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Genome-wide sequencing of Phytophthora lateralis reveals genetic variation among isolates from Lawson cypress (Chamaecyparis lawsoniana) in Northern Ireland
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Quinn, Lisa, O'Neill, Paul A., Harrison, James, Paskiewicz, Konrad H., McCracken, Alistair R., Cooke, Louise R., Grant, Murray and Studholme, David J. (2013) Genome-wide sequencing of Phytophthora lateralis reveals genetic variation among isolates from Lawson cypress (Chamaecyparis lawsoniana) in Northern Ireland. FEMS Microbiology Letters, 344 (2). pp. 179-185. doi:10.1111/1574-6968.12179 ISSN 0378-1097.
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Official URL: http://dx.doi.org/10.1111/1574-6968.12179
Abstract
Phytophthora lateralis is a fungus-like (oomycete) pathogen of trees in the family Cupressaceae, including Chamaecyparis lawsoniana (Lawson cypress or Port Orford cedar). Known in North America since the 1920s, presumably having been accidentally introduced from its assumed East Asian centre of origin, until recently, this pathogen has not been identified causing disease in Europe except for a few isolated outbreaks. However, since 2010, there have been several reports of infection of C. lawsoniana by P. lateralis in the United Kingdom, including Northern Ireland. We sequenced the genomes of four isolates of P. lateralis from two sites in Northern Ireland in 2011. Comparison with the closely related tree and shrub pathogen P. ramorum (cause of ramorum disease of larch and other species in the UK) shows that P. lateralis shares 91.47% nucleotide sequence identity over the core conserved compartments of the genome. The genomes of the four Northern Ireland isolates are almost identical, but we identified several single-nucleotide polymorphisms (SNPs) that distinguish between isolates, thereby presenting potential molecular markers of use for tracking routes of spread and in epidemiological studies. Our data reveal very low rates of heterozygosity (compared with P. ramorum), consistent with inbreeding within this P. lateralis population.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||
| Journal or Publication Title: | FEMS Microbiology Letters | ||||
| Publisher: | Wiley-Blackwell Publishing Ltd. | ||||
| ISSN: | 0378-1097 | ||||
| Official Date: | 2013 | ||||
| Dates: |
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| Volume: | 344 | ||||
| Number: | 2 | ||||
| Page Range: | pp. 179-185 | ||||
| DOI: | 10.1111/1574-6968.12179 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access |
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