The evolution of reproductive structures in seed plants: a re-examination based on insights from developmental genetics

The evolution of reproductive structures in seed plants: a re-examination based on insights from developmental genetics

Summary The study of developmental genetics is providing insights into how plant morphology can and does evolve, and into the fundamental nature of specific organs. This new understanding has the potential to revise significantly the way we think about seed plant evolution, especially with regard to...

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Bibliographische Detailangaben
Veröffentlicht in:New Phytologist. - New Phytologist Trust. - 194(2012), 4, Seite 910-923
Format: Online-Aufsatz
Veröffentlicht: 2012
Zugriff auf das übergeordnete Werk:New Phytologist
Schlagworte:developmental genetics evolution integument ovule seed plants Biological sciences
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520 |a Summary The study of developmental genetics is providing insights into how plant morphology can and does evolve, and into the fundamental nature of specific organs. This new understanding has the potential to revise significantly the way we think about seed plant evolution, especially with regard to reproductive structures. Here, we have sought to take a step in bridging the divide between genetic data and critical fields such as paleobotany and systematics. We discuss the evidence for several evolutionarily important interpretations, including the possibility that ovules represent meristematic axes with their own type of lateral determinate organs (integuments) and a model that considers carpels as analogs of complex leaves. In addition, we highlight the aspects of reproductive development that are likely to be highly labile and homoplastic, factors that have major implications for the understanding of seed plant relationships. Although these hypotheses may suggest that some long-standing interpretations are misleading, they also open up whole new avenues for comparative study and suggest concrete best practices for evolutionary analyses of development. 
540 |a © 2012 New Phytologist Trust 
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650 4 |a Biological sciences  |x Biology  |x Botany  |x Plants 
650 4 |a Biological sciences  |x Biology  |x Anatomy  |x Integumentary system  |x Integument 
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