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Genome-wide association mapping of cadmium accumulation in different organs of barley.
New Phytol. 2015 Nov; 208(3):817-29.NP

Abstract

The threshold value of cadmium (Cd) concentration in grains of barley (Hordeum vulgare) is the lowest among cereal crops; however, it is poorly understood how Cd accumulation in barley grain is genetically controlled. We investigated genotypic variation in Cd accumulation of different organs in 100 accessions from a subset of the barley core collection using both hydroponic and Cd-contaminated soil culture. We also performed a genome-wide association (GWA) mapping for Cd accumulation in different organs. A large genotypic variation in the Cd concentration was found in all organs. There was a good correlation between shoot Cd of solution and soil culture, the shoot Cd and grain Cd, but no correlation between the root Cd and grain Cd. GWA mapping detected 9 quantitative trait loci (QTL) for root Cd, 21 for shoot Cd, 14 for root-to-shoot translocation and 15 for grain Cd. A common QTL for the shoot Cd and root-to-shoot translocation was found at 132.6 cM on chromosome 5H. Two major QTL for grain Cd were identified on chromosome 2H and chromosome 5H. The genetic variation in Cd accumulation and major QTL detected provide useful information helpful for cloning candidate genes for Cd accumulation and breeding low-Cd barley cultivars in future.

Authors+Show Affiliations

Institute of Plant Science and Resources, Okayama University, Chuo 2-20-1, Kurashiki, 710-0046, Japan.Institute of Plant Science and Resources, Okayama University, Chuo 2-20-1, Kurashiki, 710-0046, Japan.Institute of Plant Science and Resources, Okayama University, Chuo 2-20-1, Kurashiki, 710-0046, Japan.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26061418

Citation

Wu, Dezhi, et al. "Genome-wide Association Mapping of Cadmium Accumulation in Different Organs of Barley." The New Phytologist, vol. 208, no. 3, 2015, pp. 817-29.
Wu D, Sato K, Ma JF. Genome-wide association mapping of cadmium accumulation in different organs of barley. New Phytol. 2015;208(3):817-29.
Wu, D., Sato, K., & Ma, J. F. (2015). Genome-wide association mapping of cadmium accumulation in different organs of barley. The New Phytologist, 208(3), 817-29. https://doi.org/10.1111/nph.13512
Wu D, Sato K, Ma JF. Genome-wide Association Mapping of Cadmium Accumulation in Different Organs of Barley. New Phytol. 2015;208(3):817-29. PubMed PMID: 26061418.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Genome-wide association mapping of cadmium accumulation in different organs of barley. AU - Wu,Dezhi, AU - Sato,Kazuhiro, AU - Ma,Jian Feng, Y1 - 2015/06/09/ PY - 2015/03/16/received PY - 2015/05/07/accepted PY - 2015/6/11/entrez PY - 2015/6/11/pubmed PY - 2016/8/16/medline KW - barley KW - cadmium (Cd) KW - core collection KW - genome-wide association (GWA) mapping KW - genotypic difference KW - quantitative trait loci (QTL) KW - straw SP - 817 EP - 29 JF - The New phytologist JO - New Phytol VL - 208 IS - 3 N2 - The threshold value of cadmium (Cd) concentration in grains of barley (Hordeum vulgare) is the lowest among cereal crops; however, it is poorly understood how Cd accumulation in barley grain is genetically controlled. We investigated genotypic variation in Cd accumulation of different organs in 100 accessions from a subset of the barley core collection using both hydroponic and Cd-contaminated soil culture. We also performed a genome-wide association (GWA) mapping for Cd accumulation in different organs. A large genotypic variation in the Cd concentration was found in all organs. There was a good correlation between shoot Cd of solution and soil culture, the shoot Cd and grain Cd, but no correlation between the root Cd and grain Cd. GWA mapping detected 9 quantitative trait loci (QTL) for root Cd, 21 for shoot Cd, 14 for root-to-shoot translocation and 15 for grain Cd. A common QTL for the shoot Cd and root-to-shoot translocation was found at 132.6 cM on chromosome 5H. Two major QTL for grain Cd were identified on chromosome 2H and chromosome 5H. The genetic variation in Cd accumulation and major QTL detected provide useful information helpful for cloning candidate genes for Cd accumulation and breeding low-Cd barley cultivars in future. SN - 1469-8137 UR - https://www.unboundmedicine.com/medline/citation/26061418/Genome_wide_association_mapping_of_cadmium_accumulation_in_different_organs_of_barley_ DB - PRIME DP - Unbound Medicine ER -