バクテリアによる甲虫-真菌相互性の保護
Jarrod J Scott1, Dong-Chan Oh, M Cetin Yuceer
1Department of Bacteriology, University of Wisconsin-Madison, WI 53706, USA.
Science (New York, N.Y.)
|October 4, 2008
まとめ
南方松の甲虫は,真菌対抗体に対する真菌共生体をサポートするために,細菌の化学物質に依存しています. この発見は,昆虫と抗生物質を産生するバクテリアの相互性の流行を強調し,抗菌薬の発見のための新しい道を示しています.
科学分野:
- 微生物生態学 微生物生態学とは
- 化学エコロジー 化学エコロジー
- 昆虫と微生物の共生です.
背景:
- ホスト-微生物共生は,生物の多様性と複雑性にとって根本的なものです.
- 南方松虫 (SPB) は,真菌と共生関係を保ち,樹木の防御と幼虫の栄養を克服するのに役立ちます.
- この複雑に絡み合った甲虫と真菌の相互関係の化学的根拠は,以前は不明でした.
研究 の 目的:
- 南方松の甲虫と真菌の共生を媒介する化学物質を特定するために.
- この昆虫と微生物の関連におけるバクテリアの役割を調査する.
- 新しい抗微生物化合物の発見のためのこのようなシステムの可能性を調査する.
主な方法:
- シンビオティックシステムによって生成される化学化合物の分析.
- 甲虫内の細菌共生体の局所化と流行を調査する.
- 特定された化合物の選択的毒性を真菌の抗生物質に対して評価する.
主要な成果:
- 細菌によって生成される多不飽和ペロキシドが,重要な化学媒介体として特定されました.
- この過酸化物は,甲虫の共生キノコの真菌アンタゴニストに対する選択的毒性を示す.
- 酸化過酸化物を産生するバクテリアは,昆虫の中で広く存在し,局所化しており,共進化した相互性を示唆しています.
結論:
- 南部の松虫-真菌の相互関係は,細菌によって生成される過酸化物によって化学的に媒介されます.
- この発見は,バクテリアが化学的防御を提供する共同進化した昆虫と微生物の関連性を明らかにしています.
- このような昆虫-抗生物質を産生するバクテリアの相互関係は,これまで考えられていたよりも一般的であり,抗菌薬の発見のための新しい戦略を提供します.
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