Biotechnologically Relevant Yeasts from Patagonian Natural Environments

  title={Biotechnologically Relevant Yeasts from Patagonian Natural Environments},
  author={D. Libkind and Mart{\'i}n Molin{\'e} and Andrea Trochine and N. Bellora and V. D. Garcia},
The Patagonia region constitutes a vast geographic area with multiple extreme environments having one or more of these stress factors: cold, high UV incidence, desiccation, ultra-oligotrophy, acidity, and the presence of heavy metals, among others. Yeasts that constantly live under stress conditions evolve adaptive mechanisms to minimize or resist their negative effects and thus permit survival and reproduction. These specific mechanisms are promising sources of biotechnologically relevant… Expand
2 Citations
Yeasts in Continental and Seawater
The present chapter will provide an overview of the current knowledge on yeast diversity and ecology in continental freshwater and marine environments; in particular habitats like tropical and temperate rivers and lakes, seawater, and glacial melting water bodies will be reviewed. Expand
The Effect of Sunscreens on Yeast to Prevent Ultraviolet Damage
The impacts of Ultraviolet (UV) radiation on the human body have received increased attention in previous years. The impacts are comprised of a series of illnesses, burns, and modifications in theExpand


Occurrence of Photoprotective Compounds in Yeasts from Freshwater Ecosystems of Northwestern Patagonia (Argentina)
It is revealed that in Patagonian freshwater yeasts there is an apparent relationship between the ability to produce PPCs, their tolerance to UV exposure and their success in colonizing habitats highly exposed to UVR. Expand
Cold-Adapted Yeasts in Patagonian Habitats
The characterization of native cold-adapted yeast communities, the description of novel species and was a contribution to yeast taxonomy, biogeography and also to biotechnology. Expand
Molecular characterization of carotenogenic yeasts from aquatic environments in Patagonia, Argentina
This study represents the first report on red yeast occurrence and biodiversity in northwestern Patagonia and identified 64 carotenogenic yeast strains, including four new yeast species of the genera Cryptococcus, Rhodotorula and Sporobolomyces. Expand
Ecology and molecular adaptations of the halophilic black yeast Hortaea werneckii
The black yeast Hortaea werneckii represents a new model organism for studying the mechanisms of salt tolerance in eukaryotes and the salt-dependent expressions of two HwENA genes suggest roles for them in the adaptation to changing salt concentrations. Expand
Yeasts from an oligotrophic lake in Patagonia (Argentina): diversity, distribution and synthesis of photoprotective compounds and extracellular enzymes.
The yeast community from NH Lake showed a high species richness and a uniform distribution of taxa between pelagic and border collection points and demonstrated at least one extracellular enzymatic activity, which suggested that these microorganisms are metabolically active in the lake. Expand
Yeasts from glacial ice of Patagonian Andes, Argentina.
Cold-adapted yeast isolates were able to hydrolyze natural compounds at low temperatures, suggesting a significant ecological role of these organisms as organic matter decomposers and nutrient cyclers. Expand
Detection of plant growth enhancing features in psychrotolerant yeasts from Patagonia (Argentina)
It is suggested that yeasts present in different environments in Northwestern‐Patagonian have physiological in vitro features which may influence plant growth and are promising for the developing of biological products based on Patagonian yeasts for plant production in cold‐temperate regions. Expand
Yeasts from high-altitude lakes: influence of UV radiation.
It is indicated that UVR is an important environmental factor affecting the yeast community structure in aquatic habitats and strains from more transparent waters developed increased UVB resistance. Expand
Mycosporines in carotenogenic yeasts.
The consistent occurrence of mycosporines in some specific phylogenetic groups suggests this trait bears evolutionary significance and that the presence/absence of MYCs may have potential applications in yeast systematics. Expand
Mycosporines and mycosporine-like amino acids: UV protectants or multipurpose secondary metabolites?
The evidence for these additional roles of MAAs as 'multipurpose' secondary metabolites is reviewed, with special emphasis on their functions in the microbial world. Expand