Genome-wide association analysis of Mexican bread wheat landraces for resistance to yellow and stem rust

Autor: Daisy Basandra, Neftali Pardo, Priyanka Gupta, Deepmala Sehgal, Sukhwinder Singh, Mandeep Randhawa, Achala Sharma, Carolina Sansaloni, Hifzur Rahman, Prashant Vikram, Sanjay Singh, Puja Srivastava, Sridhar Bhavani, Tanvi Sood
Rok vydání: 2021
Předmět:
0106 biological sciences
0301 basic medicine
Mexican People
Linkage disequilibrium
Heredity
Stem rust
01 natural sciences
Genome
Linkage Disequilibrium
Medicine and Health Sciences
Ethnicities
Triticum
Disease Resistance
Genetics
Multidisciplinary
biology
Chromosome Mapping
Eukaryota
food and beverages
Genomics
Bread
Plants
Population groupings
Genetic Mapping
Phenotype
Wheat
Medicine
Genome
Plant
Research Article
Science
Quantitative Trait Loci
Plant disease resistance
Quantitative trait locus
03 medical and health sciences
Genome-Wide Association Studies
Grasses
Plant breeding
Allele
Plant Diseases
Nutrition
Genetic association
Basidiomycota
Organisms
Biology and Life Sciences
Computational Biology
Latin American people
Human Genetics
Genome Analysis
biology.organism_classification
Diet
Plant Breeding
030104 developmental biology
Haplotypes
Genetic Loci
Food
People and places
Genome-Wide Association Study
010606 plant biology & botany
Zdroj: PLoS ONE, Vol 16, Iss 1, p e0246015 (2021)
PLoS ONE
ISSN: 1932-6203
Popis: Deploying under-utilized landraces in wheat breeding has been advocated to accelerate genetic gains in current era of genomics assisted breeding. Mexican bread wheat landraces (Creole wheats) represent an important resource for the discovery of novel alleles including disease resistance. A core set of 1,098 Mexican landraces was subjected to multi-location testing for rust diseases in India, Mexico and Kenya. The landrace core set showed a continuous variation for yellow (YR) and stem rust (SR) disease severity. Principal component analysis differentiated Mexican landraces into three groups based on their respective collection sites. Linkage disequilibrium (LD) decay varied from 10 to 32 Mb across chromosomes with an averge of 23Mb across whole genome. Genome-wide association analysis revealed marker-trait associations for YR resistance in India and Mexico as well as for SR resistance in Kenya. In addition, significant additive-additive interaction effects were observed for both YR and SR resistance including genomic regions on chromosomes 1BL and 3BS, which co-locate with pleiotropic genes Yr29/Lr46/Sr58/Pm39/Ltn2 and Sr2/Yr30/Lr27, respectively. Study reports novel genomic associations for YR (chromosomes 1AL, 2BS, and 3BL) and SR (chromosomes 2AL, 4DS, and 5DS). The novel findings in Creole wheat landraces can be efficiently utilized for the wheat genetic improvement.
Databáze: OpenAIRE
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