Fungal diversity in sediments of the eastern tropical Pacific oxygen minimum zone revealed by metabarcoding


Por: Posadas J., Velez P., Pajares S., Gasca-Pineda J., Espinosa-Asuar L.

Publicada: 1 ene 2024
Categoría: Multidisciplinary

Resumen:
Oxygen minimum zones (OMZ) represent ~8% of the ocean, with the Pacific as the largest and top expanding area. These regions influence marine ecosystems, promoting anaerobic microbial communities. Nevertheless, only a fraction of microbial diversity has been studied, with fungi being the less explored component. So, herein we analyzed fungal diversity patterns in surface and subsurface sediments along a bathymetric transect using metabarcoding of the ITS1 region in the OMZ of the Mexican Pacific off Mazatlán. We identified 353 amplicon sequence variants (ASV), within the Ascomycota, Basidiomycota, and Rozellomycota. Spatial patterns evidenced higher alpha diversity in nearshore and subsurface subsamples, probably due to temporal fluctuations in organic matter inputs. Small-scale heterogeneity characterized the community with the majority of ASV (269 ASV) occurring in a single subsample, hinting at the influence of local biogeochemical conditions. This baseline data evidenced a remarkable fungal diversity presenting high variation along a bathymetric and vertical transects. Copyright: © 2024 Posadas et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Filiaciones:
Posadas J.:
 Posgrado en Ciencias del Mar y Limnología, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Mexico City, Mexico

 Departamento de Botánica, Instituto de Biología, Universidad Nacional Autónoma de México, Mexico City, Mexico

Velez P.:
 Departamento de Botánica, Instituto de Biología, Universidad Nacional Autónoma de México, Mexico City, Mexico

Pajares S.:
 Unidad Académica de Ecología y Biodiversidad Acuática, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Mexico City, Mexico

Gasca-Pineda J.:
 Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional Autónoma de México, Mexico City, Mexico

 Instituto de Ecología, Universidad Nacional Autónoma de México, Mexico City, Mexico

Espinosa-Asuar L.:
 Instituto de Ecología, Universidad Nacional Autónoma de México, Mexico City, Mexico
ISSN: 19326203
Editorial
PUBLIC LIBRARY SCIENCE, 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA, Estados Unidos America
Tipo de documento: Article
Volumen: 19 Número: 5
Páginas: 301605
WOS Id: 001245059300063
ID de PubMed: 38739592
imagen gold, All Open Access; Gold Open Access

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