Meta-QTL analysis of seed iron and zinc concentration and content in common bean (Phaseolus vulgaris L.)

Key message Twelve meta-QTL for seed Fe and Zn concentration and/or content were identified from 87 QTL originating from seven population grown in sixteen field trials. These meta-QTL include 2 specific to iron, 2 specific to zinc and 8 that co-localize for iron and zinc concentrations and/or conten...

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Veröffentlicht in:Theoretical and applied genetics 2018-08, Vol.131 (8), p.1645-1658
Hauptverfasser: Izquierdo, Paulo, Astudillo, Carolina, Blair, Matthew W., Iqbal, Asif M., Raatz, Bodo, Cichy, Karen A.
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container_end_page 1658
container_issue 8
container_start_page 1645
container_title Theoretical and applied genetics
container_volume 131
creator Izquierdo, Paulo
Astudillo, Carolina
Blair, Matthew W.
Iqbal, Asif M.
Raatz, Bodo
Cichy, Karen A.
description Key message Twelve meta-QTL for seed Fe and Zn concentration and/or content were identified from 87 QTL originating from seven population grown in sixteen field trials. These meta-QTL include 2 specific to iron, 2 specific to zinc and 8 that co-localize for iron and zinc concentrations and/or content. Common bean ( Phaseolus vulgaris L.) is the most important legume for human consumption worldwide and it is an important source of microelements, especially iron and zinc. Bean biofortification breeding programs develop new varieties with high levels of Fe and Zn targeted for countries with human micronutrient deficiencies. Biofortification efforts thus far have relied on phenotypic selection of raw seed mineral concentrations in advanced generations. While numerous quantitative trait loci (QTL) studies have been conducted to identify genomic regions associated with increased Fe and Zn concentration in seeds, these results have yet to be employed for marker-assisted breeding. The objective of this study was to conduct a meta-analysis from seven QTL studies in Andean and Middle American intra- and inter-gene pool populations to identify the regions in the genome that control the Fe and Zn levels in seeds. Two meta-QTL specific to Fe and two meta-QTL specific to Zn were identified. Additionally, eight Meta QTL that co-localized for Fe and Zn concentration and/or content were identified across seven chromosomes. The Fe and Zn shared meta-QTL could be useful candidates for marker-assisted breeding to simultaneously increase seed Fe and Zn. The physical positions for 12 individual meta-QTL were identified and within five of the meta-QTL, candidate genes were identified from six gene families that have been associated with transport of iron and zinc in plants.
doi_str_mv 10.1007/s00122-018-3104-8
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source MEDLINE; Springer Nature - Complete Springer Journals
subjects Agriculture
Biochemistry
Biomedical and Life Sciences
Biotechnology
Breeding
Chromosome Mapping
Chromosomes
Gene families
Gene Pool
Genetic aspects
Genomes
Genotype & phenotype
Health aspects
Iron
Iron (Nutrient)
Iron - analysis
Legumes
Life Sciences
Nutritional aspects
Original Article
Phaseolus - genetics
Phaseolus vulgaris
Phenotype
Plant Biochemistry
Plant Breeding
Plant Breeding/Biotechnology
Plant Genetics and Genomics
Quantitative Trait Loci
Seeds
Seeds - chemistry
Zinc
Zinc (Nutrient)
Zinc - analysis
title Meta-QTL analysis of seed iron and zinc concentration and content in common bean (Phaseolus vulgaris L.)
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