Gray I And L Murray example essay topic

271 words
LITERATURE REVIEW. Listeria Monocytogenes Listeria is under major food borne pathogens. Murray et al were credited with the discovery of small Gram-positive bacillus from blood of infected rabbits in 1924. Since it produces a typical during illness in the diseased animal the organism was designated Bacterium. Pirie (1940) isolated an organism from gerbils which is very similar to that bacterium described by Murray et al and named it Listerella in honor of Lord Lister an English surgeon who is a discoverer of antisepsis (Doyle 1989). In 1939, it was discovered that the generic name Listerella had already been used for group of slime molds in 1906.

This proposed name was changed by Pirie in 1940 from Listerella to Listeria. This name change was later approved in 1954 by the Judicial Commission on Bacteriological Nomenclature and Taxonomy (Ryser et al. 1991). In United States, in 1960's most of the research was done based on animals by M.L. Gray and his associates (Doyle 1989). In 1985 eight species of listeria were recognized under Approved Lists of Bacterial Names. They are Listeria, L. ivanov ii, L. inocula, L., L., L. murray i, and L. gray i (Ryser et al.

1991). Although we can find these eight species of Listeria in the ninth edition of Bergey's Manual of Systematic Bacteriology, spp. L. gray i, and L. Murray are being consider for reclassification and placed in a newly created genus Murray. L. has been reclassified as Jones ia. By observing the studies using DNA / DNA hybridization technology the degree of relatedness.