The molecular phylogeny of the Lardizabalaceae is reconstructed based on chloroplast trnL-F sequences alone and combined trnL-F and rbcL sequences. The phylogenetic topologies agree well with Qin‘s and Takhtajan‘s tribal classification in both analyses. Decaisneae and Sinofranchetieae are basal clades in the phylogenetic trees and external to all other taxa in the family. Lardizabaleae consisting of Boquila and Lardizabala are well supported in both trnL-F (100%) analysis and trnL-F and rbcL combined analysis (99%). Tribe Akebieae are strongly supported by a bootstrap value of 100% in both trnL-F analysis and trnL F and rbcL combined analysis. However, the new genus Archakebia is nested within the genus Akebia in the trnL-F trees. In the combined trees, Archakebia is sister to Akebia with high bootstrap support. The inter relationships among three closely related genera Parvatia, Holboellia and Stauntonia are still problematic. P. brunoniana ssp. elliptica is sister to H. latifolia in both analyses with low bootstrap support. H. parviflora is nested within the Stauntonia and sister to S. cavalerieana. Therefore, these three genera of tribe Akebieae may not be monophylytic and their generic boundary and delimitation need to be further studied, by exploring more molecular data, together with more morphological characters.
基于叶绿体Trn L-F 序列和联合数据分析木通科的分子系统发育
王 峰1,2 李德铢1* 杨俊波1
（1. 中国科学院昆明植物研究所生物多样性与生物地理学开放实验室，昆明650204；2. 西北师范大学学报编辑部，兰州730070）
摘要： 基于叶绿体 trn L-F 序列单独分析以及 trn L-F 和 rbc L 序列联合分析重建了木通科的分子系统发育.本研究的系统发育拓扑结构与覃海宁和塔赫他间的族划分系统非常一致.猫儿屎族和串果藤族在系统发育树上位于本科的基部.由分布于南美的勃奎拉藤属和拉氏藤属组成的拉氏藤族得到了 trn L-F 序列分析(100％)和联合序列分析(99％)的很好支持.木通族在两个分析里都得到了100％的靴带支持率.新建立的长萼木通属在 trn L-F 树上嵌套在木通属内;然而,在联合分析的树上,它与木通属形成姐妹群并得到很高的支持率.在系统发育上关系密切的3个属: 牛藤果属、八月瓜属和野木瓜属之间的关系仍未解决.牛藤果与八月瓜在两个分析里都形成姐妹群,但支持率低.小花鹰爪枫嵌套在野木瓜属内,并与西南野木瓜形成姐妹群.木通族内这3个属可能都不是单系,它们的属间界限和属的界定需要更多的分子和形态数据的进一步研究
关键词： 木通科；分子系统发育；trn L-F序列；rbcL 序列
全 文 ：