Biologia 65/6: 997—1003, 2010 Section Botany DOI: 10.2478/s11756-010-0105-8 Molecular phylogeny of Ranunculaceae based on rbc L sequences Ying-fan Cai1*†, Sheng-wei Li2,MinChen2,Ming-fengJiang2†,YiLiu1, Yong-fang Xie1, Quan Sun1,Huai-zhongJiang1,Neng-wenYin1,LingWang1,RuiZhang1, Cheng-lin Huang1 &KairongLei3 1Chongqing University of Posts and Telecommunications, Chongqing 400065, People’s Republic of China; e-mail:
[email protected] 2Southwest University for Nationalities, Chengdu 610041, People’s Republic of China 3Chongqing Key Laboratory of Adversity Agriculture, Chongqing 401329,People’s Republic of China Abstract: A phylogenetic tree was constructed by sequencing rbcL genes of 33 species representing 19 genera of Ranuncu- laceae, and three related species, Mahonia bealei, Mahonia fortunei and Nandina domestica. The results showed that the rbcL sequences of these Ranunculaceae range from 1,346 bp to 1,393 bp. The results based on the phylogenetic tree indi- cated that Caltha and Trol lius should not be put in the same tribe, and a close relationship betweenAdonis and Trol lius is supported by our research, while Aquilegia should be in Thalictroideae. In combination with the morphological and chemical evidence, the generic classification of Ranunculaceae should be revised into five subfamilies: Hydrastidoideae, Coptidoideae, Helleboroideae, Thalictroideae and Ranunculoideae. We demonstrate that the rbcL gene is of great value for investigating generic to subfamilial relationships in Ranunculaceae. Key words: phylogeny; Ranunculaceae; rbcL Abbreviations: rbcL, ribulose-1,5-bisphosphate carboxylase/oxygenase; IPTG, isopropyl β-D-1-thiogalactopyranoside; X- Gal, 5-bromo-4-chloro-3-indolyl-beta-D-galactopyranoside Introduction boroideae, Coptidoideae and Isopyroideae.