Identification of QTLs associated with cadmium concentration in rice grains

Hu, Dawei; Sheng, Zhonghua; Li, Qianlong; Chen, Wei; Wei, Xiaosheng; Xie, Lihong; Jiao, Guiai; Shao, Gaoneng; Wang, Jianlong; Tang, Shaoqing; Hu, Peisong

doi:10.1016/s2095-3119(17)61847-1

Cited by 17 publications

(8 citation statements)

References 38 publications

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“…Quantitative trait locus (QTL) mapping, a powerful tool to study multivariate genes for complex agronomic traits, has been successfully used to identify loci that control Cd accumulation in rice ( Hu et al, 2018 ). Several QTLs for Cd tolerance have been identified through different genetic populations and phenotypic analysis methods.…”

Section: Genetic Variations and Qtls In Absorption And Distribution O...mentioning

confidence: 99%

“…QTL analysis of Cd accumulation using an F2 population from Anjana Dhan and Nipponbare identified a QTL on chromosome 7 with a significant effect on Cd accumulation, explaining 85.6% of the phenotypic variation in Cd concentration in the shoots of the F2 population ( Ueno et al, 2009b ). Hu et al identified certain QTLs related to Cd content in brown rice (CCBR) and Cd content in milled rice (CCMR) using a double haploid (DH) population of Zhongjiadao 17 × D50, of which qCCBR2-1 / qCCBR2-2 and qCCBR9-1 / qCCBR9-2 were found to be responsible for CCBR, whereas qCCMR5-1 / qCCMR5-2 were found to be responsible for CCMR in several fields and pot experiments ( Hu et al, 2018 ). Zhao et al detected 14 Cd accumulation QTLs in rice grains from 312 rice accessions by a genome-wide association study (GWAS) ( Zhao et al, 2018 ), of which 3 QTLs were first identified in this study, and 4 QTLs were the previously cloned genes ( OsNRAMP1 , OsNRAMP5 , OsHMA3 , and LCD ) that mediate Cd accumulation in rice ( Miyadate et al, 2011 ; Shimo et al, 2011 ; Takahashi et al, 2011 ; Sasaki et al, 2012 ).…”

Section: Genetic Variations and Qtls In Absorption And Distribution O...mentioning

confidence: 99%

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Advances in molecular mechanisms underlying cadmium uptake and translocation in rice

et al. 2022

Front. Plant Sci.

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The increasing cadmium (Cd) pollution in paddy fields has severely threatened China’s ecological and food safety. Cultivation of low Cd accumulation varieties to reduce Cd content in rice or cultivation of Cd-tolerant varieties for phytoremediation are considered effective methods to control Cd pollution in paddy fields. However, the underlying molecular mechanism of Cd absorption and transport by rice plants needs to be deciphered to cultivate these varieties. Here, we summarized the molecular mechanisms underlying Cd absorption and transport in rice, as well as the variation of Cd accumulation among rice varieties, the QTLs related to Cd accumulation in rice, and discusses the direction of future research.

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Section: Genetic Variations and Qtls In Absorption And Distribution O...mentioning

confidence: 99%

Section: Genetic Variations and Qtls In Absorption And Distribution O...mentioning

confidence: 99%

Advances in molecular mechanisms underlying cadmium uptake and translocation in rice

et al. 2022

Front. Plant Sci.

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“…Genetic and physiological investigations suggest that the major QTL detected on the long arm of chromosome 11 is responsible for the specific translocation of Cd from the roots to the shoots [52]. Chromosome 7 harbors several putative metal transporters encoding genes such as OsZIP8, OsHMA3, and OsNramp1 [42,56]. Three major QTL (qCCBR1-1, qCCBR4-2, and qCCBR9-1) associated with Cd concentration in brown rice and another one named qCCMR11-2 in the milled rice explained more than 20% of the phenotypic variance respectively.…”

Section: Current Trends In Breeding Programsmentioning

confidence: 99%

Reducing Cadmium Accumulation in Plants: Structure–Function Relations and Tissue-Specific Operation of Transporters in the Spotlight

Huang

Duan

et al. 2020

Plants

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Cadmium (Cd) is present in many soils and, when entering the food chain, represents a major health threat to humans. Reducing Cd accumulation in plants is complicated by the fact that most known Cd transporters also operate in the transport of essential nutrients such as Zn, Fe, Mn, or Cu. This work summarizes the current knowledge of mechanisms mediating Cd uptake, radial transport, and translocation within the plant. It is concluded that real progress in the field may be only achieved if the transport of Cd and the above beneficial micronutrients is uncoupled, and we discuss the possible ways of achieving this goal. Accordingly, we suggest that the major focus of research in the field should be on the structure–function relations of various transporter isoforms and the functional assessment of their tissue-specific operation. Of specific importance are two tissues. The first one is a xylem parenchyma in plant roots; a major “controller” of Cd loading into the xylem and its transport to the shoot. The second one is a phloem tissue that operates in the last step of a metal transport. Another promising and currently underexplored avenue is to understand the role of non-selective cation channels in Cd uptake and reveal mechanisms of their regulation.

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“…Using 46 chromosome segment substitution lines (CSSLs), Abe et al (2013) detected a major QTL, qlGCd3, on the long arm of chromosome 3, which was responsible for reduced Cd concentration in rice grains. Using 204 RILs, Hu et al (2018) identified 22 QTLs affecting the accumulation of Cd, Cu, Fe, Mn, and Zn in brown rice, among which qCd5 was a novel QTL that regulated low Cd accumulation. Luo et al (2018) identified a QTL named CAL1 (Cd accumulation in leaf 1) on chromosome 2 using a doubled haploid (DH) population derived from TN1 and CJ06.…”

Section: Identification Of Molecular Markers For Low CD Accumulation mentioning

confidence: 99%

Breeding for low cadmium accumulation cereals

Chen

2020

J. Zhejiang Univ. Sci. B

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Cadmium (Cd) is an element that is nonessential and extremely toxic to both plants and human beings. Soil contaminated with Cd has adverse impacts on crop yields and threatens human health via the food chain. Cultivation of low-Cd cultivars has been of particular interest and is one of the most cost-effective and promising approaches to minimize human dietary intake of Cd. Low-Cd crop cultivars should meet particular criteria, including acceptable yield and quality, and their edible parts should have Cd concentrations below maximum permissible concentrations for safe consumption, even when grown in Cd-contaminated soil. Several low-Cd cereal cultivars and genotypes have been developed worldwide through cultivar screening and conventional breeding. Molecular markers are powerful in facilitating the selection of low-Cd cereal cultivars. Modern molecular breeding technologies may have great potential in breeding programs for the development of low-Cd cultivars, especially when coupled with conventional breeding. In this review, we provide a synthesis of low-Cd cereal breeding.

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Identification of QTLs associated with cadmium concentration in rice grains

Cited by 17 publications

References 38 publications

Advances in molecular mechanisms underlying cadmium uptake and translocation in rice

Advances in molecular mechanisms underlying cadmium uptake and translocation in rice

Reducing Cadmium Accumulation in Plants: Structure–Function Relations and Tissue-Specific Operation of Transporters in the Spotlight

Breeding for low cadmium accumulation cereals

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