Planomicrobium glaciei

from Wikipedia, the free encyclopedia
Planomicrobium glaciei
Systematics
Department : Firmicutes
Class : Bacilli
Order : Bacillales
Family : Planococcaceae
Genre : Planomicrobium
Type : Planomicrobium glaciei
Scientific name
Planomicrobium glaciei
Zhang et al. 2009

Planomicrobium glaciei is a type of bacteria . The species is one of the firmicutes .

features

Appearance

The cells are coccoid in young cultures, rod-shaped bacteria also appear in older cultures. Spores are not formed. Planomicrobium glaciei is flagellated , but can also move gliding. The cultures are colored yellow to orange.

Growth and metabolism

Growth appears at temperatures between 4 and 28 ° C, optimal growth takes place at 20 - 21 ° C. The necessary pH value is 5 - 10, for optimal growth a pH value of 6 - 7.5 is necessary. The oxidase test is negative, the catalase test is positive.

The bacterium can hydrolytically break down the protein gelatin . The test for hydrolysis of casein was positive, too , whereas the test for hydrolysis of starch and polysorbate 20 , 60 and 80 was negative. The urease test, indole test and the Voges – Proskauer test are also negative. Nitrate is reduced.

Cellobiose , trehalose , D - mannose , glucose , sucrose , L - arabinose , ribose , fructose and mannitol can be used as the sole carbon source .

Chemotaxonomic Features

Planomicrobium glaciei is gram positive . The GC content in the DNA is 49 mol percent. The predominantly present menaquinones are MK-7 and MK-8. The peptidoglycan type is A4α, the cell wall contains the amino acids L- lysine , D- glutamic acid and L- alanine .

Systematics

Planomicrobium glaciei belongs to the Planococcaceae family , which in turn belongs to the order of the Bacillales . This species was first described by De-Chao Zhang and co-workers in 2009 .

ecology

Planomicrobium glaciei was isolated from frozen soil samples from a glacier in the Xinjiang Uighur Autonomous Region . Several new types of bacteria that specialize in cold environments ( i.e. are psychrophilic ) have already been isolated here. Examples are Flavobacterium xinjiangense and Flavobacterium omnivorum , described by Fei Zhu and coworkers, and Flavobacterium glaciei described by a group led by De-Chao Zhang . It is a relatively simple and closed ecosystem there .

etymology

The generic name is made up of the Greek words planos ("wanderer") and micros ("small") and refers to the size (it is either cocci or short rods) and the property of the motility of these bacteria. The species name P. glaciei refers to the location of the bacterium. "Glaciei" is a Latin word and means something like "ice", the species was found in the bottom of a glacier.

Individual evidence

  1. ↑ a b c d e f g De-Chao Zhang, Hong-Can Liu, Yu-Hua Xin, Yong Yu, Pei-Jin Zhou and Yu-Guang Zhou: Planomicrobium glaciei sp. nov., a psychrotolerant bacterium isolated from a glacier In: International Journal of Systematic and Evolutionary Microbiology 2009, Volume 59, No. 6, pp. 1387-1390 doi : 10.1099 / ijs.0.002592-0
  2. ^ Eugene Rosenberg, Edward F. DeLong, Stephen Lory, Erko Stackebrandt, Fabiano Thompson: The Prokaryotes. Firmicutes and Tenerife . Springer, 2014, ISBN 978-3-642-30121-6 .
  3. ↑ Systematics according to JP Euzéby: List of Prokaryotic names with Standing in Nomenclature (LPSN) (as of February 12, 2019)
  4. ↑ Zhu, F., Wang, S. & Zhou, P .: Flavobacterium xinjiangense sp. nov. and Flavobacterium omnivorum sp. nov., novel psychrophiles from the China No. 1 glacier. In: International Journal of System and Evolution Microbiology 2003, 53, pp. 853-857. doi : 10.1099 / ijs.0.02310-0
  5. ↑ De-Chao Zhang, Hong-Can Liu, Yu-Hua Xin, Yong Yu, Pei-Jin Zhou, Yu-Guang Zhou: Flavobacterium glaciei sp. nov., a novel psychrophilic bacterium isolated from the China No. 1 glacier. In: International Journal of Systematic and Evolutionary Microbiology. Volume 56, Pt 12, 2006, pp. 2921-2925. doi: 10.1099 / ijs.0.64564-0

Web links