褐梅衣类地衣的研究简史及其属之间的区别

The Research Progress of Parmelioid Lichen and Identification between Its Genus

褐梅衣类(Parmelioid lichen)地衣为叶状地衣中的重要类群,为世界广泛分布,全世界有67种,而我国仅报道了该类地衣的30个种。本文初步总结褐梅衣类地衣研究进展和褐梅衣类地衣中四个属的形态学和化学成分存在的差异,同时借助分子系统学研究手段,解决属之间进化距离关系。本论文选取NCBI数据库中分布于不同地区的褐梅衣类地衣,即:褐衣属的3个种、伊氏叶属的4个种、黑尔衣属的4个种和山地衣属的5个种的ITS基因序列,利用最大似然法(ML)构建该三个属之间的系统发育关系。系统发育关系所显示的结果与传统形态学分类方法基本一致。

Parmelioid lichen is an important group in Parmeliaceae, widely distributed in the world. There are 67 species of Parmelioid lichen in the world, and only 30 species are reported in China. This paper summarizes the research progress of the Parmelioid lichen and probes into the difference of the morphological and chemical components of the four genus in the Parmelioid lichen;at the same time, the phylogenetic relationship about the Parmelioid lichen with the help of molecular phylogeny methods was studied. In this paper, we select the Parmelioid lichen distributed in dif-ferent regions in NCBI database, namely, three species of Melanelia Essl., four species of Melanelixia, four species of Melanohalea and five species of Montanelia. The phylogenetic research of species is studied by ITS sequences and using ML analyses. Our phylogenetic analyses support traditional genera delimitation based on morphological and chemical traits in most but not all cases.