Tag Archives | Groups of Microorganisms

In this article we will discuss about the features and classification of four general groups of microorganisms:- 1. Rickettsias 2. Chlamydias 3. Planctomycetes 4. Verrumicrobiota. Group # 1. Rickettsias: Most live in an obligate intracellular association parasitic or mutualistic, with eukaryotic hosts (vertebrates or arthropods); a few can be grown on moderately complex bacteriological media containing blood. Their cell walls [...]

Symbiotic associations with different groups of microorganisms are discussed below: (i) Cyanobacterial Symbiosis: The term cyanobacteria is of recent origin which includes the members of cyanophyceae. They may be both heterocystous and non-heterocystous forms. Heterocyst is the site of nitrogen fixation. The non-heterocystous forms also fix nitrogen. Anabaena cycadae is associated with the coralloid roots of Cycas. It is present [...]