title: RNA probes detect nucleotide sequence homology between members of two different nairovirus serogroups.
abstract: Cloned cDNA derived from the small (S) and medium (M) genomic RNA segments of Dugbe (DUG) virus, isolate ArD44313, a member of the Nairobi sheep disease (NSD) serogroup of nairoviruses (family, Bunyaviridae) was used to prepare 32P-labelled DNA and RNA probes. The S and M segments of six isolates of DUG virus all hybridised to both DNA and RNA probes, although the M segment of isolate KT281/75 reacted only weakly. Of nine other nairoviruses tested, representing all the six other serogroups within the Nairovirus genus, none hybridised to the DNA probes. However, under conditions of low stringency, the DUG S and M RNA probes hybridised to the respective S and M segments of Ganjam (GAN) virus (another member of the NSD serogroup). The DUG S RNA probe also hybridised to the S segments of Crimean-Congo haemorrhagic fever (CCHF) virus and Hazara (HAZ) virus (members of the CCHF serogroup). The indicated sequence relationships between DUG, GAN, CCHF and HAZ viruses show that the NSD serogroup is more closely related to members of the CCHF serogroup than it is to nairoviruses of the other five serogroups.
authors.affiliation: NERC Institute of Virology and Environmental Microbiology, Oxford, U.K.
authors.forename: A C
authors.initials: AC
authors.lastname: Marriott
authors.forename: V K
authors.initials: VK
authors.lastname: Ward
authors.forename: S
authors.initials: S
authors.lastname: Higgs
authors.forename: P A
authors.initials: PA
authors.lastname: Nuttall
mesh_terms: D000818:Animals; D002043:Bunyaviridae / Q000145:classification / Q000235:genetics*; D003001:Cloning, Molecular; D015342:DNA Probes; D003225:Hemorrhagic Fever Virus, Crimean-Congo / Q000145:classification / Q000235:genetics; D009265:Nairobi Sheep Disease / Q000382:microbiology; D009693:Nucleic Acid Hybridization; D015347:RNA Probes; D012367:RNA, Viral / Q000235:genetics*; D012689:Sequence Homology, Nucleic Acid; D012756:Sheep
chemical_list: D015342:DNA Probes; D015347:RNA Probes; D012367:RNA, Viral