Diversity of halophilic archaea in the crystallizers of an Adriatic solar saltern

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• 作者：Lejla Pa&#x161 ; ić ; Sergio Galá ; n Bartual ; Nata&#x161 ; a Poklar Ulrih ; Miklavž ; Grabnar and Blagajana Herzog Velikonja
• 关键词：16S rRNA ; Bacteriorhodopsin ; Haloarchaea ; Saltern ; Hypersaline ; Halophiles
• 刊名：FEMS Microbiology Ecology
• 出版年：2005
• 期刊代码：33_01686496
• 类别：imm
• 出版时间：2005
• 卷：54
• 期：3
• 页码：491-498
• 文件大小：434 K

摘要

Haloarchaeal diversity in the crystallizers of Adriatic Sečovlje salterns was investigated using gene fragments encoding 16S rRNA and bacteriorhodopsin as molecular markers. Screening of 180 clones from five gene libraries constructed for each gene targeted revealed 15 different 16S rRNA and 10 different bacteriorhodopsin phylotypes, indicating higher haloarchaeal diversity than previously reported in such hypersaline environments. Furthermore, results of rarefaction analysis indicated that analysis of an increasing number of clones would have revealed additional diversity. Finally, most sequences from the crystallizers grouped within the Halorubrum branch, whereas square-shaped ‘Haloquadratum’ relatives, repeatedly reported to dominate crystallizer communities, were rare. Presence of such special and diverse haloarchaeal community could be attributed to the Sečovlje salterns rare continuous short-cycling salt production mechanism.