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DOI | 10.1002/MBO3.667 | ||||
Año | 2019 | ||||
Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
Salar de Huasco is a high-altitude wetland characterized by a highly diverse microbial life adapted to extreme climatic and environmental conditions. Our study aims to determine active microbial community structure changes within different aquatic sites and its relationship with environmental factors and viruses as potential drivers of diversification in different aquatic areas of this ecosystem. In this study, bacteria and archaea composition (16S rRNA subunit pyrolibraries) and picoplankton and viral abundance were determined at ponds, springs and lagoon sites of the wetland during wet and dry seasons (February and July 2012, respectively). In general, mixosaline waters (1,400-51,000 mu S/cm) usually found in ponds arid lagoon presented higher picoplanktonic abundances compared to freshwater (<800 mu S/cm) spring sites, ranging from 1.07 x 10(5) to 1.83 x 10(7) cells/ml. Viral abundance and viral to picoplankton ratio (VPR) also presented greater values at ponds compared to spring sites, reaching up to 4.78 x 10(8) viruses-like particles and up to 351 for VPR. In general, ponds hold a higher microbial diversity and complexity associated also with the presence of microbial mats compared with water sources or lagoon (Shannon index H' 2.6-3,9 vs. <2.0). A greater richness of archaea was also detected in ponds characterized by functional groups such as known methanogens and ammonia oxidizers, and uncultured groups. In total, our results indicate that among the different aquatic sites of the wetland, ponds presented a great microbial community diversification associated to a higher top-down control by viruses which may influence nutrient and greenhouse gases cycling.
Ord. | Autor | Género | Institución - País |
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1 | Eissler, Y. | - |
Universidad de Valparaíso - Chile
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2 | Galvez, Maria-Jesus | Mujer |
Universidad de Playa Ancha - Chile
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3 | Dorador, Cristina | Mujer |
Universidad de Antofagasta - Chile
Centro de Biotecnología y Bioingeniería - Chile Centre for Biotechnology and Bioengineering - Chile |
4 | HENGST-LOPEZ, MARTHA BRIGITTE | Mujer |
Centro de Biotecnología y Bioingeniería - Chile
Universidad Católica del Norte - Chile Centre for Biotechnology and Bioengineering - Chile |
5 | MOLINA-TRINCADO, VERONICA ANDREA | Mujer |
Universidad de Playa Ancha - Chile
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Fuente |
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Fondo Nacional de Desarrollo Científico y Tecnológico |
Comisión Nacional de Investigación Científica y Tecnológica |
Universidad de Valparaíso |
Universidad Andrés Bello |
Fondo Nacional de Desarrollo CientÃfico y Tecnológico |
Comision Nacional de Investigacion Cientifica y Tecnologica, Chile |
Concurso de Apoyo a la Participacion en Estadias Academicas Cortas |
Laboratorio de la Escuela Veterinaria |
Universidad de ValparaD? |
Comisión Nacional de Investigación CientD?ficya TecnolD?gicaC |
Agradecimiento |
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Comision Nacional de Investigacion Cientifica y Tecnologica, Chile, Grant/Award Number: 1110824, 1140179, 1110953, 1140356 and 1171324; Universidad de Valparaiso, Grant/Award Number: DIUV REG 27/2009; Concurso de Apoyo a la Participacion en Estadias Academicas Cortas, Grant/Award Number: 1876 de 2016 |
We are grateful to A. Undabarrena, H. PeD? an, d D. Tapia for their technical support in the lab, and to all the participants of the field trips. We would like to particularly acknowledge the support given by Pedro and Margarita Luca for their hospitality at Salar de Huasco shelter facilities and Gadiel AlarcD? annd Jaime Guerrero for field support. We also acknowledge the support given in laboratory facilities by Dr. R. Melendez (Laboratorio de BiologD? Marina, UNAB) and Dr. R. Paredes (Laboratorio de la Escuela Veterinaria, UNAB) to V.M. This work was supported by Comisión Nacional de Investigación CientD?ficya TecnolD?gicaC, hile (FONDECYT grant numbers 1110824, 1140179, 1110953, 1140356 and 1171324); Universidad de ValparaD? (sgorant number DIUV REG 27/2009) and Concurso de Apoyo a la ParticipaciD? en EstadD? Aacsadémicas Cortas (grant number R.E. No. 1876 de 2016 to Y.E.). |