Planomicrobium stackebrandtii

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Planomicrobium stackebrandtii
Systematics
Department : Firmicutes
Class : Bacilli
Order : Bacillales
Family : Planococcaceae
Genre : Planomicrobium
Type : Planomicrobium stackebrandtii
Scientific name
Planomicrobium stackebrandtii
( Mayilraj et al. 2005) Yoon et al. 2009

Planomicrobium stackebrandtii is a type of bacteria . The species is one of the gram-positive bacteria. The bacterium wasdiscoveredin the Himalayas in 2005and was initially called Planococcus stackebrandtii . The species name was chosen in honor of the German microbiologist Erko Stackebrandt .

features

Appearance

The colonies of Planomicrobium stackebrandtii are orange in color, round with a diameter of 1 to 2 mm, their shape is convex when viewed from the side. The cells are cocci-shaped and appear in pairs or clumps. The cells are actively motile , they have one or two flagella . Endospores are not formed.

Growth and metabolism

Planomicrobium stackebrandtii is chemo-organotrophic and aerobic . The catalase test is positive, the oxidase test is negative. Planomicrobium stackebrandtii can use citrate as the sole carbon and energy source and can utilize gelatin through hydrolysis . It cannot hydrolyze casein and starch . It can utilize numerous carbohydrates , including a. Glucose , galactose , fructose , lactose , raffinose and sucrose , acid is formed in the process, except for glucose. Further investigations as part of a “colorful series” describing the metabolic products show that it has the enzyme ornithine decarboxylase (ODC) for splitting off carbon dioxide from the amino acid L - ornithine . On the other hand, it is negative in the Voges-Proskauer reaction and in the methyl red sample ; it cannot form hydrogen sulfide or reduce nitrate to nitrite . It does not have the enzymes urease , arginine dihydrolase (ADH) or lysine decarboxylase (LDC).

Temperatures tolerated for growth are between 15 and 30 ° C, the optimal growth temperature is 25 ° C. Up to 7% sodium chloride (NaCl, table salt) is tolerated in the nutrient medium . However, the NaCl is not absolutely necessary for growth, so Planomicrobium stackebrandtii is halotolerant . The cultivation succeeds on TSA agar, a nutrient medium that contains peptone from soy. Growth takes place at slightly acidic, neutral and alkaline pH values (pH value 5.6 to 11.0).

Chemotaxonomic Features

The GC content in the bacterial DNA is 40 mol percent. The predominantly present menaquinones are MK-7 and MK-8. The peptidoglycan of the cell wall contains the amino acid L - lysine and the sugars D - glucose and D - ribose .

Systematics

S. Mayilraj described the newly discovered species Planococcus stackebrandtii in 2005 . It is one of the Firmicutes . Due to the work of Jung-Hoon Yoon and others, the species was later placed in the genus Planomicrobium . The generic name is made up of the Greek word "πλάνος" (wanderer) and the Greek adjective "μικρός" (small) and refers to the property of the motility of these bacteria. The epithet was chosen in honor of the German microbiologist Erko Stackebrandt .

ecology

Planomicrobium stackebrandtii was found in a cold desert in the Himalayas .

Individual evidence

  1. ↑ a b c d e S. Mayilraj, GS Prasad u. a .: Planococcus stackebrandtii sp. nov., isolated from a cold desert of the Himalayas, India. In: International journal of systematic and evolutionary microbiology. Vol. 55, No. 1, January 2005, pp. 91-94, ISSN  1466-5026 . doi: 10.1099 / ijs.0.63290-0 . PMID 15653859 .
  2. ^ A b Jean Euzéby, Aidan C. Parte: Genus Planomicrobium. In: List of Prokaryotic names with Standing in Nomenclature ( LPSN ). Retrieved December 31, 2013 .
  3. ↑ Yong-Taek Jung, So-Jung Kang, Tae-Kwang Oh, Jung-Hoon Yoon and Bong-Hee Kim: Planomicrobium flavidum sp. nov., isolated from a marine solar saltern, and transfer of Planococcus stackebrandtii Mayilraj et al. 2005 to the genus Planomicrobium as Planomicrobium stackebrandtii comb. nov. In: International Journal of Systematic and Evolutionary Microbiology . Volume 59, Number 12, 2009, pp. 2929-2933 .

literature