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Malaria Genetics & Genomics | ![]() |
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P. berghei was first isolated from the blood of a thicket rat in Katanga (now Zaire) Africa, by I. H. Vinke in 1948. The parasite is readily grown in laboratory mice and rats, where it shows a preference for reticolocytes (Blood smear of P. berghei). Infections are asynchronous with a periodicity of 22-25 hours. The parasite may be transmitted in the laboratory by Anopheles stephensi mosquitoes, but is extremely sensitive to temperatures outside the range 19-21oC. Very few genetically distinct isolates of P. berghei are available (WHO Rodent Malaria List) making this species the least valuable for genetic crossing work. o The P. berghei genome P. berghei, like all other species of malaria parasite studied so far, has 14 chromosomes which can be separated by pulsed-field gel electrophoresis. Genome size is estimated to be close to that of P. falciparum at 25-30 Mb. The genome is extremely A/T rich at approximately 80% A/T, comparable to that of P. falciparum. o University of Florida EST and GSS Project The University of Florida have initiated a gene sequence tag project of P. berghei to complement an ongoing gene sequence tag project in P. vivax (http://parasite.vetmed.ufl.edu). The aim is to tag 10,000 genes in the genome of P. berghei and to assign putative identities to each gene where possible. Last updated: Dec 1, 2000 |