What is the colony morphology of Bacillus subtilis?
Bacillus subtilis is a typical germ, which is rod-shaped and Gram-positive. When cultured on ordinary nutrient agar, the morphology circular colony of this bacteria is rough, opaque, fuzzy white or slightly yellow with jagged edges [1, 7].
What is the morphology of Bacillus microorganisms?
Bacillus species are rod-shaped, endospore-forming aerobic or facultatively anaerobic, Gram-positive bacteria; in some species cultures may turn Gram-negative with age. The many species of the genus exhibit a wide range of physiologic abilities that allow them to live in every natural environment.
What is the morphology of E. coli?
Traditionally, the colony morphology of Escherichia coli is identified as either a rough or a smooth form. The two forms are readily distinguished, as the colonies of the former are rough, flat, and irregular and colonies of the latter are smooth, high, and circular.
What are the 5 basic categories of colony morphology?
These are the characteristics used to accurately and consistently describe the morphology of a bacterial colony:
- Size.
- Shape.
- Color (also known as pigmentation)
- Texture.
- Height (a.k.a. elevation)
- Edge (a.k.a. margin)
What are five characteristics of bacterial colony morphology?
Colonies need to be well isolated from other colonies to observe the characteristic shape, size, color, surface appearance, and texture.
How do you identify Bacillus cereus?
The traditional method of B. cereus detection is based on the bacterial culturing onto selective agars and cells enumeration. In addition, molecular and chemical methods are proposed for toxin gene profiling, toxin quantification and strain screening for defined virulence factors.
What is the colony morphology of E coli?
What is the morphology of Bacillus mycoides Flügge?
Bacillus mycoidesFlügge, a Gram-positive, non-motile soil bacterium assigned to Bacillus cereusgroup, grows on agar as chains of cells linked end to end, forming radial filaments curving clock- or counter-clockwise (SIN or DX morphotypes).
How does substrate structure affect colony morphology of Bacillus mycoides?
The effects of altered substrate structure on the colony morphology of B. mycoides. The normal chiral morphology of B. mycoides when grown from a single central point of inoculation on plate count agar (Top left). The response of a single propagating colony of B. mycoides to wells cut in the agar (Top right).
What is the pathophysiology of Bacillus mycoides environmental strains?
Colonies of Bacillus mycoides environmental strains. Colonies are formed by bacillar cells linked end to end in filaments running as bundles with a genetically determined curvature direction.
What is bacillis mycoides?
B. mycoides is present in a wide variety of environments, especially soil. B. mycoides are capable of causing disease in some fish, and were the reported cause of an outbreak of necrotic lesions in channel catfish in a commercial pond in Alabama. In 1998 a new Bacillis species was described, and named Bacillus weihenstephanensis.