A5031685686- Microbial Community Ecology and Physiology
- Genomics and Phylogenetic Studies
- Arsenic contamination and mitigation
- Microbial Fuel Cells and Bioremediation
- Chromium effects and bioremediation
- Protist diversity and phylogeny
- Selenium in Biological Systems
- Carbon and Quantum Dots Applications
- bioluminescence and chemiluminescence research
- Pharmaceutical and Antibiotic Environmental Impacts
- Nanoparticles: synthesis and applications
- Advanced Proteomics Techniques and Applications
- Aquaculture disease management and microbiota
- Metabolomics and Mass Spectrometry Studies
- Biochemical Analysis and Sensing Techniques
- Quantum Dots Synthesis And Properties
- Chemical Analysis and Environmental Impact
- Marine and coastal ecosystems
- Food Quality and Safety Studies
- Phytochemicals and Antioxidant Activities
- Biocrusts and Microbial Ecology
- Microbial Metabolic Engineering and Bioproduction
- Mine drainage and remediation techniques
- Bacterial biofilms and quorum sensing
- Polar Research and Ecology
Centro de Investigación y Extensión Forestal Andino Patagónico
2022-2024
Consejo Nacional de Investigaciones Científicas y Técnicas
2009-2023
Centro Científico Tecnológico - Tucumán
2022-2023
Planta Piloto de Procesos Industriales Microbiológicos
2008-2019
Universidad Nacional Autónoma de México
2017
Instituto de Ecología
2017
Écologie, Systématique et Évolution
2017
AgroParisTech
2017
Centre National de la Recherche Scientifique
2017
Université Paris-Saclay
2017
Abstract Modern stromatolites thrive only in selected locations the world. Socompa Lake, located Andean plateau at 3570 masl, is one of numerous extreme microbial ecosystems described over recent years. Extreme environmental conditions include hypersalinity, high UV incidence, and arsenic content, among others. After Socompa’s stromatolite communities were analysed by metagenomic DNA sequencing, taxonomic classification showed dominance Proteobacteria, Bacteroidetes Firmicutes, a remarkably...
Selenium nanoparticles (SeNPs) have antimicrobial and antifungal activity. SeNPs using Se resistant bacteria is a low cost eco-friendly technology. Fungal contamination of wood during drying one the main causes economic losses in industry. The bacterium Delftia sp. 5 resistance to its ability produce able inhibit growth brown-rotting fungus Oligoporus pelliculosus was analyzed. strain showed an optimal production when selenite concentration 160 mg L-1. were spherical with average size 192.33...
Laguna (L.) Negra and L. Verde are high altitude Andean lakes located at the 4,400 m in desert (Puna) Argentine northwest. Both exposed to extreme weather conditions but differ salinity contents (salinity 6.7% for 0.27% Verde). The aim of this work was isolate ultraviolet B fraction (UV-B) resistant bacteria under UV-stress order determine, a possible connection, between resistance UV-B tolerance salinity. DNA damage determined by measuring CPDs accumulation. Connection among pigmentation...
Arsenic exists in natural systems a variety of chemical forms, including inorganic arsenite (As [III]) and arsenate [V]). The majority living organisms have evolved various mechanisms to avoid occurrence arsenic inside the cell due its toxicity. Common core genes include transcriptional repressor ArsR, an reductase ArsC, efflux pumps ArsB Acr3. To understand resistance we performed tolerance studies, genomic bioinformatic analysis two Exiguobacterium strains, S17 N139, from high-altitude...
High altitude Andean lakes are placed in Puna desert over 4400 above sea level. Completely isolated, they exposed to extreme environmental factors like high levels of salinity, UV radiation and heavy metals low concentrations phosphorus. Nevertheless, the habitat enormous populations three flamingo species that migrate among these Lakes. Previous reports have determined bacteria isolated from environments present resistance antibiotics. The aim this work was determine diversity antibiotic...
Exiguobacterium sp. strain S17 is a moderately halotolerant, arsenic-resistant bacterium that was isolated from Laguna Socompa stromatolites in the Argentinian Puna. The draft genome sequence suggests potent enzyme candidates are essential for survival under multiple environmental extreme conditions, such as high levels of UV radiation, elevated salinity, and presence critical arsenic concentrations.
The high-altitude Andean lakes (HAAL) in the Argentinean Puna-high Andes region represent an almost unexplored ecosystem exposed to extreme conditions (high UV irradiation, hypersalinity, drastic temperature changes, desiccation, and high pH). Here we present first genome sequence, a Sphingomonas sp., isolated from this environment.
Laguna Vilama is a hypersaline Lake located at 4660 m altitude in the northwest of Argentina high up Andean Puna. The impact ultraviolet (UV) radiation on bacterioplankton was studied by collecting samples different times day. Molecular analysis (DGGE) showed that community characterized Gamma‐proteobacteria ( Halomonas sp., Marinobacter sp.), Alpha‐proteobacteria Roseobacter HGC Agrococcus jenensis and an uncultured bacterium), CFB (uncultured Bacteroidetes). During day, minor modifications...
High levels of arsenic present in the Altitude Andean Lakes (HAALs) ecosystems selected arsenic-resistant microbial communities which are novel interest to study adaptations mechanisms potentially useful bioremediation processes. We herein performed a detailed characterization tolerance profiles and biofilm production two HAAL polyextremophiles, Acinetobacter sp. Ver3 (Ver3) Exiguobacterium S17 (S17). Cellular adherence over glass polypropylene surfaces were evaluated together with effect...
We report the genome sequence of Exiguobacterium chiriqhucha str. N139, isolated from a high-altitude Andean lake. Comparative genomic analyses genomes available suggest that our strain belongs to same species as previously reported E. pavilionensis RW-2 and GIC 31. describe this propose name group them. 'Chiri qhucha' in Quechua means 'cold lake', which is common origin these three cosmopolitan Exiguobacteria. The 2,952,588-bp N139 contains one chromosome megaplasmids. analysis suggests...
We report the genome sequence of Exiguobacterium pavilionensis str. N139, isolated from a high-altitude Andean lake. The 2,952,588-bp contains one chromosome and three megaplasmids. analysis suggests presence enzymes that confer E. N139 ability to grow under multiple environmental extreme conditions, including high concentrations different metals ultraviolet B radiation. Moreover, regulation its tryptophan biosynthesis novel pathways remain be discovered, these might fundamental in amino...
We report the genome sequence of Exiguobacterium pavilionensis str. N139, isolated from a high-altitude Andean lake. The 2,952,588-bp contains one chromosome and three megaplasmids. analysis suggests presence enzymes that confer E. N139 ability to grow under multiple environmental extreme conditions, including high concentrations different metals ultraviolet B radiation. Moreover, regulation its tryptophan biosynthesis novel pathways remain be discovered, these might fundamental in amino...
Selenium nanoparticles (SeNPs) have antimicrobial and antifungal activity. SeNPs using Se resistant bacteria is a low cost eco-friendly technology. Fungal contamination of wood during drying the main cause economic losses. Delftia sp. 5 resistance to its ability produce able inhibit growth brown-rotting fungus Oligoporus pelliculosus was analyzed. The strain showed an optimal production when selenite concentration 160 mg l -1. were spherical with average size 112.33 ± 8.6 nm zeta potential...