社会的アメーバにおける原始的農業
Debra A Brock1, Tracy E Douglas, David C Queller
1Department of Ecology and Evolutionary Biology, Rice University, 6100 Main Street, Houston, Texas 77005, USA. dbrock@rice.edu
Nature
|January 21, 2011
まとめ
社会性アメーバ,Dictyostelium discoideumは,細菌を飼育することによって,原始的な農業を示しています. これは慎重な収穫と分散を伴い,新しい環境で生存の利点を提供します.
科学分野:
- 微生物学 微生物学とは
- 進化生物学の進化生物学について
- エコロジー エコロジー エコロジー
背景:
- 農業は人間の生態学的成功の鍵である.
- 菌類を栽培するアリ,白,甲虫は先進的な農業を営んでいます.
- 原始的な例としては,海のカタツムリや,藻類や真菌を飼育する魚が挙げられます.
研究 の 目的:
- 微生物における原始的な農業の共生を調査する.
- 社会的なアメーバDictyostelium discoideumにおける細菌の飼育を実証する.
- 微生物農業の進化的および生態学的影響を理解する.
主な方法:
- 野生で採取されたDictyostelium discoideumのクローンの観察.
- 果実体にバクテリアが組み込まれる分析.
- バクテリアの拡散と播種戦略の評価.
主要な成果:
- 野生のDictyostelium discoideumのクローンの約3分の1がバクテリアの養殖を行っています.
- これらのアミバは,細菌を果実体に組み込み,拡散させます.
- この戦略は,新しいバクテリアが希少な環境で確立する際の利点を提供します.
結論:
- Dictyostelium discoideumは,細菌との原始的な農業シンバイオシスに参加しています.
- この行動は,昆虫の農業と収束する進化を示している.
- 多世代間の利益は,農業シンバイオスの親族グループを好む.
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