Fecha/hora: 16/06/2024 07:08:48

Biblioteca(s): | INIA La Estanzuela.
Fecha corriente: | 29/10/2021
Fecha de la última actualización: | 01/11/2021
Autoria: | CROPANO, C.; MANZANARES, CH.; YATES, S.; COPETTI, D.; DO CANTO, J.; LÜBBERSTEDT, T.; KOCH, M.; STUDER, B.
Afiliación: | CLAUDIO CROPANO, Molecular Plant Breeding, Institute of Agricultural Sciences, ETH Zurich, Zurich, Switzerland;Deutsche Saatveredelung AG, Lippstadt, Germany.; CHLOÉ MANZANARES, Molecular Plant Breeding, Institute of Agricultural Sciences, ETH Zurich, Zurich, Switzerland.; STEVEN YATES, Molecular Plant Breeding, Institute of Agricultural Sciences, ETH Zurich, Zurich, Switzerland.; DARIO COPETTI, Molecular Plant Breeding, Institute of Agricultural Sciences, ETH Zurich, Zurich, Switzerland.; JAVIER DO CANTO FAGUNDEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; THOMAS LÜBBERSTEDT, Department of Agronomy, Iowa State University, Ames, IA, United States.; MICHAEL KOCH, Deutsche Saatveredelung AG, Lippstadt, Germany.; BRUNO STUDER, Molecular Plant Breeding, Institute of Agricultural Sciences, ETH Zurich, Zurich, Switzerland.
Título: | Identification of Candidate Genes for Self-Compatibility in Perennial Ryegrass (Lolium perenne L.).
Año de publicación: | 2021
Fuente/Imprenta: | Frontiers in Plant Science, 15 october 2021, Volume 12, Article number 707901. OPEN ACCESS. Doi: https://doi.org/10.3389/fpls.2021.707901
DOI: | 10.3389/fpls.2021.707901
Idioma: | Inglés

Notas:

Article history: Received: 10 May 2021/Accepted: 30 August 2021/Published: 15 October 2021. This work was supported by the European Union?s Horizon 2020 Research and Innovation Programme Marie Sk?odowskaCurie grant agreement no 722338 - PlantHUB and by the Swiss
National Science Foundation (grant number 310030_197708).

Contenido:

Abstract: Self-incompatibility (SI) is a genetic mechanism preventing self-pollination in ?40% of plant species. Two multiallelic loci, called S and Z, control the gametophytic SI system of the grass family (Poaceae), which contains all major forage grasses. Loci independent
from S and Z have been reported to disrupt SI and lead to self-compatibility (SC). A locus causing SC in perennial ryegrass (Lolium perenne L.) was previously mapped on linkage group (LG) 5 in an F2 population segregating for SC. Using a subset of the same population (n = 68), we first performed low-resolution quantitative trait locus (QTL) mapping to exclude the presence of additional, previously undetected contributors to SC. The previously reported QTL on LG 5 explained 38.4% of the phenotypic variation, and no significant contribution from other genomic regions was found. This was verified by the presence of significantly distorted markers in the region overlapping with the QTL. Second, we fine mapped the QTL to 0.26 centimorgan (cM) using additional 2,056 plants and 23 novel sequence-based markers. Using Italian ryegrass (Lolium multiflorum Lam.) genome assembly as a reference, the markers flanking SC were estimated to span a ?3 Mb region encoding for 57 predicted genes. Among these, seven genes were proposed as relevant candidate genes based on their annotation and function described in previous studies. Our study is a step forward to identify SC genes in forage grasses and provides diagnostic markers for marker-assisted introgression of SC into elite germplasm.

Palabras-Clave: | Fine mapping, candidate genes; Perennial ryegrass (Lolium perenne L.); Segregation distortion; Self-compatibility (SC); Self-incompatibility (SI).
Thesagro: | RAIGRAS PERENNE.
Categoría del tema: | --
URL: | http://www.ainfo.inia.uy/digital/bitstream/item/16088/1/Cropano2021.Candidate-genes-SC-ryegrass.pdf
Registro original: | INIA La Estanzuela (LE)
Ejemplares: | LE - (103462-1) - PXI - AP - DD - PP/Frontiers in Plant Science,/2021 -  -  - DIS