基于rpl16序列的中国野牡丹属植物分子系统关系初探  

Preliminary study on molecular phylogenetic relationship of Melastoma(Melastomataceae)based on rpl16 sequence

作　　者：白岳峰 李淑娴[1] 江鸣涛 吴沙沙[1] 翟俊文[1] 彭东辉[1] 

机构地区：[1]福建农林大学园林学院,福建福州350002

出　　处：《广东农业科学》2015年第13期135-139,共5页Guangdong Agricultural Sciences

基　　金：福建省自然科学基金(2015J01085)

摘　　要：针对目前中国原产野牡丹属植物系统关系存在的争议,采用叶绿体基因上的rpl16序列,以野牡丹科野牡丹属之外的3个属4种植物为外类群,对中国野牡丹属植物进行了分子系统关系研究。结果表明,rpl16序列在野牡丹属植物中没有足够的变异位点,最大简约法(Maximum parsimony,MP)构建的分子系统树中,地菍(Melastoma dodecandrum)形成单独的一支,贝叶斯分析(Bayesian Inference,BI)构建的分子系统树中,整个野牡丹属植物形成一支;两种方法构建的分子系统树中,野牡丹科同一个属的植物都可以形成单独的分支。因此,rpl16序列并不适合野牡丹属植物的分子系统关系研究,可能比较适合野牡丹科植物属间的分子系统关系研究。In order to figure out the systematic relationship of Melastoma plants native to China, which has been in debate for long, cp-rpl16 sequence was used to study the molecular phylogenetic relationship of Melastoma using 4 species from 3 genera of Melastomataceae as outgroup. The results showed that there was not enough variation sites on rpl16 sequence in the plants studied. In the molecular phylogenetic tree constructed by Maximum parsimony, M. dodecandrum was divided into a separate clade. In the molecular phylogenetic tree constructed by Bayesian Inference, all species of genus Melastoma were clustered into one clade. Every genus of Melastomataceae could form a separate clade in both molecular phylogenetic trees. To sum up, rpl16 sequence is not proper for the molecular phylogenetic relationship study among species of Melastoma, but maybe it is suitable for the molecular phylogenetic relationship study among genera of Melastomataceae.

关 键 词：野牡丹属植物 rpl16序列 分子系统关系 

分 类 号：Q349.13[生物学—遗传学]