種子の初期進化史
Richard M Bateman1, Alan R T Spencer2,3, Jason Hilton4,5
1Jodrell Laboratory, Royal Botanic Gardens Kew, Richmond, Surrey, TW9 3DS, UK.
Biological reviews of the Cambridge Philosophical Society
|January 26, 2026
まとめ
本研究は、系統解析を用いてクレナツス科の種子の進化史を再構築する。主要な革新を特定し、線形的な進化傾向を否定し、植物の生存と分散に関する洞察を提供する。
背景:
- 種子は、裸子植物と被子植物における植物の生存と分散にとって極めて重要である。;種子の進化史を理解することは、主要な植物系統群の起源に関する洞察を提供する。;古生代は、ほとんどの種子植物系統群の起源と多様化を目撃した。
結論:
- 真の種子の起源は、花粉受容構造と送粉滴の形成を含む、複雑な生化学的および発生的プロセスを伴った。;共組織化は種子の進化において重要な役割を果たし、側生器官を終端構造に統合したが、進化の傾向は線形的ではなかった。;特定の種子植物のペルム紀末の絶滅は、特に乾燥感受性に関連する生殖上の脆弱性と関連している可能性がある。
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