Laboratory of Microbiology, Institute of Aquatic Ecology, University of Girona, Campus Montilivi, Girona, Spain.
Antonie Van Leeuwenhoek. 2010 May;97(4):419-31. doi: 10.1007/s10482-010-9420-x. Epub 2010 Feb 24.
The taxonomic significance of salt tolerance or requirements in green sulfur bacteria has been analyzed with environmental populations and enrichment cultures from several saline systems (inland and coastal water bodies) with different salinities (salt composition and concentration). Novel phylotypes of green sulfur bacteria have been found in hypersaline and brackish environments and 16S rRNA gene sequence analysis affiliated them into phylogenetic groups in which neither halotolerant nor halophilic species have been known to date. Therefore, salt tolerance does not seem to be restricted to members of any specific subgroup but is widespread among all the different phylogenetic branches of the green sulfur bacteria group, and closely-related phylotypes can have dissimilar salt tolerance capacities. Thus the phenotypic characteristics and phylogenetic structure of the green sulfur bacteria present some incongruities. Phenotypic traits should be studied further in order to determine the ecophysiological features of green sulfur bacteria phylotypes.
已经对来自不同盐度（盐成分和浓度）的几个盐沼系统（内陆和沿海水体）的环境种群和富集培养物进行了耐盐性或盐度要求的分类学意义分析。在高盐和半咸水环境中发现了新型绿硫细菌的系统发育型，16S rRNA 基因序列分析将它们归入尚未发现耐盐或嗜盐种的系统发育群中。因此，耐盐性似乎不仅限于任何特定亚群的成员，而是广泛存在于绿硫细菌组的所有不同系统发育分支中，密切相关的系统发育型可能具有不同的耐盐能力。因此，绿硫细菌的表型特征和系统发育结构存在一些不一致。为了确定绿硫细菌系统发育型的生态生理特征，应该进一步研究表型特征。
