Objectif "The High-Altitude Andean Lakes (HAAL) in the South American Puna-High Andes” are an almost unexplored ecosystem of shallow lakes at altitudes from 3,000 to 6,000 m above sea level. Although exposed to a broad range of extreme conditions they harbour an abundant microbial biodiversity that thrive in environmental conditions of high resemblance to those present in Earth`s early atmosphere. As part of our team in Argentina I have investigated this wide-ranging diversity by culturable and non-culturable methods: so far we have assembled a collection of 200 extremophilic strains from shallow waters, sediments, flamingo faeces and even stromatolites (the only modern stromatolite-ecosystem on Earth recorded at such hostile environments!).The HAAL are clearly conditioned by the high intensity of UV irradiation - in addition to further extreme conditions (e.g. hypersalinity, drastic temperature changes, desiccation, high pH). The rich microbial diversity found in these lakes points to the presence of outstandingly active DNA repair systems - topics of high interest for colleagues worldwide investigating biomass for energy research. Unfortunately our scientific methods are limited - and thus I would like to use the expertise and excellent equipment at the host institute to investigate extensively the strain resistance mechanisms towards UV. These studies on indigenous extremophiles will provide important information about early life – but clearly are of biotechnological and astrobiology interest too.The research will focus on screening and molecular analyses of blue-light driven enzymatic activities such as photolyases involved in DNA-repairing systems - and in particular from the HAAL stromatolite-ecosystems. Their further overexpression and functional study will lead to their photochemical characterization and will highlight the potential of these microbial communities as valuable sources of novel bacteria and bio-molecules of biotechnology interest." Champ scientifique natural sciencesbiological sciencesmicrobiologybacteriologynatural sciencesbiological sciencesgeneticsDNAnatural sciencesbiological sciencesbiochemistrybiomoleculesnatural sciencesbiological sciencesecologyecosystemsnatural sciencesmathematicspure mathematicsmathematical analysisfunctional analysis Programme(s) FP7-PEOPLE - Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Thème(s) FP7-PEOPLE-2010-IIF - Marie Curie Action: "International Incoming Fellowships" Appel à propositions FP7-PEOPLE-2010-IIF Voir d’autres projets de cet appel Régime de financement MC-IIFR - International incoming fellowships (Return phase) Coordinateur CONSEJO NACIONAL DE INVESTIGACIONES CIENTIFICAS Y TECNICAS (CONICET) Contribution de l’UE € 15 000,00 Adresse GODOY CRUZ 2290 C1425FQB Buenos Aires Argentine Voir sur la carte Type d’activité Research Organisations Contact administratif María Delia Robles Terán (Ms.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée
