シンビオティックバクテリアはアフィドの体色を変更する
Tsutomu Tsuchida1, Ryuichi Koga, Mitsuyo Horikawa
1Molecular Entomology Laboratory, RIKEN Advanced Science Institute, Wako 351-0198, Japan. t-tsuchida@riken.jp
Science (New York, N.Y.)
|November 25, 2010
まとめ
ピーナツ葉の色は,リケットシエラ菌に感染すると赤から緑に変化します. 染色体の変化によって引き起こされるこの色変化は,捕食者や寄生虫がこれらの昆虫と相互作用する方法を変化させる可能性があります.
科学分野:
- エコロジー エコロジー エコロジー
- 微生物学 微生物学とは
- 昆虫生物学 昆虫生物学について
背景:
- pea aphid の集団の色の変化は,捕食者と寄生虫との相互作用に影響します.
- 選択性エンドシンビオントは,昆虫に生息する微生物ですが,その生存に不可欠ではありません.
研究 の 目的:
- リケットシエラ・エンドシンビオントの感染が豆虫の体色に与える影響を調査する.
- 感染した pea aphids の色変化の生化学的基礎を理解するために.
主な方法:
- 西ヨーロッパで pea aphids のフィールドコレクション.
- アフィドの体色に関するスペクトロフォトメトリック分析.
- キノンとカロテノイドを定量化するためのピグメント分析.
主要な成果:
- 採集した豆虫の約8%がリケットシエラ菌に感染していた.
- リケットシエラ菌の感染により, pea aphidの体色が赤から緑に変化しました.
- 感染したアフィドは,青緑色ポリサイクルキノンのレベルが上昇し,カロテノイドの変化はほとんどなかった.
結論:
- Rickettsiella endosymbiontsは,ピーナッツの虫虫に顕著な色の変化を誘発することができます.
- 観察された色の変化は,色素の組成の変化と関連しています.
- このエンドシンビオントによって引き起こされる色の変化は,獲物-捕食者ダイナミクスやその他の共生関係を含む生態学的相互作用に影響を及ぼすと仮定されています.
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