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首页> 美国卫生研究院文献>International Journal of Environmental Research and Public Health >Genotypic Variation in Nickel Accumulation and Translocation and Its Relationships with Silicon Phosphorus Iron and Manganese among 72 Major Rice Cultivars from Jiangsu Province China
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Genotypic Variation in Nickel Accumulation and Translocation and Its Relationships with Silicon Phosphorus Iron and Manganese among 72 Major Rice Cultivars from Jiangsu Province China

机译：中国江苏省72个主要水稻品种镍积累和转运的基因型变异及其与硅磷铁和锰的关系

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Nickel (Ni) is a ubiquitous environmental toxicant and carcinogen, and rice is a major dietary source of Ni for the Chinese population. Recently, strategies to decrease Ni accumulation in rice have received considerable attention. This study investigated the variation in Ni accumulation and translocation, and also multi-element (silicon (Si), phosphorus (P), iron (Fe), and manganese (Mn)) uptake and transport among 72 rice cultivars from Jiangsu Province, China, that were grown under hydroponic conditions. Our results showed a 2.2-, 4.2-, and 5.3-fold variation in shoot Ni concentrations, root Ni concentrations, and translocation factors (TFs) among cultivars, respectively. This suggests that Ni accumulation and translocation are significantly influenced by the genotypes of the different rice cultivars. Redundancy analysis of the 72 cultivars revealed that the uptake and transport of Ni were more similar to those of Si and Fe than to those of P and Mn. The Ni TFs of high-Ni cultivars were significantly greater than those of low-Ni cultivars (p < 0.001). However, there were no significant differences in root Ni concentrations of low-Ni and high-Ni cultivars, suggesting that high-Ni cultivars could translocate Ni to shoots more effectively than low-Ni cultivars. In addition, the cultivars HD8 and YD8 exhibited significantly lower levels of Ni accumulation than their parents (p < 0.05). Our results suggest that breeding can be an effective strategy for mitigating excessive Ni accumulation in rice grown in Ni-contaminated environments.
机译：镍（Ni）是一种普遍存在的环境毒物和致癌物，大米是中国人镍的主要饮食来源。近来，减少稻米中镍积累的策略已引起广泛关注。本研究调查了江苏省72个水稻品种中Ni积累和转运的变化以及多种元素（硅（Si），磷（P），铁（Fe）和锰（Mn））的吸收和转运。 ，是在水培条件下生长的。我们的研究结果表明，不同品种之间的地上部镍浓度，根系镍浓度和转运因子（TFs）分别变化了2.2倍，4.2倍和5.3倍。这表明镍的积累和转运受到不同水稻品种的基因型的显着影响。对72个品种的冗余分析表明，Ni的吸收和转运与Si和Fe的吸收和转运相比，与P和Mn的吸收和转运更为相似。高Ni品种的Ni TFs明显高于低Ni品种（p <0.001）。然而，低Ni和高Ni品种的根Ni浓度没有显着差异，这表明高Ni品种比低Ni品种能够更有效地将Ni转移到芽上。另外，HD8和YD8品种的镍积累水平明显低于其亲本（p <0.05）。我们的结果表明，育种可能是减轻在受Ni污染的环境中种植的水稻中过量Ni积累的有效策略。

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