Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/161179
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Self-(in)compatibility in apricot germplasm is controlled by two major loci, S and M |
Autor: | Muñoz-Sanz, Juan Vicente; Zuriaga, Elena; López, Inmaculada; Badenes, María Luisa; Romero, Carlos CSIC ORCID | Palabras clave: | Prunus Modifiers S-alleles Apricot M-locus Self-(in)compatibility S-locus |
Fecha de publicación: | 2017 | Editor: | BioMed Central | Citación: | BMC Plant Biology 17(1): 82 (2017) | Resumen: | [Background]: Apricot (Prunus armeniaca L.) exhibits a gametophytic self-incompatibility (GSI) system and it is mostly considered as a self-incompatible species though numerous self-compatible exceptions occur. These are mainly linked to the mutated S -haplotype carrying an insertion in the S-locus F-box gene that leads to a truncated protein. However, two S-locus unlinked pollen-part mutations (PPMs) termed m and m' have also been reported to confer self-compatibility (SC) in the apricot cultivars 'Canino' and 'Katy', respectively. This work was aimed to explore whether other additional mutations might explain SC in apricot as well. [Results]: A set of 67 cultivars/accessions with different geographic origins were analyzed by PCR-screening of the S- and M-loci genotypes, contrasting results with the available phenotype data. Up to 20S-alleles, including 3 new ones, were detected and sequence analysis revealed interesting synonymies and homonymies in particular with S-alleles found in Chinese cultivars. Haplotype analysis performed by genotyping and determining linkage-phases of 7 SSR markers, showed that the m and m' PPMs are linked to the same m haplotype. Results indicate that m -haplotype is tightly associated with SC in apricot germplasm being quite frequent in Europe and North-America. However, its prevalence is lower than that for S in terms of frequency and geographic distribution. Structures of 34 additional M-haplotypes were inferred and analyzed to depict phylogenetic relationships and M was found to be the closest haplotype to m Genotyping results showed that four cultivars classified as self-compatible do not have neither the S - nor the m -haplotype. [Conclusions]: According to apricot germplasm S-genotyping, a loss of genetic diversity affecting the S-locus has been produced probably due to crop dissemination. Genotyping and phenotyping data support that self-(in)compatibility in apricot relies mainly on the S- but also on the M-locus. Regarding this latter, we have shown that the m -haplotype associated with SC is shared by 'Canino', 'Katy' and many other cultivars. Its origin is still unknown but phylogenetic analysis supports that m arose later in time than S from a widely distributed M-haplotype. Lastly, other mutants putatively carrying new mutations conferring SC have also been identified deserving future research. | Versión del editor: | https://doi.org/10.1186/s12870-017-1027-1 | URI: | http://hdl.handle.net/10261/161179 | DOI: | 10.1186/s12870-017-1027-1 | Identificadores: | doi: 10.1186/s12870-017-1027-1 e-issn: 1471-2229 |
Aparece en las colecciones: | (IBMCP) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
selfin.pdf | 1,76 MB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
PubMed Central
Citations
9
checked on 19-mar-2024
SCOPUSTM
Citations
27
checked on 13-abr-2024
WEB OF SCIENCETM
Citations
23
checked on 25-feb-2024
Page view(s)
290
checked on 19-abr-2024
Download(s)
397
checked on 19-abr-2024