Is Flavobacterium catalase positive?

A yellow-pigmented, oxidase-positive, catalase-negative, Gram-stain-negative, rod-shaped, aerobic and non-motile bacterial strain designated K3R-10T was isolated from a freshwater source.

Is Flavobacterium Gram positive or negative?

Flavobacterium species are nonfastidious, oxidase-positive, gram-negative rods that do not ferment glucose. These organ- isms are widely distributed in nature and in hospital environ- ments [1]. Except for Flavobacterium meningosepticum, most species are rarely pathogenic in humans [1-3].

Is Flavobacterium motile or nonmotile?

See text. Flavobacterium is a genus of Gram-negative, nonmotile and motile, rod-shaped bacteria that consists of 130 recognized species. Flavobacteria are found in soil and fresh water in a variety of environments.

Where are Flavobacterium found?

Members of the genus Flavobacterium are distributed widely in nature and have been isolated from various habitats such as diseased fish, microbial mats, freshwater and river sediments, seawater and marine sediments, soil, glaciers, and Antarctic lakes.

Does flavobacterium grow on MacConkey Agar?

Clinical Flavobacterium Primary plating of a clinical specimen is usually onto blood, chocolate, eosin-methylene blue, or MacConkey agar, but other media may be used. Incubation temperature is 35–37°C, but the bacteria will grow at room temperatures (20–25°C).

Is flavobacterium pathogenic?

Original ResearchFlavobacterium columnare is a Gram-negative fish pathogen causing columnaris disease in wild and cultured fish species. Although the pathogen is widespread in aquatic environments and fish worldwide, little is known about biology of F.

Is salmonella a Gammaproteobacteria?

The genus Salmonella belongs to the class Gammaproteobacteria and includes pathogens that cause salmonellosis and typhoid fever.

What branch of bacteria is flavobacterium Bacteroides most similar to?

fragilis aconitase is most closely related to aconitases of two other Cytophaga-Flavobacterium-Bacteroides (CFB) group bacteria, Cytophaga hutchinsonii and Fibrobacter succinogenes.

Is Bacteroides aerobic or anaerobic?

Bacteroides species are anaerobic, bile-resistant, non-spore-forming, gram-negative rods.

Is flavobacterium aerobic or anaerobic?

a genus of gram-negative, aerobic or facultatively anaerobic, rod-shaped bacteria, characteristically producing a yellow pigment. Organisms occur widely in soil and water and are opportunistic pathogens in humans.

How is Elizabethkingia spread?

The bacteria that is associated with this condition is usually carried by certain types of mosquitos; however, the role of mosquitoes in spreading Elizabethkingia anophelis is unclear. Treatment varies based on the strain of Elizabethkingia anopheles.

Is actinobacteria harmful?

Exposure to high concentrations of actinobacteria can cause allergic alveolitis. Other respiratory disorders have been reported, too and although the measured concentrations are low, the indoor exposure is always a mixture of many different agents, which may have synergistic effects.

How big is a Gram stain of Flavobacterium?

MICROSCOPIC APPEARANCE Gram Stain: Negative. Morphology: Rods with straight, parallel sides and r Size: 0.5 micrometers by 1.0-3.0 micrometers. Motility: Non-motile. Spores: Endospores are not formed.

Where are Flavobacterium bacteria found in the world?

Catalase-positive. Oxidase-positive. Phosphatase-positive. Indole-positive. Urease-negative. DNase-negative. Widely distributed in soil and water; found in raw meats, milk and other foods, also found in hospital environments and in other human clinical material. Found in humans and cats as pathogenic.

Where is flavobacterium meningosepticum found in humans?

DNase-negative. Widely distributed in soil and water; found in raw meats, milk and other foods, also found in hospital environments and in other human clinical material. Found in humans and cats as pathogenic. Flavobacterium meningosepticum is well recognized as a cause of neonatal meningitis and such infections have a poor prognosis.

What kind of disease can Flavobacterium agar cause?

The pathogenicity for man of other Flavobacterium species is less well documented but cases of meningitis, bacteremia, and upper respiratory tract colonization of seriously ill patients have been attributed to group IIb. Columbia Blood Agar, Nutrient Agar, or Tryptic Soy Agar.