Spring Is Coming: Genetic Analyses of the Bud Break Date Locus Reveal Candidate Genes From the Cold Perception Pathway to Dormancy Release in Apple ( Malus × domestica Borkh.).

Autor: Miotto YE; Department of Crop Science, Agronomy School, Federal University of Rio Grande do Sul, Porto Alegre, Brazil., Tessele C; Department of Crop Science, Agronomy School, Federal University of Rio Grande do Sul, Porto Alegre, Brazil., Czermainski ABC; Embrapa Uva e Vinho, Bento Gonçalves, Brazil., Porto DD; Embrapa Uva e Vinho, Bento Gonçalves, Brazil., Falavigna VDS; Embrapa Uva e Vinho, Bento Gonçalves, Brazil.; Graduate Program in Cell and Molecular Biology, Centro de Biotecnologia, Federal University of Rio Grande do Sul, Porto Alegre, Brazil., Sartor T; Embrapa Uva e Vinho, Bento Gonçalves, Brazil.; Graduate Program in Cell and Molecular Biology, Centro de Biotecnologia, Federal University of Rio Grande do Sul, Porto Alegre, Brazil., Cattani AM; Embrapa Uva e Vinho, Bento Gonçalves, Brazil.; Graduate Program in Cell and Molecular Biology, Centro de Biotecnologia, Federal University of Rio Grande do Sul, Porto Alegre, Brazil., Delatorre CA; Department of Crop Science, Agronomy School, Federal University of Rio Grande do Sul, Porto Alegre, Brazil., de Alencar SA; Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil., da Silva-Junior OB; Embrapa Recursos Genéticos e Biotecnologia, Brasília, Brazil., Togawa RC; Embrapa Recursos Genéticos e Biotecnologia, Brasília, Brazil., Costa MMDC; Embrapa Recursos Genéticos e Biotecnologia, Brasília, Brazil., Pappas GJ Jr; Department of Cell Biology, Universidade de Brasília, Brasília, Brazil., Grynberg P; Embrapa Recursos Genéticos e Biotecnologia, Brasília, Brazil., de Oliveira PRD; Embrapa Uva e Vinho, Bento Gonçalves, Brazil., Kvitschal MV; Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina - Epagri - Estação Experimental de Caçador, Caçador, Brazil., Denardi F; Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina - Epagri - Estação Experimental de Caçador, Caçador, Brazil., Buffon V; Embrapa Uva e Vinho, Bento Gonçalves, Brazil., Revers LF; Embrapa Uva e Vinho, Bento Gonçalves, Brazil.; Graduate Program in Cell and Molecular Biology, Centro de Biotecnologia, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
Jazyk: angličtina
Zdroj: Frontiers in plant science [Front Plant Sci] 2019 Mar 07; Vol. 10, pp. 33. Date of Electronic Publication: 2019 Mar 07 (Print Publication: 2019).
DOI: 10.3389/fpls.2019.00033
Abstrakt: Chilling requirement (CR) for bud dormancy completion determines the time of bud break in apple ( Malus × domestica Borkh.). The molecular control of bud dormancy is highly heritable, suggesting a strong genetic control of the trait. An available Infinium II SNP platform for genotyping containing 8,788 single nucleotide polymorphic markers was employed, and linkage maps were constructed in a F 1 cross from the low CR M13/91 and the moderate CR cv. Fred Hough. These maps were used to identify quantitative trait loci (QTL) for bud break date as a trait related to dormancy release. A major QTL for bud break was detected at the beginning of linkage group 9 (LG9). This QTL remained stable during seven seasons in two different growing sites. To increase mapping efficiency in detecting contributing genes underlying this QTL, 182 additional SNP markers located at the locus for bud break were used. Combining linkage mapping and structural characterization of the region, the high proportion of the phenotypic variance in the trait explained by the QTL is related to the coincident positioning of Arabidopsis orthologs for ICE1, FLC , and PRE1 protein-coding genes. The proximity of these genes from the most explanatory markers of this QTL for bud break suggests potential genetic additive effects, reinforcing the hypothesis of inter-dependent mechanisms controlling dormancy induction and release in apple trees.
Databáze: MEDLINE
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