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Nature Reviews Genetics:植物光合作用的趋同演化(综述)

已有 638 次阅读 2019-6-20 15:11 |个人分类:每日摘要|系统分类:论文交流

The genetics of convergent evolution: insights from plant photosynthesis

First author: Karolina Heyduk; Affiliations: Yale University (耶鲁大学): New Haven, USA

Corresponding author: Karolina Heyduk

The tree of life is resplendent with examples of convergent evolution, whereby distinct species evolve the same trait independently. Many highly convergent adaptations are also complex, which makes their repeated emergence surprising. In plants, the evolutionary history of two carbon concentrating mechanisms (CCMs) — C4 and crassulacean acid metabolism (CAM) photosynthesis — presents such a paradox. Both of these modifications of ancestral C3 photosynthesis require the integration of multiple anatomical and biochemical components, yet together they have evolved more than one hundred times. The presence of CCM enzymes in all plants suggests that a rudimentary CCM might emerge via relatively few genetic changes in potentiated lineages. Here, we propose that many of the complexities often associated with C4 and CAM photosynthesis may have evolved during a post-emergence optimization phase. The ongoing development of new model clades for young, emerging CCMs is enabling the comparative studies needed to test these ideas.



通讯:Karolina Heyduk (https://eeb.yale.edu/people/postdoctoral-and-research-appointments/karolina-heyduk)


doi: https://doi.org/10.1038/s41477-019-0437-5

Journal: Nature Reviews Genetics

Published date: March 18, 2019



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