Dissecting the genetic basis of wheat blast resistance in the Brazilian wheat cultivar BR 18-Terena.
Head resistance
Magnaporthe oryzae
Quantitative trait loci
Seedling resistance
Single nucleotide polymorphism (SNP) genotyping
Triticum aestivum
Wheat blast
Journal
BMC plant biology
ISSN: 1471-2229
Titre abrégé: BMC Plant Biol
Pays: England
ID NLM: 100967807
Informations de publication
Date de publication:
27 Aug 2020
27 Aug 2020
Historique:
received:
23
01
2020
accepted:
12
08
2020
entrez:
29
8
2020
pubmed:
29
8
2020
medline:
20
2
2021
Statut:
epublish
Résumé
Wheat blast, caused by Magnaporthe oryzae Triticum (MoT) pathotype, is a global threat to wheat (Triticum aestivum L.) production. Few blast resistance (R) genes have been identified to date, therefore assessing potential sources of resistance in wheat is important. The Brazilian wheat cultivar BR 18-Terena is considered one of the best sources of resistance to blast and has been widely used in Brazilian breeding programmes, however the underlying genetics of this resistance are unknown. BR 18-Terena was used as the common parent in the development of two recombinant inbred line (RIL) F This study suggests that BR 18-Terena possesses quantitative resistance to wheat blast, with nine QTL associated with resistance at either the seedling or heading stage being detected. Wheat blast resistance is also largely tissue-specific. Identification of durable quantitative resistances which can be combined with race-specific R gene-mediated resistance is critical to effectively control wheat blast. Collectively, this work facilitates marker-assisted selection to develop new varieties for cultivation in regions at risk from this emerging disease.
Sections du résumé
BACKGROUND
BACKGROUND
Wheat blast, caused by Magnaporthe oryzae Triticum (MoT) pathotype, is a global threat to wheat (Triticum aestivum L.) production. Few blast resistance (R) genes have been identified to date, therefore assessing potential sources of resistance in wheat is important. The Brazilian wheat cultivar BR 18-Terena is considered one of the best sources of resistance to blast and has been widely used in Brazilian breeding programmes, however the underlying genetics of this resistance are unknown.
RESULTS
RESULTS
BR 18-Terena was used as the common parent in the development of two recombinant inbred line (RIL) F
CONCLUSIONS
CONCLUSIONS
This study suggests that BR 18-Terena possesses quantitative resistance to wheat blast, with nine QTL associated with resistance at either the seedling or heading stage being detected. Wheat blast resistance is also largely tissue-specific. Identification of durable quantitative resistances which can be combined with race-specific R gene-mediated resistance is critical to effectively control wheat blast. Collectively, this work facilitates marker-assisted selection to develop new varieties for cultivation in regions at risk from this emerging disease.
Identifiants
pubmed: 32854622
doi: 10.1186/s12870-020-02592-0
pii: 10.1186/s12870-020-02592-0
pmc: PMC7451118
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
398Subventions
Organisme : Biotechnology and Biological Sciences Research Council
ID : BBS/E/J/00000606
Pays : United Kingdom
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