What is the cell morphology of Clostridium?
What is the cell morphology of Clostridium?
Clostridia possess no one typical colony morphology. They are generally a large colony (>2mm) with irregular edges or swarming growth. Some Clostridia form small, convex, non-hemolytic colonies with a smooth edge. Other Clostridia produce several different-looking colony types, so the culture appears mixed.
What is the Gram reaction of Clostridium?
Clostridia are strictly anaerobic to aerotolerant sporeforming bacilli found in soil as well as in normal intestinal flora of man and animals. There are both gram-positive and gram-negative species, although the majority of isolates are gram-positive.
What is the special characteristics of Clostridium bacteria?
CHARACTERISTICS: Clostridium is a genus of gram-positive, spore-forming bacteria belonging to the family Clostridiaceae. Vegetative cells are rod shaped and arranged in pairs or short chains. The majority of species are obligate anaerobes; however, some species can grow under aerobic conditions or are aerotolerant.
Is Clostridium botulinum A vegetative cell?
The Organism: Clostridium botulinum is an anaerobic, sporeforming bacteria that produces a neurotoxin. The bacteria can exist as a vegetative cell or a spore. The spore is the dormant state of the bacteria and can exist under conditions where the vegetative cell cannot.
What causes clostridial myonecrosis that destroys muscular tissues?
Causes. Clostridial myonecrosis is caused by infection with species of the Clostridium genera of bacteria. Clostridia are found throughout nature. They are found in soil and marine sediments and can be found in animal and human gastrointestinal tracts.
What is Nagler’s reaction?
Lecithinase test or Nagler’s reaction is a biochemical test used to identify organisms that liberate phospholipases (lecithinases) e.g. Clostridium perfringens. The alpha (α) toxin of C. perfringens has phospholipase activity and hence, helps in the differentiation of C.
What are the gram reactions of Clostridium and Bacillus?
Bacillus and clostridium are both Gram-stain positive.
What are two basic characteristics of Clostridium?
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