古代の三方共同進化は,アティネのと微生物の共生であった

Cameron R Currie¹, Bess Wong, Alison E Stuart

¹Department of Ecology and Evolutionary Biology, University of Kansas, Lawrence, KS 66045, USA. ccurrie@ku.edu

Science (New York, N.Y.)

|January 18, 2003

まとめ

菌類を育てるアリ,菌類を栽培した菌類,微菌類の寄生虫は,5000万年の三方共同進化を繰り返しています. 寄生虫の宿主交換は,この古代の共生の中で継続的な共適応を促します.

科学分野:

エコロジーエコロジーエコロジー
進化生物学の進化生物学について
シンビオスのシンビオシス

背景:

菌類を栽培するアリは,生計を立てるために菌類を栽培し,重要な共生を形成します.
このアリとキノコの関係には,5000万年の共同進化の歴史があります.
3番目のパートナーであるマイクロ真菌寄生虫も,この共生に影響を与えます.

研究の目的:

の三重共同進化の歴史,その菌類の栽培種,および微真菌寄生虫を調査するために.
進化の過程でアリと真菌の共生を形作る寄生虫の役割を理解する.

主な方法:

系統遺伝学的分析は,3つの共生動物の系統の進化史を再構築するために使用されました.
古代と近代のレベルにおける系統遺伝子の一致性を評価した.

主要な成果:

系統遺伝学的分析は,古代の進化のレベルで3つの共生体間の完全な一致性を明らかにしました.
この一致性は,長年の三者共同進化の関係を示しています.
最近のレベルでは,寄生虫の宿主交換が観察され,共同適応が強化されました.

結論:

アリと真菌の共生は,アリ,真菌,微真菌寄生虫を含む三方共同進化のダイナミクスによって形作られています.
寄生虫による宿主交換は,継続的な共進化的軍拡競争を助長し,共生生物の相互作用をさらに洗練します.

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