Association mapping in sunflower for sclerotinia head rot resistance

Background: Sclerotinia Head Rot (SHR) is one of the most damaging diseases of sunflower in Europe, Argentina, and USA, causing average yield reductions of 10 to 20 %, but leading to total production loss under favorable environmental conditions for the pathogen. Association Mapping (AM) is a promis...

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Autores principales:	Fusari, Corina Mariana, Moreno, María Valeria, Hopp, Horacio Esteban, Heinz, Ruth Amelia, Lia, Verónica Viviana
Publicado:	2012
Materias:	Brassica napus Helianthus Sclerotinia Sclerotinia sclerotiorum plant DNA article Ascomycetes chromosome map crop disease resistance DNA sequence genetics genotype immunology inbreeding methodology microbiology molecular genetics nucleotide sequence pathogenicity phenotype plant disease plant gene quantitative trait locus rapeseed sunflower Ascomycota Base Sequence Chromosome Mapping Crops, Agricultural Disease Resistance DNA, Plant Genes, Plant Genotype Inbreeding Molecular Sequence Data Phenotype Plant Diseases Quantitative Trait Loci Sequence Analysis, DNA
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14712229_v12_n_p_Fusari http://hdl.handle.net/20.500.12110/paper_14712229_v12_n_p_Fusari
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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spelling	paper:paper_14712229_v12_n_p_Fusari2023-06-08T16:17:16Z Association mapping in sunflower for sclerotinia head rot resistance Fusari, Corina Mariana Moreno, María Valeria Hopp, Horacio Esteban Heinz, Ruth Amelia Lia, Verónica Viviana Brassica napus Helianthus Sclerotinia Sclerotinia sclerotiorum plant DNA article Ascomycetes chromosome map crop disease resistance DNA sequence genetics genotype immunology inbreeding methodology microbiology molecular genetics nucleotide sequence pathogenicity phenotype plant disease plant gene quantitative trait locus rapeseed sunflower Ascomycota Base Sequence Brassica napus Chromosome Mapping Crops, Agricultural Disease Resistance DNA, Plant Genes, Plant Genotype Helianthus Inbreeding Molecular Sequence Data Phenotype Plant Diseases Quantitative Trait Loci Sequence Analysis, DNA Background: Sclerotinia Head Rot (SHR) is one of the most damaging diseases of sunflower in Europe, Argentina, and USA, causing average yield reductions of 10 to 20 %, but leading to total production loss under favorable environmental conditions for the pathogen. Association Mapping (AM) is a promising choice for Quantitative Trait Locus (QTL) mapping, as it detects relationships between phenotypic variation and gene polymorphisms in existing germplasm without development of mapping populations. This article reports the identification of QTL for resistance to SHR based on candidate gene AM.Results: A collection of 94 sunflower inbred lines were tested for SHR under field conditions using assisted inoculation with the fungal pathogen Sclerotinia sclerotiorum. Given that no biological mechanisms or biochemical pathways have been clearly identified for SHR, 43 candidate genes were selected based on previous transcript profiling studies in sunflower and Brassica napus infected with S. sclerotiorum. Associations among SHR incidence and haplotype polymorphisms in 16 candidate genes were tested using Mixed Linear Models (MLM) that account for population structure and kinship relationships. This approach allowed detection of a significant association between the candidate gene HaRIC_B and SHR incidence (P < 0.01), accounting for a SHR incidence reduction of about 20 %.Conclusions: These results suggest that AM will be useful in dissecting other complex traits in sunflower, thus providing a valuable tool to assist in crop breeding. © 2012 Fusari et al.; licensee Biomed Central Ltd. Fil:Fusari, C.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Moreno, M.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Hopp, E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Heinz, R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Lia, V.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14712229_v12_n_p_Fusari http://hdl.handle.net/20.500.12110/paper_14712229_v12_n_p_Fusari
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Brassica napus Helianthus Sclerotinia Sclerotinia sclerotiorum plant DNA article Ascomycetes chromosome map crop disease resistance DNA sequence genetics genotype immunology inbreeding methodology microbiology molecular genetics nucleotide sequence pathogenicity phenotype plant disease plant gene quantitative trait locus rapeseed sunflower Ascomycota Base Sequence Brassica napus Chromosome Mapping Crops, Agricultural Disease Resistance DNA, Plant Genes, Plant Genotype Helianthus Inbreeding Molecular Sequence Data Phenotype Plant Diseases Quantitative Trait Loci Sequence Analysis, DNA
