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Article

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

1
Citriculture and Plant Production Center, Instituto Valenciano de Investigaciones Agrarias (IVIA), CV-315, km 10.7, 46113 Moncada, Valencia, Spain
2
Instituto de Biología Molecular y Celular de Plantas (IBMCP), Consejo Superior de Investigaciones Científicas (CSIC)—Universidad Politécnica de Valencia (UPV), Ingeniero Fausto Elio s/n, 46022 Valencia, Spain
*
Author to whom correspondence should be addressed.
Agronomy 2020, 10(9), 1292; https://doi.org/10.3390/agronomy10091292
Received: 31 July 2020 / Revised: 25 August 2020 / Accepted: 25 August 2020 / Published: 31 August 2020
(This article belongs to the Special Issue Molecular Marker Technology for Crop Improvement)
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. View Full-Text
Keywords: apricot; MAS; breeding; MATH; PPV resistance; agarose; ParPMC; ParPMC2-del apricot; MAS; breeding; MATH; PPV resistance; agarose; ParPMC; ParPMC2-del
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MDPI and ACS Style

Polo-Oltra, Á.; Romero, C.; López, I.; Badenes, M.L.; Zuriaga, E. Cost-Effective and Time-Efficient Molecular Assisted Selection for Ppv Resistance in Apricot Based on ParPMC2 Allele-Specific PCR. Agronomy 2020, 10, 1292. https://doi.org/10.3390/agronomy10091292

AMA Style

Polo-Oltra Á, Romero C, López I, Badenes ML, Zuriaga E. Cost-Effective and Time-Efficient Molecular Assisted Selection for Ppv Resistance in Apricot Based on ParPMC2 Allele-Specific PCR. Agronomy. 2020; 10(9):1292. https://doi.org/10.3390/agronomy10091292

Chicago/Turabian Style

Polo-Oltra, Ángela; Romero, Carlos; López, Inmaculada; Badenes, María L.; Zuriaga, Elena. 2020. "Cost-Effective and Time-Efficient Molecular Assisted Selection for Ppv Resistance in Apricot Based on ParPMC2 Allele-Specific PCR" Agronomy 10, no. 9: 1292. https://doi.org/10.3390/agronomy10091292

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