Comparison of Genome Sequence of PVY Isolates with Biological Properties

The whole RNA genomes of six European Potato virus Y (PVY) isolates, representing isolates of the PVY O , PVY N and PVY NTN subgroups, were sequenced and the reactions of a range of tobacco and potato cultivars after the inoculation were determined. One isolate induced symptoms of veinal necrosis wh...

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Bibliographic Details
Published in:American journal of potato research 2009-06, Vol.86 (3), p.227-238
Main Authors: Barker, Hugh, McGeachy, Kara D, Toplak, Nataša, Gruden, Kristina, Žel, Jana, Browning, Isla
Format: Article
Language:English
Subjects:
Agriculture
Agronomy. Soil science and plant productions
Biological and medical sciences
Biological properties
Biomedical and Life Sciences
drug crops
Fundamental and applied biological sciences. Psychology
genome
genomics
host plants
host range
Life Sciences
microbial genetics
molecular sequence data
necrosis
Nicotiana tabacum
nucleotide sequences
Phytopathology. Animal pests. Plant and forest protection
Plant Breeding/Biotechnology
Plant Genetics and Genomics
Plant Pathology
Plant Sciences
population genetics
Potato virus Y
potatoes
sequence analysis
signs and symptoms (plants)
Solanum tuberosum
tobacco
vegetable crops
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Summary:The whole RNA genomes of six European Potato virus Y (PVY) isolates, representing isolates of the PVY O , PVY N and PVY NTN subgroups, were sequenced and the reactions of a range of tobacco and potato cultivars after the inoculation were determined. One isolate induced symptoms of veinal necrosis when inoculated to tobacco, but reacted with PVY O - specific antibodies. The genome sequence of this isolate showed that it had a recombinant genome comprising large sections of sequence that are characteristic of N and O sub-group isolates. Another isolate caused mosaic symptoms when inoculated to tobacco, and reacted with PVY N - specific antibodies. The nucleotide sequence of its genome was very closely related to the genome sequence published for two potato-infecting PVY isolates from North America. These three isolates are the members of interesting group NA (North American). They have highly similar genome sequences throughout their length, but biologically represent isolates from the PVY O , PVY N and PVY NTN subgroups. The occurrence of these biologically diverse isolates with their highly homologous genomes brings into question the exact nature of gene structure in relation to function.
ISSN:1099-209X
1874-9380
DOI:10.1007/s12230-009-9076-0