![]() The pattern of infection of different bacteriophages is mostly needed three steps to complete. Ti plasmid is an example of virulence plasmid which is present in Agrobacterium tumefaciens and causes crown gall disease in dicotyledonous plants. ![]() Virulence plasmid:Virulence plasmids are present in pathogenic bacteria and responsible for causing infection or disease to the host cell. ![]() ![]() Example: TOL found in Pseudomonas putida. coli.ĭegradative plasmid: This type of plasmid is responsible for the degradation of complex compounds like toluene, salicylic acid. ColE1 is an example of this type of plasmid which is found in E. This is a type of toxin which is generally released in the environment to reduce competition for nutrition. An example of R plasmid is RP4 which is commonly present in Pseudomonas sp.Ĭol Plasmid: Col plasmids are responsible for the production of colicin and commonly found in some strains of E. In clinical microbiology, R plasmid plays an important role as it is the main reason behind the development of antibiotic resistance in bacterial pathogens. R plasmid or Resistance: This type of plasmids contains one of the multiple antibiotic resistance genes. ![]() The five groups are the following:į plasmid or Fertility: F plasmid contains specifically the tra gene and facilitates the transfer of plasmids by conjugation. The naturally occurring plasmids are classified under five major groups on the basis of the genes present in the plasmids. ![]()
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