title: Emergence of new genotype and diversity of Theileria orientalis parasites from bovines in India.
abstract: Bovine theileriosis is a serious threat to livestock worldwide. Uncertainty around species prevalence, antigenic diversity and genotypes of strains make it difficult to assess the impact of this parasite and to provide necessary treatment. We aimed to characterize genotypic diversity, phylogeny and prevalence of Theileria orientalis parasites from the states of Telangana and Andhra Pradesh, India by collecting bovine blood samples from the major districts of the two states. Bioinformatic analysis identified antigenic diversity among the prevalent parasite strains using major piroplasm surface protein (MPSP) gene. Our study revealed a prevalence rate of 4.8% (n=41/862) of T. orientalis parasites in bovine animals and a new genotype of T. orientalis parasite which was not previously reported in India. The emergence of these new genotypes could be an explanation for the frequent outbreaks of bovine theileriosis. Further, whole genome sequencing of T. orientalis strains will help to elucidate the genetic factors relevant for transmissibility and virulence as well as vaccine and new drug development.
authors: National Institute of Animal Biotechnology-DBT, Hyderabad, India.
authors: Neena
authors: N
authors: George
authors: National Institute of Animal Biotechnology-DBT, Hyderabad, India.
authors: Vasundhra
authors: V
authors: Bhandari
authors: National Institute of Animal Biotechnology-DBT, Hyderabad, India.
authors: D Peddi
authors: DP
authors: Reddy
authors: National Institute of Animal Biotechnology-DBT, Hyderabad, India. Electronic address: paresh@niab.org.in.
authors: Paresh
authors: P
authors: Sharma
mesh_terms: D000818:Animals; D000953:Antigens, Protozoan / Q000737:chemistry / Q000235:genetics; D001483:Base Sequence; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology* / Q000469:parasitology*; D014644:Genetic Variation; D005838:Genotype; D062306:Geography, Medical; D007194:India / Q000453:epidemiology; D008969:Molecular Sequence Data; D010802:Phylogeny; D058974:Phylogeography; D015995:Prevalence; D015800:Protozoan Proteins / Q000737:chemistry / Q000235:genetics; D016415:Sequence Alignment; D016794:Theileria / Q000145:classification* / Q000235:genetics*; D013801:Theileriasis / Q000453:epidemiology* / Q000469:parasitology*
chemical_list: D000953:Antigens, Protozoan; D015800:Protozoan Proteins; C115173:major piroplasm surface protein, Theileria
keywords: Antigenic diversity; Major piroplasm surface protein; Phylogeny; Theileriosis