What is Arthrobacter?

Arthrobacter is a brand of bacilli that is frequently begin in soil. All breed in this brand are Gram-positive astrict aerobes that are rods during exponential advance and cocci in their anchored phase.
Colonies of Arthrobacter accept a greenish brownish centermost on mineral salts pyridone borsch incubated at 20 °C (68 °F). This brand is characteristic because of its abnormal addiction of "snapping division" in which the alien bacterial corpuscle bank ruptures at a collective (hence its name). Microbiologists accredit to the blazon of corpuscle analysis in which rods breach into cocci as reversion. Under the microscope, these adding beef arise as chevrons ("V" shapes). Other notable characteristics are that it can use pyridone as its sole carbon source, and that its cocci are aggressive to aridity and starvation.
One species, A. crystallopoieties, has been apparent to abate hexavalent chromium levels in attenuated soil, suggesting that it may be advantageous in bioremediation.
Arthrobacter chlorophenolicus sp. nov., a breed able of aspersing top concentrations of 4-chlorophenol, may aswell be advantageous in bioremediation. Arthrobacter sp. ache R1 has been apparent to abound on a array of ambrosial compounds, including homocyclic compounds, such as hydroxybenzoates, as able-bodied as N-heterocycles, including pyridine and picoline.
Arthrobacter sp H65-7 produces the agitator inulase II that converts inulin into difructose anhydride (DFA). DFA is a able comestible for angry osteoporis, because it helps assimilation of calcium in the intestines.
Cell Structure and Metabolism
Arthrobacteria are coryneform bacteria. They are characterized by pleomorphism (variable shape) and Gram airheadedness (staining absolute or negative) although genetically they annex from the Gram-positive phylum Actinobacteria. They accept a circuitous activity aeon apparent by two audible stages. When the cultures are young, beef are attenuate rods that may stain Gram-negative. Jointed rods can be empiric afterwards about 1-2 days. By about 30 hours the beef accept become actual short, gram-positive rods and coccoids. Arthrobacteria are nonsporulating and are associates of the actinomycete annex of the gram-positive bacteria. Many arthrobacteria display a anemic activity that is generally overlooked.
Arthrobacteria are nutritionally versatile, application a array of substrates in their oxidative metabolism including nicotine, nucleic acids, and assorted herbicides and pesticides. Most breed of Arthrobacter are astrict aerobes, but all display a authentic respiratory, never fermentative metabolism.
Research has apparent that at atomic two breed of Arthrobacter, A. globiformis and A. nicotianae, display anaerobic metabolism. In the high layers of clay inhabited by arthrobacteria changes in oxygen concentrations are frequent, and these breed of Arthrobacter accept acclimatized oxygen absolute advance strategies in adjustment to survive periods of oxygen limitation. These breed use nitrate as an electron acceptor at the end of their respiratory chain, abbreviation it to ammonia via nitrite.
More about: Arthrobacter sale
Read more: Lactobacillus bacteria