オリゴキエテのワームのエンドシンビオティックな硫酸還元および硫酸酸化細菌
N Dubilier1, C Mülders, T Ferdelman
1Max Planck Institute of Marine Microbiology, Celsiusstrasse 1, D-28359 Bremen, Germany. ndubilie@mpi-bremen.de
Nature
|May 18, 2001
まとめ
海洋虫オラヴィウス・アルガーヴェンシス (Olavius algarvensis) の体内には,複数の共生細菌が共存しています. 硫酸を還元する細菌は,硫酸を酸化する共生生物にエネルギーを供給し,宿主内の新しい相互関係を示しています.
科学分野:
- マリン・バイオロジーの海洋生物学
- シンビオシスの研究
- 微生物生態学とは
背景:
- 単一の宿主内の複数のエンドシンビオントは,競争のために稀です.
- 貝やサンゴの既知の例は,利益がコストを上回ることを示しています.
- ホスト内のシンビオント間の直接的な相互関係は,以前は記述されていなかった.
研究 の 目的:
- 腸なしの海洋オリゴケートオラヴィウス・アルガーヴェンシス (Olavius algarvensis) の複数の共生体の共存を調査する.
- 共存するエンドシンビオント間の直接的な相互作用の可能性を探求する.
- O. algarvensis内の共生的なダイナミクスを解明する.
主な方法:
- オラヴィウス・アルガーヴェンシス (Olavius algarvensis) のエンドシンビオティックコミュニティを調査した.
- 異なるシンバイオント種間の代謝相互作用を分析した.
- ホスト・シンビオント・システム内のエネルギーと資源の流れを特徴づけた.
主要な成果:
- O. algarvensis. 内に発見されたエンドシンビオティック硫酸縮小細菌と硫酸酸化細菌.
- 硫酸を還元するバクテリアは硫化物を生成し,硫化物を酸化する共生生物によって利用されます.
- これらの共生体間の相互的関係を示し,エンドシンビオティックな硫黄循環を形成しました.
結論:
- 複数の共生体の共存は,ホストの利益だけでなく,直接の相互関係によって促進されます.
- オラヴィウス・アルガーヴェンシスは,内部硫黄循環を持つユニークな共生システムを宿している.
- この発見は,共生関係の進化と複雑さに関する私たちの理解を広げています.
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