Institut für Meereswissenschaften IFM-GEOMAR an der Universität Kiel, Düsternbrooker Weg 20, Kiel, Germany.
Photosynth Res. 2010 Jun;104(2-3):123-36. doi: 10.1007/s11120-009-9510-7. Epub 2010 Jan 22.
Based on phylogenetic relationships found according to gene sequences of the 16S rRNA and the FMO (Fenna-Matthews-Olson protein) genes, and supported by the G + C content of the DNA and sequence signatures, the strains and species of green sulfur bacteria have been grouped into a phylogenetic system. Since properties used previously for classification such as cell morphology, photosynthetic pigments and substrate utilization do not conform with their phylogeny, a reassignment of strains to species, and a rearrangement among the species were necessary. The comparison of the traditional classification system of these bacteria with their phylogenetic relationship yielded a confusing picture. As a consequence of this rearrangement, species of the green sulfur bacteria were classified into the genera Chlorobium, Chlorobaculum, Prosthecochloris, and Chloroherpeton. Strains were assigned to the species according to their phylogenetic similarity and a number of new combinations, and new species were defined. New isolates and also environmental gene sequences fit very well into the established groups or may form new species, some of which have been described and others are awaiting their description. New strains and available gene sequences are included into the phylogenetic system, and a taxonomic classification on the species level is proposed.
根据 16S rRNA 和 FMO（Fenna-Matthews-Olson 蛋白）基因序列的系统发育关系，并结合 DNA 的 G+C 含量和序列特征，对绿硫细菌的菌株和种进行了分类。由于以前用于分类的特性，如细胞形态、光合色素和底物利用，与它们的系统发育不一致，因此有必要对菌株进行种的重新分配和种间的重新排列。这些细菌的传统分类系统与它们的系统发育关系的比较产生了一个混乱的画面。由于这种重新排列，绿硫细菌的种被分类为绿杆菌属、绿杆菌属、原绿球藻属和绿杆菌属。菌株根据其系统发育相似性和一些新的组合被分配到种中，并定义了新的种。新的分离株和环境基因序列非常适合已建立的群组，或者可能形成新的种，其中一些已经被描述，而另一些则在等待描述。新的菌株和可用的基因序列被纳入系统发育系统，并提出了一个基于种的分类学分类。
