Richness and metallo-tolerance of cultivable fungi recovered from three high altitude glaciers from Citlaltépetl and Iztaccíhuatl volcanoes (Mexico)
| Autor: | Elisa Irma Fernández-Tellez, Miguel Angel Ramos-López, Victor Manuel Bautista-de Lucio, Rosa Paulina Calvillo-Medina, Juan Campos-Guillén, Efraín Escudero-Leyva, Luis Barba-Escoto, Nina Gunde-Cimerman, Ariadna Andrea Medina-Tellez |
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| Rok vydání: | 2020 |
| Předmět: |
Mycobiota
Aureobasidium Microbiology Volcanic glaciers 03 medical and health sciences Botany Partial identification Ice Cover Psychrophile Mexico 030304 developmental biology 0303 health sciences biology 030306 microbiology Altitude fungi Fungi General Medicine Sordariomycetes biology.organism_classification Alternaria Biodegradation Environmental Penicillium Molecular Medicine Species richness Psychrotolerant fungal isolates Heavy metal tolerance Mycobiome Cladosporium |
| Zdroj: | Extremophiles 24(4), pp.625-636 Kérwá Universidad de Costa Rica instacron:UCR |
| ISSN: | 1433-4909 1431-0651 |
| Popis: | In Mexico little is known about high-altitude glacial psychrotolerant or psychrophilic fungal species, with most glacial fungi isolated from polar environments or Alpine glaciers. It has been documented that some of these species may play an important role in bioremediation of contaminated environments with heavy metals. In the present study, 75 fungi were isolated from glaciers in Citlaltépetl (5675 masl) and Iztaccíhuatl (5286 masl) volcanoes. Combining morphological characteristics and molecular methods, based on ITS rDNA, 38 fungi were partially identified to genus level, 35 belonging to Ascomycota and three to Mucoromycota. The most abundant genera were Cladosporium, followed by Alternaria and Sordariomycetes order. All isolated fungi were psychrotolerant, pigmented and resistant to different concentrations of Cr(III) and Pb(II), while none tolerated Hg(II). Fungi most tolerant to Cr(III) and Pb(II) belong to the genera Stemphylium, Cladosporium and Penicillium and to a lesser extent Aureobasidium and Sordariomycetes. To our knowledge, this is the first report on cultivable mycobiota richness and their Cr and Pb tolerance. The results open new research possibilities about fungal diversity and heavy metals myco-remediation. Extremophilic fungal communities should be further investigated before global warming causes permanent changes and we miss the opportunity to describe these sites in Mexico UCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Básicas::Centro de Investigaciones en Productos Naturales (CIPRONA) |
| Databáze: | OpenAIRE |
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