期刊
NEW PHYTOLOGIST
卷 228, 期 6, 页码 1741-1747出版社
WILEY
DOI: 10.1111/nph.16294
关键词
angiosperm; Cenozoic; diversification rate; evolutionary radiation; functional trait; gymnosperm; homoplasy; transition rate
The fact that angiosperms are so species-rich and ecologically diverse - Darwin's second abominable mystery - could be explained by their ability to 'reinvent' themselves by evolving functional traits repeatedly over time, space and taxonomic clades. These trait innovations may facilitate adaptation and increase diversification rates. In this article, I quantify this 'trait flexibility' by reviewing the literature on trait transition rates and trait-dependent diversification rates in angiosperms and their extant sister clade, acrogymnosperms. I show that angiosperms indeed evolved elevated trait transition and trait-dependent diversification rates compared to gymnosperms, and rates are highest within species-rich angiosperm orders (e.g. Fabales, Lamiales). The (genetic) ability of certain angiosperm lineages to repeatedly evolve adaptive traits may have facilitated sustained high net diversification resulting from numerous episodic radiations.
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