spellingShingle	Brassica napus Helianthus Sclerotinia Sclerotinia sclerotiorum plant DNA article Ascomycetes chromosome map crop disease resistance DNA sequence genetics genotype immunology inbreeding methodology microbiology molecular genetics nucleotide sequence pathogenicity phenotype plant disease plant gene quantitative trait locus rapeseed sunflower Ascomycota Base Sequence Brassica napus Chromosome Mapping Crops, Agricultural Disease Resistance DNA, Plant Genes, Plant Genotype Helianthus Inbreeding Molecular Sequence Data Phenotype Plant Diseases Quantitative Trait Loci Sequence Analysis, DNA Fusari, Corina Mariana Moreno, María Valeria Hopp, Horacio Esteban Heinz, Ruth Amelia Lia, Verónica Viviana Association mapping in sunflower for sclerotinia head rot resistance
topic_facet	Brassica napus Helianthus Sclerotinia Sclerotinia sclerotiorum plant DNA article Ascomycetes chromosome map crop disease resistance DNA sequence genetics genotype immunology inbreeding methodology microbiology molecular genetics nucleotide sequence pathogenicity phenotype plant disease plant gene quantitative trait locus rapeseed sunflower Ascomycota Base Sequence Brassica napus Chromosome Mapping Crops, Agricultural Disease Resistance DNA, Plant Genes, Plant Genotype Helianthus Inbreeding Molecular Sequence Data Phenotype Plant Diseases Quantitative Trait Loci Sequence Analysis, DNA
description	Background: Sclerotinia Head Rot (SHR) is one of the most damaging diseases of sunflower in Europe, Argentina, and USA, causing average yield reductions of 10 to 20 %, but leading to total production loss under favorable environmental conditions for the pathogen. Association Mapping (AM) is a promising choice for Quantitative Trait Locus (QTL) mapping, as it detects relationships between phenotypic variation and gene polymorphisms in existing germplasm without development of mapping populations. This article reports the identification of QTL for resistance to SHR based on candidate gene AM.Results: A collection of 94 sunflower inbred lines were tested for SHR under field conditions using assisted inoculation with the fungal pathogen Sclerotinia sclerotiorum. Given that no biological mechanisms or biochemical pathways have been clearly identified for SHR, 43 candidate genes were selected based on previous transcript profiling studies in sunflower and Brassica napus infected with S. sclerotiorum. Associations among SHR incidence and haplotype polymorphisms in 16 candidate genes were tested using Mixed Linear Models (MLM) that account for population structure and kinship relationships. This approach allowed detection of a significant association between the candidate gene HaRIC_B and SHR incidence (P < 0.01), accounting for a SHR incidence reduction of about 20 %.Conclusions: These results suggest that AM will be useful in dissecting other complex traits in sunflower, thus providing a valuable tool to assist in crop breeding. © 2012 Fusari et al.; licensee Biomed Central Ltd.
author	Fusari, Corina Mariana Moreno, María Valeria Hopp, Horacio Esteban Heinz, Ruth Amelia Lia, Verónica Viviana
author_facet	Fusari, Corina Mariana Moreno, María Valeria Hopp, Horacio Esteban Heinz, Ruth Amelia Lia, Verónica Viviana
author_sort	Fusari, Corina Mariana
title	Association mapping in sunflower for sclerotinia head rot resistance
title_short	Association mapping in sunflower for sclerotinia head rot resistance
title_full	Association mapping in sunflower for sclerotinia head rot resistance
title_fullStr	Association mapping in sunflower for sclerotinia head rot resistance
title_full_unstemmed	Association mapping in sunflower for sclerotinia head rot resistance
title_sort	association mapping in sunflower for sclerotinia head rot resistance
publishDate	2012
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14712229_v12_n_p_Fusari http://hdl.handle.net/20.500.12110/paper_14712229_v12_n_p_Fusari
work_keys_str_mv	AT fusaricorinamariana associationmappinginsunflowerforsclerotiniaheadrotresistance AT morenomariavaleria associationmappinginsunflowerforsclerotiniaheadrotresistance AT hopphoracioesteban associationmappinginsunflowerforsclerotiniaheadrotresistance AT heinzruthamelia associationmappinginsunflowerforsclerotiniaheadrotresistance AT liaveronicaviviana associationmappinginsunflowerforsclerotiniaheadrotresistance
_version_	1768545159968980992

Association mapping in sunflower for sclerotinia head rot resistance

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