Linked Life Data

15604435

Source:http://linkedlifedata.com/resource/pubmed/id/15604435

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
Pt 1
pubmed:dateCreated
2004-12-17
pubmed:databankReference
pubmed:abstractText
A second genotype of Mamestra configurata nucleopolyhedrovirus-A (MacoNPV-A), variant 90/4 (v90/4), was identified due to its altered restriction endonuclease profile and reduced virulence for the host insect, M. configurata, relative to the archetypal genotype, MacoNPV-A variant 90/2 (v90/2). To investigate the genetic differences between these two variants, the genome of v90/4 was sequenced completely. The MacoNPV-A v90/4 genome is 153 656 bp in size, 1404 bp smaller than the v90/2 genome. Sequence alignment showed that there was 99.5 % nucleotide sequence identity between the genomes of v90/4 and v90/2. However, the v90/4 genome has 521 point mutations and numerous deletions and insertions when compared to the genome of v90/2. Gene content and organization in the genome of v90/4 is identical to that in v90/2, except for an additional bro gene that is found in the v90/2 genome. The region between hr1 and orf31 shows the greatest divergence between the two genomes. This region contains three bro genes, which are among the most variable baculovirus genes. These results, together with other published data, suggest that bro genes may influence baculovirus genome diversity and may be involved in recombination between baculovirus genomes. Many ambiguous residues found in the v90/4 sequence also reveal the presence of 214 sequence polymorphisms. Sequence analysis of cloned HindIII fragments of the original MacoNPV field isolate that the 90/4 variant was derived from indicates that v90/4 is an authentic variant and may represent approximately 25 % of the genotypes in the field isolate. These results provide evidence of extensive sequence variation among the individual genomes comprising a natural baculovirus outbreak in a continuous host population.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0022-1317
pubmed:author
pubmed:issnType
Print
pubmed:volume
86
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
91-105
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Complete comparative genomic analysis of two field isolates of Mamestra configurata nucleopolyhedrovirus-A.
pubmed:affiliation
Pacific Agri-Food Research Centre, AAFC, Summerland, BC, Canada.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't