An Evaluation of Four Phylogenetic Markers in <Emphasis Type="Italic">Nostoc</Emphasis>: Implications for Cyanobacterial Phylogenetic Studies at the Intrageneric Level |
| |
Authors: | D Han Y Fan Z Hu |
| |
Institution: | (1) State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China;(2) Graduate School, Chinese Academy of Sciences, Beijing, 100039, China |
| |
Abstract: | The success of some phylogenetic markers in cyanobacteria owes to the design of cyanobacteria-specific primers, but a few
studies have directly investigated the evolution “behavior” of the loci. In this study, we performed a case study in Nostoc to evaluate rpoC1, hetR, rbcLX, and 16S rRNA–tRNAIle–tRNAAla-23S rRNA internal transcribed spacer (ITS) as phylogenetic markers. The results indicated that the gene trees of these loci
are not congruent with the phylogeny based on 16S rRNA gene. The mechanisms contributing to the incongruence include randomized
variation and recombination. As the results suggested, one should be careful to choose the molecular markers for phylogenetic
reconstruction at the intrageneric level in cyanobacteria. |
| |
Keywords: | |
本文献已被 PubMed SpringerLink 等数据库收录! |
|