Herminiimonas glaciei

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Herminiimonas glaciei
Systematics
Department : Proteobacteria
Class : Betaproteobacteria
Order : Burkholderiales
Family : Oxalobacteraceae
Genre : Herminiimonas
Type : Herminiimonas glaciei
Scientific name
Herminiimonas glaciei
Loveland-Curtze , Miteva & Brenchley , 2009

Herminiimonas glaciei is one of the ultramicrobacteria . They were discovered by scientists in the 120,000 year old Greenland ice from a depth of 3,042 m.

features

Herminiimonas glaciei is gram-negative and rod-shaped. The cells are approximately 0.5-0.9 long and up to 0.3-0.4 micrometers wide. The cell volume is 0.043 µm 3 , making the species one of the ultramicrobacteria. Bacteria with a cell volume of less than 0.1 μm 3 are used for this purpose .

Herminiimonas glaciei has one to two large flagella at the end of the cell (polar) and / or one to three laterally located flagella. It is believed that the large flagella are used to move the small body through the crevices in the ice and thus collect enough energy in the extremely nutrient-poor environment.

Jennifer Loveland-Curtze's group was only able to stimulate the bacteria to grow after a lengthy process. They were first cultured for seven months at 2 ° C under anaerobic conditions in a special medium (R2B) and then for a further four and a half weeks at 5 ° C on a casein-soy-peptone agar . The color of the cultures is white to light brown, with the original culture being brown-purple in color.

Systematics

The species Herminiimonas glaciei belongs to the family of Oxalobacteraceae which belongs to the order Burkholderiales of the Proteobacteria . It was published in 2009 by Jennifer Loveland-Curtze et al. newly described.

Their closest relatives are Herminiimonas saxobsidens (99.6% similarity in the genome), Herminiimonas arsenicoxydans (98.4%), Herminiimonas aquatilis (97.6%) and Herminiimonas fonticola (97.9%).

Individual evidence

  1. ↑ DJ Reasoner and EE Geldreich: A new medium for the enumeration and subculture of bacteria from potable water. In: Applied and Environmental Microbiology . (1985) 49 (1), pp. 1-7
  2. ^ Vanya I. Miteva and Jean E. Brenchley: Detection and isolation of ultrasmall microorganisms from a 120,000-year-old Greenland glacier ice core In: Applied and Environmental Microbiology (2005), 71 (12): pp. 7806-7818. doi : 10.1128 / AEM.71.12.7806-7818.2005

literature

  • Jennifer Loveland-Curtze, Vanya I. Miteva, Jean E. Brenchley: Herminiimonas glaciei sp. nov., a novel ultramicrobacterium from 3042 m deep Greenland glacial ice Free. International Journal of Systematic and Evolutionary Microbiology 59 (6), June 1, 2009; Pp. 1272-1277. doi : 10.1099 / ijs.0.001685-0

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