Resequencing theVrs1 gene in Spanish barley landraces revealed reversion of six-rowed to two-rowed spike
Visualitza/Obre
Autor/a
Casas, Ana M.
Contreras-Moreira, Bruno
Cantalapiedra, Carlos P.
Sakuma, Shun
Gracia, María Pilar
Moralejo, Marian
Molina-Cano, José Luis
Komatsuda, Takao
Igartua, Ernesto
Data de publicació
2018-04-12ISSN
1380-3743
Resum
Six-rowed spike 1 (Vrs1) is a gene of major importance for barley breeding and germplasm management as it is the main gene determining spike row-type (2-rowed vs. 6-rowed). This is a widely used DUS trait, and has been often associated to phenotypic traits beyond spike type. Comprehensive re-sequencing Vrs1 revealed three two-rowed alleles (Vrs1.b2; Vrs1.b3; Vrs1.t1) and four six-rowed (vrs1.a1; vrs1.a2; vrs1.a3; vrs1.a4) in the natural population. However, the current knowledge about Vrs1 alleles and its distribution among Spanish barley subpopulations is still underexploited. We analyzed the gene in a panel of 215 genotypes, made of Spanish landraces and European cultivars. Among 143 six-rowed accessions, 57 had the vrs1.a1 allele, 83 were vrs1.a2, and three showed the vrs1.a3 allele. Vrs1.b3 was found in most two-rowed accessions, and a new allele was observed in 7 out of 50 two-rowed Spanish landraces. This allele, named Vrs1.b5, contains a ‘T’ insertion in exon 2, originally proposed as the causal mutation giving rise to the six-row vrs1.a2 allele, but has an additional upstream deletion that results in the change of 15 amino acids and a potentially functional protein. We conclude that eight Vrs1 alleles (Vrs1.b2, Vrs1.b3, Vrs1.b5, Vrs1.t1, vrs1.a1, vrs1.a2, vrs1.a3, vrs1.a4) discriminate two and six-rowed barleys. The markers described will be useful for DUS identification, plant breeders, and other crop scientists.
Tipus de document
Article
Versió del document
Versió acceptada
Llengua
English
Matèries (CDU)
633 - Cultius i produccions
Pàgines
25
Publicat per
Springer
Publicat a
Molecular Breeding
Citació
Casas, Ana M., Bruno Contreras-Moreira, Carlos P. Cantalapiedra, Shun Sakuma, María Pilar Gracia, Marian Moralejo, José Luis Molina-Cano, Takao Komatsuda, and Ernesto Igartua. 2018. "Resequencing Thevrs1 Gene In Spanish Barley Landraces Revealed Reversion Of Six-Rowed To Two-Rowed Spike". Molecular Breeding 38 (5). Springer Nature. doi:10.1007/s11032-018-0816-z.
Número de l'acord de la subvenció
MICINN/Programa Nacional de Proyectos de Investigación Fundamental/AGL2010-21929/ES/DESCUBRIMIENTO DE NUEVA VARIABILIDAD PARA LA MEJORA DE LA CEBADA EN ESPAÑA/
MINECO/Programa Estatal de I+D+I orientada a los retos de la sociedad/AGL2013-48756-R/ES/DESCUBRIMIENTO Y UTILIZACION DE LA VARIABILIDAD GENETICA QUE DETERMINA LA ADAPTACION DE LA CEBADA MEDIANTE HERRAMIENTAS GENETICAS, GENOMICAS/
INIA/Programa Nacional de Proyectos de Investigación Fundamental/RFP2012-00015-00-00/ES/Mantenimiento de las colecciones de germoplasma en semilla de la Estación Experimental de Aula Dei (CSIC)/
INIA/Programa Nacional de Proyectos de Investigación Fundamental/RTA2012-00033-C03-02/ES/Obtención de variedades de cebada de calidad con amplia adaptación en España/
MICINN/Programa Nacional de Internacionalización de la I+D/EUI2009-04075/ES/EXPLOITING GENETIC VARIATION FOR RESISTANCE TO IMPORTANT PATHOGENS IN BARLEY/
MICINN/Programa Nacional de Formación de Recursos Humanos/BES-2011-045905/ES/ /
Programa
Cultius Extensius Sostenibles
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