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A major quantitative trait locus for increasing cadmium-specific concentration in rice grain is located on the short arm of chromosome 7.
J Exp Bot. 2010 Mar; 61(3):923-34.JE

Abstract

Large phenotypic variations in the cadmium (Cd) concentration of rice grains and shoots have been observed. However, the genetic control of Cd accumulation remains poorly understood. Quantitative trait loci (QTLs) determining the grain Cd concentration of rice grown in a Cd-polluted paddy field were identified. Using a mapping population consisting of 85 backcross inbred lines derived from a cross between the low-Cd-accumulating cultivar Sasanishiki (japonica) and high-Cd-accumulating cultivar Habataki (indica), two QTLs for increasing grain Cd concentration were found on chromosomes 2 and 7. A major-effect QTL, qGCd7 (QTL for grain Cd on chromosome 7), was detected on the short arm of chromosome 7. It accounted for 35.5% of all phenotypic variance in backcross inbred lines. qGCd7 was not genetically related to any QTLs for concentrations of essential trace metals (Cu, Fe, Mn, and Zn) or those for agronomic traits such as heading date, suggesting that this QTL is specific to Cd. Furthermore, the existence of qGCd7 was confirmed using chromosome segment substitution lines (CSSLs) and an F(2) population from a cross between the target CSSL and Sasanishiki grown in a Cd-polluted paddy soil. To our knowledge, qGCd7 is a novel QTL with major effects for increasing grain Cd concentrations.

Authors+Show Affiliations

Soil Environment Division, National Institute for Agro-Environmental Sciences, 3-1-3 Kannondai, Tsukuba, Ibaraki 305-8604, Japan. isatoru@affrc.go.jpNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

20022924

Citation

Ishikawa, Satoru, et al. "A Major Quantitative Trait Locus for Increasing Cadmium-specific Concentration in Rice Grain Is Located On the Short Arm of Chromosome 7." Journal of Experimental Botany, vol. 61, no. 3, 2010, pp. 923-34.
Ishikawa S, Abe T, Kuramata M, et al. A major quantitative trait locus for increasing cadmium-specific concentration in rice grain is located on the short arm of chromosome 7. J Exp Bot. 2010;61(3):923-34.
Ishikawa, S., Abe, T., Kuramata, M., Yamaguchi, M., Ando, T., Yamamoto, T., & Yano, M. (2010). A major quantitative trait locus for increasing cadmium-specific concentration in rice grain is located on the short arm of chromosome 7. Journal of Experimental Botany, 61(3), 923-34. https://doi.org/10.1093/jxb/erp360
Ishikawa S, et al. A Major Quantitative Trait Locus for Increasing Cadmium-specific Concentration in Rice Grain Is Located On the Short Arm of Chromosome 7. J Exp Bot. 2010;61(3):923-34. PubMed PMID: 20022924.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A major quantitative trait locus for increasing cadmium-specific concentration in rice grain is located on the short arm of chromosome 7. AU - Ishikawa,Satoru, AU - Abe,Tadashi, AU - Kuramata,Masato, AU - Yamaguchi,Masayuki, AU - Ando,Tsuyu, AU - Yamamoto,Toshio, AU - Yano,Masahiro, Y1 - 2009/12/18/ PY - 2009/12/22/entrez PY - 2009/12/22/pubmed PY - 2010/4/23/medline SP - 923 EP - 34 JF - Journal of experimental botany JO - J Exp Bot VL - 61 IS - 3 N2 - Large phenotypic variations in the cadmium (Cd) concentration of rice grains and shoots have been observed. However, the genetic control of Cd accumulation remains poorly understood. Quantitative trait loci (QTLs) determining the grain Cd concentration of rice grown in a Cd-polluted paddy field were identified. Using a mapping population consisting of 85 backcross inbred lines derived from a cross between the low-Cd-accumulating cultivar Sasanishiki (japonica) and high-Cd-accumulating cultivar Habataki (indica), two QTLs for increasing grain Cd concentration were found on chromosomes 2 and 7. A major-effect QTL, qGCd7 (QTL for grain Cd on chromosome 7), was detected on the short arm of chromosome 7. It accounted for 35.5% of all phenotypic variance in backcross inbred lines. qGCd7 was not genetically related to any QTLs for concentrations of essential trace metals (Cu, Fe, Mn, and Zn) or those for agronomic traits such as heading date, suggesting that this QTL is specific to Cd. Furthermore, the existence of qGCd7 was confirmed using chromosome segment substitution lines (CSSLs) and an F(2) population from a cross between the target CSSL and Sasanishiki grown in a Cd-polluted paddy soil. To our knowledge, qGCd7 is a novel QTL with major effects for increasing grain Cd concentrations. SN - 1460-2431 UR - https://www.unboundmedicine.com/medline/citation/20022924/A_major_quantitative_trait_locus_for_increasing_cadmium_specific_concentration_in_rice_grain_is_located_on_the_short_arm_of_chromosome_7_ L2 - https://academic.oup.com/jxb/article-lookup/doi/10.1093/jxb/erp360 DB - PRIME DP - Unbound Medicine ER -