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Título: | Association of Acidotolerant Cyanobacteria to Microbial Mats below pH 1 in Acidic Mineral Precipitates in Río Tinto River in Spain |
Autor: | Gómez, Felipe; Rodríguez, Nuria CSIC ORCID; Rodríguez-Manfredi, José Antonio CSIC ORCID; Escudero, Cristina; Carrasco-Ropero, Ignacio; Martínez, José M.; Ferrari, Marco; De Angelis, Simone; Frigeri, Alessandro; Fernández-Sampedro, M. Teresa CSIC; Amils, Ricardo CSIC ORCID | Palabras clave: | Extremophiles Acidophiles Cyanobacteria Natrojarosite Endolithic ecosystems Earth analogues Astrobiology |
Fecha de publicación: | abr-2024 | Editor: | Multidisciplinary Digital Publishing Institute | Citación: | Microorganisms 12(4): 829 (2024) | Resumen: | This report describes acidic microbial mats containing cyanobacteria that are strongly associated to precipitated minerals in the source area of Río Tinto. Río Tinto (Huelva, Southwestern Spain) is an extreme acidic environment where iron and sulfur cycles play a fundamental role in sustaining the extremely low pH and the high concentration of heavy metals, while maintaining a high level of microbial diversity. These multi-layered mineral deposits are stable all year round and are characterized by a succession of thick greenish-blue and brownish layers mainly composed of natrojarosite. The temperature and absorbance above and below the mineral precipitates were followed and stable conditions were detected inside the mineral precipitates. Different methodologies, scanning and transmission electron microscopy, immunological detection, fluorescence in situ hybridization, and metagenomic analysis were used to describe the biodiversity existing in these microbial mats, demonstrating, for the first time, the existence of acid-tolerant cyanobacteria in a hyperacidic environment of below pH 1. Up to 0.46% of the classified sequences belong to cyanobacterial microorganisms, and 1.47% of the aligned DNA reads belong to the Cyanobacteria clade. | Descripción: | © 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). | Versión del editor: | https://doi.org/10.3390/microorganisms12040829 | URI: | http://hdl.handle.net/10261/355819 | DOI: | 10.3390/microorganisms12040829 | E-ISSN: | 2076-2607 |
Aparece en las colecciones: | (CAB) Artículos (CBM) Artículos |
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