By Pietro Buzzini, Rosa Margesin
Yeasts are a flexible staff of eukaryotic microorganisms, showing heterogeneous dietary profiles and a unprecedented skill to outlive in quite a lot of average and man-associated ecosystems, together with chilly habitats. Cold-adapted yeasts inhabit quite a few low-temperature environments the place they're subjected to seasonal or everlasting chilly stipulations. accordingly, they've got advanced a couple of model recommendations with reference to development and replica, metabolic actions, survival and safeguard. because of their particular skill to thrive effectively at low or even subzero temperatures, cold-adapted yeasts are more and more attracting consciousness in uncomplicated technology and for his or her huge, immense biotechnological potential.
This booklet offers our present figuring out of the variety and ecology of cold-adapted yeasts in world wide chilly ecosystems, their edition techniques, and their biotechnological importance. exact emphasis is put on the exploitation of cold-adapted yeasts as a resource of cold-active enzymes and biopolymers, in addition to their advantages for meals microbiology, bioremediation and biocontrol. extra, points of nutrients biodeterioration are considered.
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Yeasts are a flexible team of eukaryotic microorganisms, showing heterogeneous dietary profiles and a rare skill to outlive in a variety of usual and man-associated ecosystems, together with chilly habitats. Cold-adapted yeasts inhabit a number of low-temperature environments the place they're subjected to seasonal or everlasting chilly stipulations.
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Additional resources for Cold-adapted Yeasts: Biodiversity, Adaptation Strategies and Biotechnological Significance
UNESCO-EOLSS Publisher Russo G, Libkind D, Sampaio JP, van Broock M (2008) Yeast diversity at the Volcanic acidic environment of the Lake Caviahue and Rio Agrio (Patagonia, Argentina). FEMS Microbiol Ecol 65:415–424 22 P. Buzzini and R. Margesin Sabri A, Jacques P, Wekkers F, Bare G, Hiligsmann S, Moussai‹ f M, Thonart DP (2000) Effect of temperature on growth of psychrophilic and psychrotrophic members of Rhodotorula aurantiaca. Appl Biochem Biotechnol 84–86:391–399 Schisler DA, Janisiewicz WJ, Boekhout T, Kurtzman CP (2011) Agriculturally important yeasts: biological control of field and postharvest diseases using yeast antagonists, and yeasts as pathogens of plants.
1 most likely reflects the travel preferences of the field microbiologists who collect yeasts, rather than the actual biogeography of psychrotolerant yeasts. Psychrotolerant yeasts in the CBS catalog were isolated from cold habitats such as glaciers, snow, and chilled beef, but also from various mid-temperature habitats such as fruits, flowers, trees, seawater, soil, and insects. These yeasts could be useful for many applications as discussed in Part IV of this book. A broad variety 40 K. L. 4.
Similarly, the van Dorn sampler is a sample tube that is lowered into the water in a horizontal position with both ends open, and at the desired depth, the ends are sealed with spring-loaded valves by releasing a messenger down the cable. Note that in both types of sampler, the interior of the sampling tube is exposed to surface water as it is lowered. Microbes from the higher zones are diluted but not excluded. A variant, the Niskin biosampler, allows aseptic sampling. Another sampling apparatus, the J-Z sampler, has been modified to reduce contamination (Kimball et al.
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