Búsqueda de interactores para la caracterización de los genes ParPMC implicados en la resistencia a Sharka en albaricoquero

La enfermedad de la Sharka, causada por el potyvirus Plum pox virus (PPV) es el factor más limitante para el cultivo de frutales de hueso. El desarrollo de variedades resistentes se ha propuesto como la mejor solución para el control de esta enfermedad. Sin embargo, se conocen pocas fuentes de resistencia que puedan ser de utilidad para su incorporación a los programas de mejora. En el caso de albaricoque se identificaron una decena de variedades norteamericanas que muestran resistencia a PPV. Combinando datos genéticos y genómicos propusimos a los genes ParPMC1 y ParPMC2 como genes de susceptibilidad cuyo silenciamiento confiere resistencia a PPV

Erratum: Polo-Oltra et al. Cost-Effective and Time-Efficient Molecular Assisted Selection for PPV Resistance in Apricot Based on <i>ParPMC2</i> Allele-Specific PCR. <i>Agronomy</i> 2020, <i>10</i>, 1292

The authors would like to make the following correction to the published paper [...

Cost-Effective and Time-Efficient Molecular Assisted Selection for Ppv Resistance in Apricot Based on ParPMC2 Allele-Specific PCR

© 2020 by the authors.Plum pox virus (PPV) is the most important limiting factor for apricot (Prunus armeniaca L.) production worldwide, and development of resistant cultivars has been proven to be the best solution in the long-term. However, just like in other woody species, apricot breeding is highly time and space demanding, and this is particularly true for PPV resistance phenotyping. Therefore, marker-assisted selection (MAS) may be very helpful to speed up breeding programs. Tightly linked ParPMC1 and ParPMC2, meprin and TRAF-C homology (MATH)-domain-containing genes have been proposed as host susceptibility genes required for PPV infection. Contribution of additional genes to PPV resistance cannot be discarded, but all available studies undoubtedly show a strong correlation between ParPMC2-resistant alleles (ParPMC2res) and PPV resistance. The ParPMC2res allele was shown to carry a 5-bp deletion (ParPMC2-del) within the second exon that has been characterized as a molecular marker suitable for MAS (PMC2). Based on this finding, we propose here a method for PPV resistance selection in apricot by combining high-throughput DNA extraction of 384 samples in 2 working days and the allele-specific genotyping of PMC2 on agarose gel. Moreover, the PMC2 genotype has been determined by PCR or by using whole-genome sequences (WGS) in 175 apricot accessions. These results were complemented with phenotypic and/or genotypic data available in the literature to reach a total of 325 apricot accessions. As a whole, we conclude that this is a time-efficient, cost-effective and straightforward method for PPV resistance screening that can be highly useful for apricot breeding programs.This research was funded by the Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA)-FEDER (RTA2017-00011-C03-01). Á.P.O. was funded by a fellowship cofinanced by the Generalitat Valenciana and European Social Fund (2014–2020) (DOCV 8426/19.11.2018).Peer reviewe