Limited Genetic Diversity in North American Isolates of Phytophthora erythroseptica Pathogenic to Potato Based on RAPD Analysis.

@article{Peters2005LimitedGD,
  title={Limited Genetic Diversity in North American Isolates of Phytophthora erythroseptica Pathogenic to Potato Based on RAPD Analysis.},
  author={R. Peters and Rod Clark and A. D. Coffin and A. V. Sturz and D. Lambert and Jeffery S. Miller},
  journal={Plant disease},
  year={2005},
  volume={89 4},
  pages={
          380-384
        }
}
Pink rot of potato (Solanum tuberosum), caused by Phytophthora erythroseptica, is found wherever potatoes are grown, and in the last decade, it has reemerged as an economically important disease in Canada and the United States. A selection of isolates of P. erythroseptica from major potato-growing regions in North America, namely Prince Edward Island and New Brunswick, Canada, and Maine and Idaho, U.S.A., was assessed for genetic diversity with randomly chosen decanucleotide primers which were… Expand
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References

SHOWING 1-10 OF 41 REFERENCES
Sensitivity of North American Isolates of Phytophthora erythroseptica and Pythium ultimum to Mefenoxam (Metalaxyl).
TLDR
Observations suggest that pink rot and leak could become significant problems in the future, particularly in those areas where resistance has been detected, and monitoring the sensitivity of the pathogen population to mefenoxam in all production areas should be considered and integrated as a part of the overall disease management strategy. Expand
Tuber response of six potato cultivars to inoculation with Phytophthora erythroseptica, the causal agent of pink rot
TLDR
Information on differences in the tolerance of potato cultivars to pink rot may influence the choice of cultivars grown in fields that are poorly drained or with a history of the disease. Expand
Metalaxyl sensitivity of isolates of Phytophthora erythroseptica in Prince Edward Island
TLDR
Inoculation of potato tubers from plants treated with foliar applications of metalaxyl in the field indicated that compounds inhibitory toMetalaxyl-sensitive isolates of P. erythroseptica were present in the periderm, even after 4 months' storage, which will be critical in maintaining metalAXyl as an effective chemical for control of this pathogen. Expand
Widespread distribution and probable origin of resistance to metalaxyl in clonal genotypes of Phytophthora infestans in the United States and Western Canada
TLDR
Evidence for selection of metalaxyl-resistant mutants within clonal lineages was detected among the limited sample of isolates from Europe and Israel, and strongly supports the hypothesis that resistance in the United States and Canada originated by migration, rather than by mutation and selection after migration. Expand
Changes in race structure of Canadian populations ofPhytophthora infestans based on specific virulence to selected potato clones
TLDR
Virulence genes which overcame host resistance conferred by R8 were the rarest in the populations studied and implies that the introduction of cultivars with specific R genes for resistance would be an ineffective control measure. Expand
Analysis of pathogenicity and genetic variation among Phytophthora sojae isolates using RAPD
TLDR
Fifty-five Phytophthora sojae isolates were collected from soil samples and diseased soybean plants from Illinois, Indiana, Iowa, and Minnesota in 1994 and 1995 and a dendrogram depicting the relatedness of the isolates was constructed using UPGMA. Expand
USE OF ALLOZYME MARKERS TO DETERMINE GENOTYPES OF PHYTOPHTHORA INFESTANS IN CANADA
A comparison of allozyme banding patterns at two loci, for glucose-6-phosphate isomerase (Gpi) and peptidase (Pep), with markers for mating type, metalaxyl sensitivity, and cultural morphologyExpand
Assessment of Resistance of Tubers of Potato Cultivars to Phytophthora erythroseptica and Pythium ultimum.
TLDR
Cultivar susceptibility should be considered when making disease management decisions, particularly in fields where these soilborne diseases are a recurring problem. Expand
Panglobal distribution of a single clonal lineage of the Irish potato famine fungus.
  • S. Goodwin, B. Cohen, W. Fry
  • Biology, Medicine
  • Proceedings of the National Academy of Sciences of the United States of America
  • 1994
TLDR
The genetic data are consistent with the hypothesis that the initial migration of P. infestans in the 1840s was from Mexico to the United States and that only a single genetic individual was transported to Europe and subsequently to the rest of the world. Expand
CHARACTERIZATION OF CHANGES IN POPULATIONS OF PHYTOPHTHORA INFESTANS IN CANADA USING MATING TYPE AND METALAXYL SENSITIVITY MARKERS
TLDR
Isolates of Phytophthora infestans were obtained from individual fields of potato and tomato and from potato storages across Canada in 1994, 1995, and 1996 and revealed the changing nature of P. infested populations in Canada. Expand
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