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dc.contributor.authorDie, Jose V.
dc.contributor.authorCastro, Patricia
dc.contributor.authorMillán, Teresa
dc.contributor.authorGil, Juan
dc.date.accessioned2019-02-25T12:25:45Z
dc.date.available2019-02-25T12:25:45Z
dc.date.issued2018
dc.identifier.urihttp://hdl.handle.net/10396/17950
dc.description.abstractGarden asparagus is an important horticultural plant worldwide. It is, however, susceptible to a variety of diseases, which can affect the potential yield, spear quality, and lifespan of production fields. Screening studies have identified resistant germplasm. The genetic resistance is usually complex, and the genes underlying that resistance are still unknown. Most often, disease resistance is determined by resistance genes (R). The most predominant R-genes contain nucleotide binding site and leucine-rich repeat (NBS-LRR) domains. Using bioinformatics and data mining approaches, we identified and characterized 68 NBS predicted proteins encoded by 49 different loci in the asparagus genome. The NBS-encoding genes were grouped into seven distinct classes based on their domain architecture. The NBS genes are unevenly distributed through the genome and nearly 50% of the genes are present in clusters. Chromosome 6 is significantly NBS-enriched and one single cluster hosts 10% of the genes. Phylogenetic analysis points to their diversification into three families during their evolution. Recent duplications are likely to have dominated the NBS expansion with both tandem genes and duplication events across multiple chromosomes. Transcriptome sequencing data provided evidence for their transcription and tissue-specific expression. The total number of cis-regulatory elements as well as their relative positions within the NBS promoters suggests a complex transcriptional network regulating defense responses. Our study provides a strong groundwork for the isolation of candidate R-genes in garden asparagus.es_ES
dc.format.mimetypeapplication/pdfes_ES
dc.language.isoenges_ES
dc.publisherMDPIes_ES
dc.rightshttps://creativecommons.org/licenses/by-nc-nd/4.0/es_ES
dc.sourceGenes 9(12), 568 (2018)es_ES
dc.subjectAsparaguses_ES
dc.subjectCoiled coiles_ES
dc.subjectDisease resistancees_ES
dc.subjectDuplicationses_ES
dc.subjectNucleotide binding sitees_ES
dc.subjectPlant defensees_ES
dc.subjectPromoteres_ES
dc.subjectRegulatory elementses_ES
dc.titleSegmental and Tandem Duplications Driving the Recent NBS-LRR Gene Expansion in the Asparagus Genomees_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherversionhttp://dx.doi.org/10.3390/genes9120568es_ES
dc.relation.projectIDGobierno de España. AGL2014-57575-Res_ES
dc.relation.projectIDUnión Europea. RFP2015-00005-00-00es_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES


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