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Título : Extremely halophilic brine community manipulation shows higher robustness of microbiomes inhabiting human-driven solar saltern than naturally driven lake
Autor : Liebana, Raquel; Viver, Tomeu; Ramos-Barbero, Maria Dolores; Bustos-Caparros, Esteban; Urdiain, Mercedes; Lopez, Cristina; Amoozegar, Mohammad Ali; Anton, Josefa; Rossello-Mora, Ramon
Resumen : Hypersaline ecosystems display taxonomically similar assemblages with low diversities and highly dense accompanying viromes. The ecological implications of viral infection on natural microbial populations remain poorly understood, especially at finer scales of diversity. Here, we sought to investigate the influence of changes in environmental physicochemical conditions and viral predation pressure by autochthonous and allochthonous viruses on host dynamics. For this purpose, we transplanted two microbiomes coming from distant hypersaline systems (solar salterns of Es Trenc in Spain and the thalassohaline lake of Aran-Bidgol lake in Iran), by exchanging the cellular fractions with the sterile-filtered accompanying brines with and without the free extracellular virus fraction. The midterm exposure (1 month) of the microbiomes to the new conditions showed that at the supraspecific taxonomic range, the assemblies from the solar saltern brine more strongly resisted the environmental changes and viral predation than that of the lake. The metagenome-assembled genomes (MAGs) analysis revealed an intraspecific transition at the ecotype level, mainly driven by changes in viral predation pressure, by both autochthonous and allochthonous viruses.IMPORTANCEViruses greatly influence succession and diversification of their hosts, yet the effects of viral infection on the ecological dynamics of natural microbial populations remain poorly understood, especially at finer scales of diversity. By manipulating the viral predation pressure by autochthonous and allochthonous viruses, we uncovered potential phage-host interaction, and their important role in structuring the prokaryote community at an ecotype level. Viruses greatly influence succession and diversification of their hosts, yet the effects of viral infection on the ecological dynamics of natural microbial populations remain poorly understood, especially at finer scales of diversity. By manipulating the viral predation pressure by autochthonous and allochthonous viruses, we uncovered potential phage-host interaction, and their important role in structuring the prokaryote community at an ecotype level.
Palabras clave : community assembly; microdiversity; comparative metagenomics; hyperhalophilic microbiomes; community transplant; viral predation pressure; metagenome-assembled genomes; POPULATION GENOMICS; SINGLE-CELL; DIVERSITY; PROTEIN; BACTERIA; VIRUSES; PHYTOPLANKTON; BIOGEOGRAPHY; MECHANISMS; DYNAMICS
Fecha de publicación : 2024
Editorial : AMER SOC MICROBIOLOGY
Tipo de documento: Article
Idioma: 
DOI: 10.1128/msystems.00538-24
URI : http://dspace.azti.es/handle/24689/1909
ISSN : 2379-5077
Patrocinador: Ministerio de Ciencia e Innovacion (MCIN) [PGC2018-096956-B-C41, PGC2018-096956-B-C43, RTC-2017-6405-1, PID2021-126114NB-C42, PID2021-126114NB-C44]
Aparece en las tipos de publicación: Artículos científicos



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