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ID 56311
フルテキストURL
著者
Hamada, Mayuko Ushimado Marine Institute, Okayama University
Schröder, Katja Interdisciplinary Research Center, Kiel Life Science, Kiel University
Bathia, Jay Interdisciplinary Research Center, Kiel Life Science, Kiel University
Kürn, Ulrich Interdisciplinary Research Center, Kiel Life Science, Kiel University
Fraune, Sebastian Interdisciplinary Research Center, Kiel Life Science, Kiel University
Khalturina, Mariia Marine Genomics Unit, Okinawa Institute of Science and Technology Graduate University
Khalturin, Konstantin Marine Genomics Unit, Okinawa Institute of Science and Technology Graduate University
Shinzato, Chuya Marine Genomics Unit, Okinawa Institute of Science and Technology Graduate University
Satoh, Nori Marine Genomics Unit, Okinawa Institute of Science and Technology Graduate University
Bosch, Thomas CG Interdisciplinary Research Center, Kiel Life Science, Kiel University
抄録
Many multicellular organisms rely on symbiotic associations for support of metabolic activity, protection, or energy. Understanding the mechanisms involved in controlling such interactions remains a major challenge. In an unbiased approach we identified key players that control the symbiosis between Hydra viridissima and its photosynthetic symbiont Chlorella sp. A99. We discovered significant up-regulation of Hydra genes encoding a phosphate transporter and glutamine synthetase suggesting regulated nutrition supply between host and symbionts. Interestingly, supplementing the medium with glutamine temporarily supports in vitro growth of the otherwise obligate symbiotic Chlorella, indicating loss of autonomy and dependence on the host. Genome sequencing of Chlorella sp. A99 revealed a large number of amino acid transporters and a degenerated nitrate assimilation pathway, presumably as consequence of the adaptation to the host environment. Our observations portray ancient symbiotic interactions as a codependent partnership in which exchange of nutrients appears to be the primary driving force.
キーワード
Chlorella
Hydra
evolutionary biology
genome
nitrogen metabolism
symbiosis
発行日
2018-03-31
出版物タイトル
eLife
7巻
出版者
eLife Sciences Publications
開始ページ
e35122
ISSN
2050-084X
資料タイプ
学術雑誌論文
言語
English
OAI-PMH Set
岡山大学
論文のバージョン
publisher
PubMed ID
DOI
Web of Sience KeyUT
関連URL
isVersionOf https://doi.org/10.7554/eLife.35122