What are the characteristics of Bacillus anthracis?
Bacillus anthracis — Key Characteristics
- Large, box-car shaped, gram-positive rod in short or long chains.
- Non-swelling, oval spores formed when grown on culture media.
- Encapsulated rods may be seen in clinical specimens.
- Ground-glass appearance of colonies.
- Nonhemolytic on sheep blood agar.
What is the classification of Bacillus?
Which disease is caused by Bacillus anthracis?
Anthrax is a serious infectious disease caused by gram-positive, rod-shaped bacteria known as Bacillus anthracis.
Where can bacillus be found?
The vast majority of these bacteria are nonpathogenic, environmental organisms found in soil, air, dust, and debris. These organisms typically dominate indoor air in occupied buildings, are abundant in dust and on surfaces, and are common components of the microflora of cleanrooms.
What is the Colour of bacillus?
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 shape of bacillus bacteria?
Bacillus, (genus Bacillus), any of a genus of rod-shaped, gram-positive, aerobic or (under some conditions) anaerobic bacteria widely found in soil and water. The term bacillus has been applied in a general sense to all cylindrical or rodlike bacteria.
What are the characteristics of a typical Bacillus?
Typical Bacillus spp. exhibit large, flat colonies on non-selective media. They are often beta-hemolytic. Non-typical Bacillus strains may be very small and spore formation often fails to occur.
What is the morphology of a Bacillus subtilis colony?
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 are the characteristics of a bacterial colony?
Colony Characteristics. Color – It is important to describe the color or pigment of the colony. Also include descriptive terms for any other relevant optical characteristics such as: opaque, cloudy, translucent, iridescent. 2. Elevation – This describes the “side view” of a colony. These are the most common.
Can a non typical Bacillus grow on Agars?
Non-typical Bacillus strains may be very small and spore formation often fails to occur. Most do not grow well on enteric agars.