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<p>The elemental concentrations/profile in plants is mainly influenced by various factors including genotype, species, and the environment. The extent of toxic elements and the soil and rice plant mineral composition in the rice growing region of Haryana, India is not known. To discern rice genotypes for nutritional and toxic element profiles, we gathered 58 indica rice genotypes cultivated across soils with pH levels ranging from 6.29 to 7.92. Sampling from 11 diverse sites in Haryana during the kharif seasons of 2020–2021 and 2021–2022, we analysed the concentration of 29 elements using Inductively Coupled Plasma Mass Spectrometry. Our investigation unveiled substantial disparities in elemental concentrations among genotypes from distinct locations, underscoring the influence of genetic, physiological, and environmental factors on ionomic variations. Notably, total Arsenic (As) and Cadmium (Cd) concentrations in grains spanned from 0.017 to 1.17&#xa0;mg kg<sup>-1</sup> and 0.03 to 0.66&#xa0;mg kg<sup>-1</sup>dry weight, respectively. Alarmingly, several genotypes surpassed the Codex international standard’s proposed limit of inorganic As at 0.20&#xa0;mg kg<sup>-1</sup>. Correlation analysis revealed significant disparities among elements across samples, illuminating diverse degrees of positive and negative interactions. Principal component analysis further indicated that ionomic alterations across genotypes predominantly stemmed from variations in soil-to-plant transport pathways. The study underscores that even within plants of identical genotypes, shifts in soil conditions trigger ionomic variations. Moreover, the associations primarily revolve around genotype screening for multi-element accumulation effects, offering insights for breeders to develop biofortified rice varieties with safe levels of hazardous elements like As and Cd.</p> Graphical Abstract <p></p>

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Genotype and Environmental Influences on Elemental Profiles and Toxic Element Accumulation in Indica Rice (Oryza sativa L.)

  • 期刊论文

  • 发表日期：

    2025年2月3日

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  • Yogita Singh,
  • Om Parkash Dhankher,
  • Upendra Kumar

摘要

The elemental concentrations/profile in plants is mainly influenced by various factors including genotype, species, and the environment. The extent of toxic elements and the soil and rice plant mineral composition in the rice growing region of Haryana, India is not known. To discern rice genotypes for nutritional and toxic element profiles, we gathered 58 indica rice genotypes cultivated across soils with pH levels ranging from 6.29 to 7.92. Sampling from 11 diverse sites in Haryana during the kharif seasons of 2020–2021 and 2021–2022, we analysed the concentration of 29 elements using Inductively Coupled Plasma Mass Spectrometry. Our investigation unveiled substantial disparities in elemental concentrations among genotypes from distinct locations, underscoring the influence of genetic, physiological, and environmental factors on ionomic variations. Notably, total Arsenic (As) and Cadmium (Cd) concentrations in grains spanned from 0.017 to 1.17 mg kg-1 and 0.03 to 0.66 mg kg-1dry weight, respectively. Alarmingly, several genotypes surpassed the Codex international standard’s proposed limit of inorganic As at 0.20 mg kg-1. Correlation analysis revealed significant disparities among elements across samples, illuminating diverse degrees of positive and negative interactions. Principal component analysis further indicated that ionomic alterations across genotypes predominantly stemmed from variations in soil-to-plant transport pathways. The study underscores that even within plants of identical genotypes, shifts in soil conditions trigger ionomic variations. Moreover, the associations primarily revolve around genotype screening for multi-element accumulation effects, offering insights for breeders to develop biofortified rice varieties with safe levels of hazardous elements like As and Cd.

Graphical Abstract