環境 ブレヴィアテア ハーバー ミュチュアリスト アルコバクター エピビオンツ
Emmo Hamann1,2, Harald Gruber-Vodicka3, Manuel Kleiner2
1Microbial Fitness Group, Max Planck Institute for Marine Microbiology, Celsiusstraße 1, 28359 Bremen, Germany.
Nature
|June 10, 2016
まとめ
新しく発見されたブレイヴィアテア原生体は,アーコバクター菌と相互関係を築いている. この共生は水素の移転によって引き起こされ,ブレイヴィアテアの健康状態を高め,通常は毒性に関連した細菌因子を利用します.
科学分野:
- 微生物学
- プロティストロジー
- シンビオシス研究
背景:
- ブレヴィアテアは,古代の低酸素の海洋環境により,しばしば無酸素なライフスタイルを持つ,動物や真菌と遠い親戚である,自由に生きる単細胞のプロティストです.
- Breviateaの他の微生物との特定の相互作用と代謝依存性は,ほとんど未調査のままである.
研究 の 目的:
- 新たに発見されたブリービア類のレニシア・リモサとその関連微生物の特徴について
- アルコバクテルの親戚と特定されたL. limosaとそのコロニー化細菌の相互作用の性質と分子メカニズムを解明する.
主な方法:
- 新種レニシア・リモザの栽培
- L.リモザとアーコバクテルの関連性の根拠を特定するための生理学的実験
- 2つの生物の分子変化を分析するために 全ゲノム配列化と微分プロテオミクス
- 他のBreviatea種の既存のトランスクリプトミックの再分析.
主要な成果:
- L.リモザとアーコバクテルの間の関連は,水素の移転によって誘発される相互共生であり,両方のパートナーに利益をもたらします.
- L. limosaは,アルコバクテルの存在のみで発現する新しいNAD (P) H受容ヒドロゲンゼにより,適性を高めています.
- アルコバクテルは,レニジアに対する反応として,動物細胞のコロニー化に典型的に関与するタンパク質 ("ウイルス性因子") をアップレギュレーションし,これらの因子の病原性および相互性における二重の役割を示唆する.
結論:
- ブレヴィアテアと水素を消費するアーコバクテルの間の相互作用は広く見られる.
- ウイルスの状況で最初に特定された分子機構は,有益な共生関係を促進するために再利用することができます.
- この研究は,新しい微生物のパートナーシップを明らかにし,細菌の"毒性"要因の適応性を強調しています.
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