大規模な反動物ゲノム配列解析により,その進化と特徴の洞察が得られる

Lei Chen¹, Qiang Qiu¹, Yu Jiang²

¹Center for Ecological and Environmental Sciences, Northwestern Polytechnical University, Xi'an 710072, China.

Science (New York, N.Y.)

|June 22, 2019

まとめ

この研究では 44の反動物のゲノムが配列化され進化の過程でその多様性の特徴や集団の動態が明らかになりました類の個体数は人間の個体数が増加するにつれて減少し遺伝的進化に影響を与えました

科学分野:

* 進化生物学
* ゲノミクス
* 哺乳類の進化

背景:

* 歯類は,非常に成功している哺乳類の系統であり,有意な多様性を持っています.
* 生態学と農業の重要性から,反性の進化を理解することは極めて重要です.
* 主要な家畜種は,Ruminantiaサブオーダーに属しています.

研究の目的:

* 44種の反動物から de novo 組み立てられたゲノムを生成し,分析する.
* 進化的関係を解明するために時間調整された系統を構成する.
* 人口動態を調査し,反性の進化に関連する遺伝子を特定する.

主な方法:

*6つのファミリー全体で44種の牛のゲノムアセンブリ
* 進化のタイムラインを確立するために組み立てられたゲノムを用いた系統分析.
* 適応性遺伝子を特定するための集団動態モデリングと比較ゲノミクス.

主要な成果:

* ルーミナンティアにおける進化論の論争を解決する包括的な系統樹
* 人口の減少は10万〜50万年前に始まり,人間の拡大と一致しています.
* 再生動物の適応を促す可能性のある遺伝子と規制要素の発見

結論:

* この研究は,反性の進化を理解するための強力なゲノムフレームワークを提供します.
* ゲノムデータは,環境と人為的な変化に関連した有意な人口移動を明らかにしています.
* 識別された遺伝子は,重要な反性の特徴の進化に洞察を与えます.

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