Open AccessMolecular phylogenetic relationships and implications for the circumscription of C olchicaceae ( L iliales)
Author(s) -
Nguyen Thi P. A.,
Kim Jung Sung,
Kim JooHwan
Publication year - 2013
Publication title -
botanical journal of the linnean society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.872
H-Index - 68
eISSN - 1095-8339
pISSN - 0024-4074
DOI - 10.1111/boj.12037
Subject(s) - biology , circumscription , sensu , monophyly , phylogenetic tree , sister group , botany , clade , evolutionary biology , zoology , genus , genetics , gene , computer science , artificial intelligence
C olchicaceae ( L iliales) comprise c . 250 species and 15–21 genera of rhizomatous or cormous perennials and are distributed through temperate and tropical A frica, E urope, A sia and N orth A merica. They have been traditionally divided into two subfamilies, but this division is still unclear and the phylogenetic relationships among members of the family and the sister relationships of the family have been debated. Moreover, it is uncertain whether the expanded circumscription of C olchicum , G loriosa and W urmbea to include A ndrocymbium , L ittonia and O nixotis plus N eodregea , respectively, is unavoidable. In this study, sequences of three plastid genes, atpB , matK and rbcL , were analysed to reconstruct phylogenetic relationships in C olchicaceae. The matK region was the most variable and provided the most potentially parsimony‐informative sites. We also conducted molecular phylogenetic analyses using the combined data with sequences for three non‐coding regions generated by V innersten and R eeves. Our results strongly support the monophyly of C olchicaceae and the redefined circumscription to include two subfamilies, W urmbeoideae and U vularioideae. The U vularia‐ D isporum clade, i.e. U vularioideae, is sister to the rest of C olchicaceae and differentiated from B urchardia , previously suggested to be sister to the rest of C olchicaceae. In our analysis, B urchardia is placed in W urmbeoideae. A close relationship between T ripladenia and S chelhammera was strongly supported and these are transferred to W urmbeoideae from U vularioideae. The six tribes sensu V innersten and M anning were shown to be monophyletic. Our results support the expanded circumscription of Colchicum (including Androcymbium ) and G loriosa (including L ittonia ), but the circumscription of W urmbea and related genera requires further study. © 2013 The Linnean Society of London, Botanical Journal of the Linnean Society , 2013, 172 , 255–269.