info:eu-repo/semantics/article
Biogeographical patterns of bacterial and archaeal communities from distant hypersaline environments
Fecha
2018-03Registro en:
Mora Ruiz, M.del R.; Cifuentes, Ana; Font Verdera, Francisca; Pérez Fernández, César A.; Farias, Maria Eugenia; et al.; Biogeographical patterns of bacterial and archaeal communities from distant hypersaline environments; Elsevier Gmbh; Systematic And Applied Microbiology; 41; 2; 3-2018; 139-150
0723-2020
CONICET Digital
CONICET
Autor
Mora Ruiz, M.del R.
Cifuentes, Ana
Font Verdera, Francisca
Pérez Fernández, César A.
Farias, Maria Eugenia
González, Bernardo V.
Orfila, Alejandro
Rosselló Móra, Ramón
Resumen
Microorganisms are globally distributed but new evidence shows that the microbial structure of their communities can vary due to geographical location and environmental parameters. In this study, 50 samples including brines and sediments from Europe, Spanish-Atlantic and South America were analysed by applying the operational phylogenetic unit (OPU) approach in order to understand whether microbial community structures in hypersaline environments exhibited biogeographical patterns. The fine-tuned identification of approximately 1000 OPUs (almost equivalent to ?species?) using multivariate analysis revealed regionally distinct taxa compositions. This segregation was more diffuse at the genus level and pointed to a phylogenetic and metabolic redundancy at the higher taxa level, where their different species acquired distinct advantages related to the regional physicochemical idiosyncrasies. The presence of previously undescribed groups was also shown in these environments, such as Parcubacteria, or members of Nanohaloarchaeota in anaerobic hypersaline sediments. Finally, an important OPU overlap was observed between anoxic sediments and their overlaying brines, indicating versatile metabolism for the pelagic organisms.