Evolutionary origins of Antarctic microbiota: invasion, selection and endemism

@article{Vincent2000EvolutionaryOO,
  title={Evolutionary origins of Antarctic microbiota: invasion, selection and endemism},
  author={Warwick F. Vincent},
  journal={Antarctic Science},
  year={2000},
  volume={12},
  pages={374 - 385}
}
  • W. Vincent
  • Published 1 September 2000
  • Environmental Science, Biology
  • Antarctic Science
Increasing interest in the ecological roles, conservation and biotechnological potential of Antarctic microbiota has focused attention on their biodiversity and evolutionary origins. Antarctic microbial ecosystems provide useful models for general questions in evolutionary ecology given the relative isolation of the South Polar Region, the severe biological constraints imposed by the polar environment, and the absence of higher plants and animals in some Antarctic habitats. Sealed environments… 
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References

SHOWING 1-10 OF 114 REFERENCES
Community structure and psychrophily in Antarctic microbial ecosystems
TLDR
Evidence based on cultivation work indicated quartz stone subliths like sea ice are havens for psychrophilic bacteria, and the culturability of bacteria from sea ice communities was also demonstrated to be surprisingly high with molecular data matching cultivation data.
Poles apart: biodiversity and biogeography of sea ice bacteria.
TLDR
This review discusses sea ice bacteriology as a test case for examining bacterial diversity and biogeography and proposes a set of postulates to determine whether prokaryotes are "cosmopolitan" (found in more than one geographic location on Earth) or candidate endemic species.
Phylogenetic diversity of picocyanobacteria in Arctic and Antarctic ecosystems
TLDR
Analysis of the 16S rDNA of phycoerythrin-rich isolates from lakes in this region show that they form a distinct cluster, most closely related (97% similar) to P. marinus.
Cyanobacterial Dominance in the Polar Regions
Although cyanobacteria are often thought of as warm water organisms. they are the predominant biota in cold polar environments such as ice shelves. glaciers. glacial meltwater streams and ice-capped
Ice Shelf Microbial Ecosystems in the High Arctic and Implications for Life on Snowball Earth
TLDR
The Ward Hunt Ice Shelf is the largest remaining section of thick (>10 m) landfast sea ice along the northern coastline of Ellesmere Island, Canada, and is similar in several of its physical, biological and geochemical features to the McMurdoIce Shelf in Antarctica.
CYANOBACTERIAL DOMINANCE OF POLAR FRESHWATER ECOSYSTEMS: ARE HIGH‐LATITUDE MAT‐FORMERS ADAPTED TO LOW TEMPERATURE? 1
TLDR
The results imply that most polar cyanobacteria are psychrotrophs, not psychrophiles, and other competitive advantages such as tolerance to desiccation, freeze—thaw cycles, and bright, continuous solar radiation may contribute to their dominance in polar aquatic ecosystems.
Airborne dispersal of antarctic terrestrial algae and cyanobacteria
TLDR
Algal propagules have the ability to survive long-distance transport and potentially provide mocula for colonization of Antarctica as regional warming continues to expose fresh habitats.
Evidence for Circumpolar Distribution of Planktonic Archaea in the Southern Ocean
TLDR
The hypothesis that planktonic archaea are a common, widespread and likely ecologically important component of Antarctic picoplankton assemblages is supported.
Pseudopleurochloris antarctica gen. et sp. nov. a new coccoid xanthophycean from pack-ice of Wood Bay (Ross Sea, Antarctica): ultrastructure, pigments and 18S rRNA gene sequence
TLDR
Molecular evidence indicates that the Antarctic isolate is the sister group of a clade that comprises two other representatives of the Xanthophyceae: Pleurochloris meiringensis and Botrydiopsis intercedens.
Methylosphaera hansonii gen. nov., sp. nov., a psychrophilic, group I methanotroph from Antarctic marine-salinity, meromictic lakes.
TLDR
On the basis of polyphasic taxonomic characteristics the Antarctic lake isolates represent a novel group I methanotrophic genus with the proposed name Methylosphaera hansonii (type strain ACAM 549), which is a distinct line of descent in the family Methylococcaceae.
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