイトル: Function of meiobenthos and microorganisms in cellulose breakdown in sediments of wetlands with different origins in Hokkaido
著者: Yamada, Kyohei
Toyohara, Haruhiko  KAKEN_id
著者名の別形: 豊原, 治彦
キーワード: Cellulase
Cellulose
Cold district
Microorganism
Hokkaido
Meiobenthos
Sediment
Wetland
発行日: May-2012
出版者: Springer Verlag
誌名: Fisheries Science
巻: 78
号: 3
開始ページ: 699
終了ページ: 706
抄録: To validate the mechanism of cellulose breakdown in cold climate wetlands, we investigated cellulase activity in sediments collected from 17 wetland sites in Hokkaido, the northern area of Japan. We evaluated cellulase activity by quantitative analysis of glucose released from carboxymethyl cellulose and found that sediments from peat fens demonstrated high activity, followed by sediments from lagoons and estuaries. Sediments from peat fens also contained greater amounts of organic matter, followed by lagoons and estuaries, thereby suggesting a strong positive correlation between organic matter content and cellulase activity. Evaluation of cellulase activity by qualitative cellulose zymographic analysis showed that various cellulases with different molecular sizes were implicated in cellulose breakdown in wetlands. Among them, cellulose breakdown in Meguma Pond (peat fen), Notsuke Gulf (peat fen), and Lake Utonai (lagoon) was potentially due to microorganism cellulase, while that in Lake Chobushi (lagoon) was ascribed to meiobenthos (Oligochaeta species) cellulase. The findings presented herein suggest that the origin and activity level of cellulase vary depending on the type of cold climate wetland.
著作権等: The final publication is available at www.springerlink.com
This is not the published version. Please cite only the published version.
この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
URI: http://hdl.handle.net/2433/156154
DOI(出版社版): 10.1007/s12562-012-0496-2
出現コレクション:学術雑誌掲載論文等

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