Genome-wide association mapping of genetic factors controlling Septoria tritici blotch resistance and their associations with plant height and heading date in wheat

Septoria tritici blotch (STB), caused by the ascomycete fungus Zymoseptoria tritici (also known as Mycosphaerella graminicola), is one of the most devastating foliar wheat diseases worldwide. Host resistance is the most effective strategy for management of the disease. A factor that complicates the...

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Detalles Bibliográficos
Autores principales:	Gerard, Guillermo Sebastián, Börner, Andreas, Lohwasser, Ulrike, Simón, María Rosa
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2017
Materias:	Ciencias Agrarias DArT Triticum aestivum Zymoseptoria tritici
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/134978
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-134978
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Agrarias DArT Triticum aestivum Zymoseptoria tritici
spellingShingle	Ciencias Agrarias DArT Triticum aestivum Zymoseptoria tritici Gerard, Guillermo Sebastián Börner, Andreas Lohwasser, Ulrike Simón, María Rosa Genome-wide association mapping of genetic factors controlling Septoria tritici blotch resistance and their associations with plant height and heading date in wheat
topic_facet	Ciencias Agrarias DArT Triticum aestivum Zymoseptoria tritici
description	Septoria tritici blotch (STB), caused by the ascomycete fungus Zymoseptoria tritici (also known as Mycosphaerella graminicola), is one of the most devastating foliar wheat diseases worldwide. Host resistance is the most effective strategy for management of the disease. A factor that complicates the determination of resistance is its reported interaction with heading date (Hd) and plant height (Ph). In this study, we report findings from a genome-wide association study of resistance to STB in a world-wide collection of 96 wheat accessions. The collection was evaluated under conditions of artificial infection for seedling and adult plant STB resistance, Hd and Ph in field trials. Marker-trait associations (MTAs) were detected using a mixed linear model. STB disease severities showed significant phenotypic variation. In total, 73 MTAs involving STB resistance were detected. The chromosomal locations of some of them were similar to known Stb genes or quantitative trait loci; whereas others were detected in new genomic regions. The field experiment showed evidence of genetic association between STB resistance and Hd, but only for a few genotypes. This was corroborated at the molecular level, where a total of eight genomic regions associated with STB resistance were located in similar positions to MTAs for Hd. New genomic regions associated with STB resistance found here could be useful in wheat breeding aimed at controlling STB after validation in relevant genetic backgrounds
format	Articulo Articulo
author	Gerard, Guillermo Sebastián Börner, Andreas Lohwasser, Ulrike Simón, María Rosa
author_facet	Gerard, Guillermo Sebastián Börner, Andreas Lohwasser, Ulrike Simón, María Rosa
author_sort	Gerard, Guillermo Sebastián
title	Genome-wide association mapping of genetic factors controlling Septoria tritici blotch resistance and their associations with plant height and heading date in wheat
title_short	Genome-wide association mapping of genetic factors controlling Septoria tritici blotch resistance and their associations with plant height and heading date in wheat
title_full	Genome-wide association mapping of genetic factors controlling Septoria tritici blotch resistance and their associations with plant height and heading date in wheat
title_fullStr	Genome-wide association mapping of genetic factors controlling Septoria tritici blotch resistance and their associations with plant height and heading date in wheat
title_full_unstemmed	Genome-wide association mapping of genetic factors controlling Septoria tritici blotch resistance and their associations with plant height and heading date in wheat
title_sort	genome-wide association mapping of genetic factors controlling septoria tritici blotch resistance and their associations with plant height and heading date in wheat
publishDate	2017
url	http://sedici.unlp.edu.ar/handle/10915/134978
work_keys_str_mv	AT gerardguillermosebastian genomewideassociationmappingofgeneticfactorscontrollingseptoriatriticiblotchresistanceandtheirassociationswithplantheightandheadingdateinwheat AT bornerandreas genomewideassociationmappingofgeneticfactorscontrollingseptoriatriticiblotchresistanceandtheirassociationswithplantheightandheadingdateinwheat AT lohwasserulrike genomewideassociationmappingofgeneticfactorscontrollingseptoriatriticiblotchresistanceandtheirassociationswithplantheightandheadingdateinwheat AT simonmariarosa genomewideassociationmappingofgeneticfactorscontrollingseptoriatriticiblotchresistanceandtheirassociationswithplantheightandheadingdateinwheat
bdutipo_str	Repositorios
_version_	1764820455873576961

Genome-wide association mapping of genetic factors controlling Septoria tritici blotch resistance and their associations with plant height and heading date in wheat

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