Microbialites show a distinct cyanobacterial phylogenetic structure and functional redundancy in Bacalar lagoon and Cenote Azul sinkhole, Yucatan Peninsula, Mexico
Por:
Aguila, B., Yanez-Montalvo, A., Mercado-Juarez, R. A., Montejano, G. A., Becerra-Absalon, I, Falcon, I, L.
Publicada:
14 may 2022
Resumen:
Cyanobacterial components of microbialites from two geographically close
systems, the Bacalar lagoon (BL) and the Cenote Azul sinkhole (CA) in
Quintana Roo, Mexico, were characterized. BL and CA systems were studied
along a longitudinal gradient (north to south) and a depth gradient
(5-30 m), respectively. Microscopic observations, 16S rRNA amplicon
sequencing, and shotgun metagenomics were used to characterize
Cyanobacteria. Both systems showed similar metabolic/functional profiles
but harbored completely different cyanobacterial taxa. BL was dominated
by Nostocales, including a population of previously undescribed Chakia
sp., while CA was dominated by an unknown taxon of Chroococcales,
comprising 70% of relative abundance through all depths. Interestingly,
cyanobacterial assemblages in microbialites exhibited phylogenetic
overdispersion in most of the BL sites, while CA sites exhibited
phylogenetic clustering, these differences were attributed to
depth/light conditions and possibly different times of geological
formation for BL and CA systems.
This manuscript describes cyanobacterial taxonomic and functional
diversity within microbialites in BL and the CA sinkhole Quintana Roo,
Mexico.
Filiaciones:
Aguila, B.:
Falcon, L
Posgrad Ciencias Biolog, Unidad Posgrado, Posgrado,Edificio A,1 Piso,Circuito Posgrados CU, Coyoacan 04510, Mexico
Yanez-Montalvo, A.:
El Colegio Frontera Unidad Chetumal, Av Centenario Km 5 5, Chetmal, Quintana Roo 77014, Mexico
Mercado-Juarez, R. A.:
Falcon, L
Posgrad Ciencias Biolog, Unidad Posgrado, Posgrado,Edificio A,1 Piso,Circuito Posgrados CU, Coyoacan 04510, Mexico
Montejano, G. A.:
UNAM, Fac Ciencias, Lab Ficol, Av Univ 3000, CdMx 04510, Mexico
Becerra-Absalon, I:
UNAM, Fac Ciencias, Lab Ficol, Av Univ 3000, CdMx 04510, Mexico
|