ArticleTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik2006
Development of a codominant CAPS marker linked to PRSV-P resistance in highland papaya.
Article in TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Molecular approaches for the management of papaya ringspot virus infecting papaya: a comprehensive review.Molecular biology reports · 2024Review
- Comparative transcriptomics and genomic analyses reveal differential gene expression related toFrontiers in plant science · 2022Article
- Development of plants resistant toBreeding science · 2016Article
- Gene technology for papaya ringspot virus disease management.TheScientificWorldJournal · 2014Review
- Article
- Assessment of genetic and epigenetic changes following cryopreservation in papaya.Plant cell reports · 2008Article
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Development of resistant papaya varieties is widely considered the best strategy for long-term control of the papaya ringspot virus type P (PRSV-P). Several species of "highland papaya" from the related genus Vasconcellea exhibit complete resistance to PRSV-P, and present a valuable source of resistance genes with potential for application in Carica papaya. The objectives of this study were two fold; to identify molecular markers linked to a previously characterised PRSV-P resistance gene in V. cundinamarcensis (psrv-1), and to develop codominant marker based strategies for reliable selection of PRSV-P resistant genotypes. Using a bulked segregant analysis approach, dominant randomly amplified DNA fingerprint (RAF) markers linked to prsv-1 were revealed in the resistant DNA bulk, which comprised F2 progeny from a V. parviflora (susceptible) x V. cundinamarcensis (resistant) interspecific cross. One marker, Opk4_1r, mapped adjacent to the prsv-1 locus at 5.4 cM, while a second, Opa11_5r, collocated with it. Sequence characterisation of the Opk4_1r marker permitted its conversion into a codominant CAPS marker (PsiIk4), diagnostic for the resistant genotype based on digestion with the restriction endonuclease PsiI. This marker mapped within 2 cM of the prsv-1 locus. Psilk4 was shown to correctly identify resistant genotypes 99% of the time when applied to interspecific F2 progeny segregating for the resistant character, and has potential for application in breeding programs aimed to deliver the PRSV-P resistance gene from V. cundinamarcensis into C. papaya.
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