Evolutionary Events in Lilium (Including Nomocharis, Liliaceae
Molecular Phylogenetics and Evolution 68 (2013) 443–460 Contents lists available at SciVerse ScienceDirect Molecular Phylogenetics and Evolution journal homepage: www.elsevier.com/locate/ympev Evolutionary events in Lilium (including Nomocharis, Liliaceae) are temporally correlated with orogenies of the Q–T plateau and the Hengduan Mountains ⇑ Yun-Dong Gao a,b, AJ Harris c, Song-Dong Zhou a, Xing-Jin He a, a Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Science, Sichuan University, Chengdu 610065, China b Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China c Department of Botany, Oklahoma State University, Oklahoma 74078-3013, USA article info abstract Article history: The Hengduan Mountains (H-D Mountains) in China flank the eastern edge of the Qinghai–Tibet Plateau Received 21 July 2012 (Q–T Plateau) and are a center of great temperate plant diversity. The geological history and complex Revised 24 April 2013 topography of these mountains may have prompted the in situ evolution of many diverse and narrowly Accepted 26 April 2013 endemic species. Despite the importance of the H-D Mountains to biodiversity, many uncertainties Available online 9 May 2013 remain regarding the timing and tempo of their uplift. One hypothesis is that the Q–T Plateau underwent a final, rapid phase of uplift 8–7 million years ago (Mya) and that the H-D Mountains orogeny was a sep- Keywords: arate event occurring 4–3 Mya. To evaluate this hypothesis, we performed phylogenetic, biogeographic, Hengduan Mountains divergence time dating, and diversification rate analyses of the horticulturally important genus Lilium, Lilium–Nomocharis complex Intercontinental dispersal including Nomocharis.
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