Characterization of grain cadmium concentration in indica hybrid rice

Abstract

As a consequence of contamination of soil with heavy metals, cadmium accumulation in grain is of great concern worldwide, but especially in southern China. It is important to evaluate the Cd accumulation potential of grain before or when examining and approving new cultivars. An evaluation method and criteria for verifying Cd accumulation potential in rice are proposed, and the Cd accumulation potential of 56 mid-season indica hybrids collected from the provincial cultivar trials in 2016 were investigated. Genotype, environment and their interactions strongly affected the variation in grain Cd accumulation. Two hybrids were identified as slightly Cd accumulating. Hybrids with slight Cd accumulation potential would be suitable for safe grain production on polluted land (total Cd under 2.0 mg·kg⁻¹) in Hunan Province (China) and should be considered for new cultivar evaluation and approval. This evaluation method and criterion could be applied for certifying Cd accumulation potential of rice cultivars.

Keywords

accumulation / cadmium / hybrid / methodology / rice

References

[1] Sebastian A, Prasad M N V. Cadmium minimization in rice. A review. Agronomy for Sustainable Development, 2014, 34(1): 155–173

[2] World Health Organization. Health risks of heavy metals from long range trans-boundary air pollution. Copenhagen. World Health Organization Regional Office for Europe, 2007, 40–45

[3] Clemens S, Aarts M G, Thomine S, Verbruggen N. Plant science: the key to preventing slow cadmium poisoning. Trends in Plant Science, 2013, 18(2): 92–99

[4] World Health Organization. Exposure to cadmium: a major public health concern. Preventing Disease Through Healthy Environments, 2010, 3–6

[5] Ministry of Environmental Protection. The Ministry of Land and Resources Report on the national soil contamination survey. 2014

[6] Ministry of Agriculture. A pilot plan to carry out arable rotation and fallow. 2016

[7] Uraguchi S, Fujiwara T. Cadmium transport and tolerance in rice: perspectives for reducing grain cadmium accumulation. Rice, 2012, 5(1): 5

[8] Arao T, Ae N. Genotypic variations in cadmium levels of rice grain. Soil Science and Plant Nutrition, 2003, 49(4): 473–479

[9] Jiang S, Shi C, Wu J. Genotypic differences in arsenic, mercury, lead and cadmium in milled rice (Oryza sativa L.). International Journal of Food Sciences and Nutrition, 2012, 63(4): 468–475

[10] Sun L, Xu X, Jiang Y, Zhu Q, Yang F, Zhou J, Yang Y, Huang Z, Li A, Chen L, Tang W, Zhang G, Wang J, Xiao G, Huang D, Chen C. Genetic diversity, rather than cultivar type, determines relative grain Cd accumulation in hybrid rice. Frontiers of Plant Science, 2016, 7: 1407

[11] Duan G, Shao G, Tang Z, Chen H, Wang B, Tang Z, Yang Y, Liu Y, Zhao F J. Genotypic and environmental variations in grain cadmium and arsenic concentrations among a panel of high yielding rice cultivars. Rice, 2017, 10(1): 9

[12] Yu H, Wang J, Fang W, Yuan J, Yang Z. Cadmium accumulation in different rice cultivars and screening for pollution-safe cultivars of rice. Science of the Total Environment, 2006, 370(2–3): 302–309

[13] Ishikawa S, Ae N, Yano M. Chromosomal regions with quantitative trait loci controlling cadmium concentration in brown rice (Oryza sativa). New Phytologist, 2005, 168(2): 345–350

[14] Abe T, Nonoue Y, Ono N, Omoteno M, Kuramata M, Fukuoka S, Yamamoto T, Yano M, Ishikawa S. Detection of QTLs to reduce cadmium content in rice grains using LAC23/Koshihikari chromosome segment substitution lines. Breeding Science, 2013, 63(3): 284–291

[15] Arao T, Kawasaki A, Baba K, Mori S, Matsumoto S. Effects of water management on cadmium and arsenic accumulation and dimethylarsinic acid concentrations in Japanese rice. Environmental Science & Technology, 2009, 43(24): 9361–9367

[16] Hu P, Huang J, Ouyang Y, Wu L, Song J, Wang S, Li Z, Han C, Zhou L, Huang Y, Luo Y, Christie P. Water management affects arsenic and cadmium accumulation in different rice cultivars. Environmental Geochemistry and Health, 2013, 35(6): 767–778

Supplementary materials

The online version of this article at https://doi.org/10.15302/J-FASE-2019281 contains supplementary material (Table S1).

Acknowledgements

This research was supported by grants from the National Key Technology Research and Development Program of China (2016YFD0101801), the Rice Cadmium Accumulation Characteristics Identification Project of the Seed Management Service Station of Hunan, Special Project of National Independent Innovation Demonstration Zone (2018XK2005) and Science and Technology Innovation Program (2018NK1020).

Compliance with ethics guidelines

Kai Wang, Qunfeng Zhou, Tianze Yan, Shilong Xu, Longyi Zhao, Weicheng Wang, Zhigang Jin, Peng Qin, Chenjian Fu, Liangbi Chen, and Yuanzhu Yang declare that they have no conflicts of interest or financial conflicts to disclose.

This article does not contain any studies with human or animal subjects performed by any of the authors.

RIGHTS & PERMISSIONS

The Author(s) 2019. Published by Higher Education Press. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0)