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Organic Lake is a lake in the Vestfold Hills in eastern Antarctica. It was formed 6,000 years ago when sea levels were higher; it is isolated, rather shallow 7.5 metres (25 ft), meromictic, a few hundred meters in diameter and has extremely salty water. It has the highest recorded concentration of dimethyl sulfide in any natural body of water.[1][2]
| Organic Lake | |
|---|---|
  Organic Lake | |
| Location | Antarctica |
| Coordinates | 68°27′23″S 78°11′23.5″E |
| Type | Meromictic lake |
| Average depth | 7.5 metres (25 ft) |
In 2011, a new species of virophage (a satellite virus that impairs the ability of its co-infective host virus to replicate) was discovered in Organic Lake, the Organic Lake virophage. It is a parasite of 'Organic Lake phycodnavirus',[1] a large virus that infects algae and belongs to the nucleocytoplasmic large DNA viruses (NCLDV), but in fact may rather be a member of an extended family Mimiviridae (aka Megaviridae) than of the family Phycodnaviridae.[3][4][5][6]
References
- "'Virus-eater' discovered in Antarctic lake". Nature News. 28 March 2011.
- Franzmann, PD; PP Deprez; HR Burton & J van den Hoff (1987-01-01). "Limnology of Organic Lake, Antarctica, a meromictic lake that contains high concentrations of dimethyl sulfide". Marine and Freshwater Research. 38 (3): 409–417. doi:10.1071/MF9870409.
- Koonin, Eugene V.; Krupovic, Mart & Yutin, Natalya (April 2015). "Evolution of double-stranded DNA viruses of eukaryotes: from bacteriophages to transposons to giant viruses". Annals of the New York Academy of Sciences. 1341 (1): 10–24. Bibcode:2015NYASA1341...10K. doi:10.1111/nyas.12728. PMC 4405056. PMID 25727355. (Figure 3)
- Maruyama, Fumito & Ueki, Shoko (30 November 2016). "Evolution and phylogeny of large DNA viruses, Mimiviridae and Phycodnaviridae including newly characterized Heterosigma akashiwo virus". Frontiers in Microbiology. 7: 1942. doi:10.3389/fmicb.2016.01942. PMC 5127864. PMID 27965659.
- Zhang, Weijia; Zhou, Jinglie; Liu, Taigang; Yu, Yongxin; Pan, Yingjie; Yan, Shuling & Wang, Yongjie (13 October 2015). "Four novel algal virus genomes discovered from Yellowstone Lake metagenomes". Scientific Reports. 5 (1): 15131. Bibcode:2015NatSR...515131Z. doi:10.1038/srep15131. PMC 4602308. PMID 26459929.
- Schulz, Frederik; Yutin, Natalya; Ivanova, Natalia N.; Ortega, Davi R.; Lee, Tae Kwon; Vierheilig, Julia; Daims, Holger; Horn, Matthias; Wagner, Michael; Jensen, Grant J.; Kyrpides, Nikos C.; Koonin, Eugene V. & Woyke, Tanja (6 April 2017). "Giant viruses with an expanded complement of translation system components". Science. 356 (6333): 82–85. Bibcode:2017Sci...356...82S. doi:10.1126/science.aal4657. PMID 28386012. (especially Fig. 2)
На других языках
[de] Organic Lake
Der Organic Lake ist ein See in den Vestfoldbergen in der östlichen Antarktis, in unmittelbarer Nähe des Ace Lake. Es wurde vor 6000 Jahren gebildet, nachdem der damals höhere Meeresspiegel absank; heute liegt er 2 Meter über dem Meeresspiegel. Es ist isoliert, eher flach (7,5 m Tiefe), meromiktisch,[1] hat einen Durchmesser von einigen hundert Metern und seine Fläche beträgt 0,15 Quadratkilometer. Es erstreckt sich über 0,6 Kilometer in Nord-Süd-Richtung und 0,9 Kilometer in Ost-West-Richtung. Sein Wasser ist extrem salzhaltiges Wasser und hat die höchste gemessene Konzentration an Dimethylsulfid in einem natürlichen Gewässer.[2][3]- [en] Organic Lake
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