Geomicrobiology of the Rincon de Parangueo maar crater: Exploring the link between an evolving extreme environment and its potential metabolic diversity
Por:
Sanchez-Sanchez, Janet, Cerca, Mariano, Moguel, Barbara B., Muñoz-Velasco I., Alcantara-Hernandez, Rocio J., Carreon-Freyre, Dora, Levresse, Gilles
Publicada:
1 nov 2023
Ahead of Print:
1 oct 2023
Categoría:
Aquatic science
Resumen:
Rincon de Parangueo (RP) is a Quaternary maar crater located in the
Michoacan-Guanajuato Volcanic Field in central Mexico. Like other
volcanic craters in the region, the central part was occupied by an
endorheic lacustrine system. As a consequence of extensive groundwater
extraction, the perennial lake started a gradual desiccation process and
now the remnant ponds host a highly saline-alkaline ecosystem. The
stratigraphic record indicates an exceptional and long-term
sedimentation of carbonate microbialites. Previous studies based on the
16S rRNA gene have shown that microbial communities have a widespread
presence in the crater at the microbialites, the remaining saline ponds,
superficial soils and below the surface. To understand the possible role
of the microbial communities that generate these biogeological
structures, novel analytical methods to resolve the amplicon datasets
and their microbial metabolic potential were used.We describe in detail
the relationship between the microbial communities, the evolution of
physicochemical parameters, and carbonate morphology, in four
micro-environments. A 16S rRNA gene sequencing dataset from previous
publications was re-analysed using an ASV-based bioinformatic pipeline
to identify new insights into the microbial assemblage. Finally, a
taxon-based metabolic profile was used to predict the potential
metabolic contribution of the prokaryotic community.Results indicated a
refinement in terms of community composition using the ASV-based
bioinformatic methods. Functional profiling through 16S rRNA gene-based
analysis suggested metabolisms associated with carbonate precipitation,
indicating a broad potential for microbially mediated carbonate
precipitation (e.g., carbon fixation and photosynthesis). The
possibility of biogenic methane gas production by methanogenic
microorganisms was recognised, supporting the estimated flow of methane
on the surface soils.The lacustrine evolution over the last years and
the extreme physicochemical characteristics of RP have an impact on the
microbial community structure. Prokaryotic community and metabolic
potential results from RP coincide with the diversity and abundance of
microbial communities and functional metabolisms reported from other
microbialite-forming lakes along the Trans Mexican Volcanic Belt. The
identification of important possible phylotypes involved in carbonate
precipitation might be an important factor in considering RP
microbialites as active calcifying entities.These findings provide novel
insights into the potential key role of metabolic pathways driving the
process of carbonate precipitation inside RP and evidence of its
importance as a microbial biodiversity hotspot in Mexico.
Filiaciones:
Sanchez-Sanchez, Janet:
Posgrado en Ciencias de la Tierra, Centro de Geociencias, Universidad Nacional Autónoma de México, Querétaro, Juriquilla, Mexico
Centro de Geociencias, Universidad Nacional Autónoma de México, Querétaro, Juriquilla, Mexico
Univ Nacl Autonoma Mexico, Ctr Geociencias, Posgrad Ciencias Tierra, Juriquilla, Queretaro, Mexico
Cerca, Mariano:
Centro de Geociencias, Universidad Nacional Autónoma de México, Querétaro, Juriquilla, Mexico
Univ Nacl Autonoma Mexico, Ctr Geociencias, Juriquilla Queretaro, Mexico
Univ Nacl Autonoma Mexico, Ctr Geociencias, Blvd Juriquilla,3001, Juriquilla 76230, Queretaro, Mexico
Moguel, Barbara B.:
Centro de Geociencias, Universidad Nacional Autónoma de México, Querétaro, Juriquilla, Mexico
Laboratorio Internacional de Investigación sobre el Genoma Humano, Universidad Nacional Autónoma de México, Santiago de Querétaro, Mexico
Univ Nacl Autonoma Mexico, Ctr Geociencias, Juriquilla Queretaro, Mexico
Univ Nacl Autonoma Mexico, Lab Int Invest Genoma Humano, Santiago De Queretaro, Mexico
Muñoz-Velasco I.:
Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
Alcantara-Hernandez, Rocio J.:
Instituto de Geología, UNAM, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
Univ Nacl Autonoma Mexico, Inst Geol, UNAM, Ciudad De Mexico, Mexico
Carreon-Freyre, Dora:
Centro de Geociencias, Universidad Nacional Autónoma de México, Querétaro, Juriquilla, Mexico
Univ Nacl Autonoma Mexico, Ctr Geociencias, Juriquilla Queretaro, Mexico
Levresse, Gilles:
Centro de Geociencias, Universidad Nacional Autónoma de México, Querétaro, Juriquilla, Mexico
Univ Nacl Autonoma Mexico, Ctr Geociencias, Juriquilla Queretaro, Mexico
Univ Nacl Autonoma Mexico, Fac Ciencias, Ciudad De Mexico, Mexico
hybrid, Hybrid Gold
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