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ヘミコルダートゲノムとデウテロストーム起源
Oleg Simakov1,2, Takeshi Kawashima3, Ferdinand Marlétaz4
1Molecular Genetics Unit, Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa 904-0495, Japan.
Nature
|November 19, 2015
まとめ
エコーンワームのゲノム配列解析は 初期デウテロストームの共通の特徴を明らかにしています これらの発見は,海洋無脊椎動物における フィルター餌と裂の進化に光を当てています
科学分野:
- 海洋生物学
- 進化的ゲノミクス
- 発達生物学
背景:
- エコーンワーム (ヘミコルド類) は,海中の無脊椎動物で,皮動物や皮動物と特徴を共有し,デウテロストーム群を形成する.
- デウテロストームの起源を 解明する鍵となるのは その進化的関係を理解することです
研究 の 目的:
- 2つのエコンワーム種のゲノム配列の草案を報告する: Saccoglossus kowalevskiiとPtychodera flava
- これらのゲノムを他のバイラトリアンと比較して 祖先のデウテロストームの特徴と 進化の経路を特定する.
主な方法:
- ゲノム配列の設計図を2つのエコーンのワーム種に
- 多様な二国間ゲノムによる比較ゲノム解析
- 保存された合成と非コード配列の識別
主要な成果:
- ヘミコルダトゲノムは,他の双極性菌と保存された合成を示し,深く保存された非コーディング配列を含んでいます.
- 喉の裂の発達とフィルター・フィーディングに関連したデュテロストーム特有の遺伝子クラスタが特定されました.
- フィルター・フィーディングの適応と関連している可能性のある,多くのデュテロストーム特異的な遺伝子ノベルティが発見されました.
結論:
- この研究は,初期のデュテロストームの進化とフィルター・フィーディングの遺伝的基盤の洞察を提供します.
- ヘミコルダートゲノムは,裂のような重要なデウテロストームの進化を理解するために不可欠です.
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