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Adaptation of Antarctic Freshwater Green Algae to Extreme Environments

  • Hanhua HuEmail author
Chapter
Part of the Cellular Origin, Life in Extreme Habitats and Astrobiology book series (COLE, volume 27)

Abstract

Antarctica as the coldest area on earth presents an extremely harsh environment for all living organisms inhabiting this frigid zone. Freshwater green algae, such as Chlamydomonas, Stichococcus, Chlorella, and Scenedesmus, have been isolated from Antarctica. These strains are distributed in all the areas of Antarctica and have successfully adapted to the extreme environmental conditions. The freshwater green algae residing in this area have evolved a set of strategies to counteract the effects of the extremely low and fluctuating temperature, desiccation, ultraviolet radiation, freeze-thaw cycles, etc. These adaptations include the alteration of cell morphology, ultrastructure, physiology, biochemical composition, and gene expression. Currently, although some genes and proteins related to cold adaptation or acclimation have been identified in these algae, the corresponding molecular mechanism is still obscure. The goal of this review is to describe the adaptive strategies of Antarctic freshwater green algae to extreme environments.

Keywords

Green Alga Freeze Tolerance Late Embryogenesis Abundant Cold Adaptation Lipid Head Group 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  1. 1.Institute of HydrobiologyThe Chinese Academy of SciencesWuhanPeople’s Republic of China

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