Research institute of vegetables, Hunan academy of agricultural sciences, Changsha 410125, China.
College of Science, Hunan Agricultural University, Changsha 410128, China.
Ecotoxicol Environ Saf. 2019 Apr 30;171:511-517. doi: 10.1016/j.ecoenv.2019.01.022. Epub 2019 Jan 11.
Heavy metal (HM) contamination in soil result in second pollution damage to Chinese cabbage, leading to deleterious health impacts. To elucidate the common transfer and accumulation characteristics of HMs in Chinese cabbage cultivar is important for safety breeding and consumption. In this case, concentrations and transfer capacities of HMs (Cd, Cr, Hg, Pb and As) in 35 common Chinese cabbage genotypes and their genotypic difference were investigated in this work. Results indicate that Chinese cabbage cultivar was more susceptible to Cd pollution, Hg was easily sifted from underground part to aerial part, Cr and Pb have similar enrichment and translocation characteristics, and Chinese cabbage cultivar had tolerance to As toxicity to some extent. Moreover, genotypic difference in HM accumulation in different parts of Chinese cabbage cultivar was also observed, and for edible part, followed by Hg>As>Cd>Pb>Cr. Referring to overall HM pollution level and biomass yield of edible part of 35 tested Chinese cabbages, B18, B6, B2 and B3 could be considered as the potential HMs pollution-safe Chinese cabbage cultivars. Information founded in this work may be used to provide referential strategies and methods to minimize the influx of HMs pollutants to human being through consumption and cultivation of Chinese cabbages.
土壤中的重金属(HM)污染会对白菜造成二次污染损害,从而对健康产生有害影响。阐明白菜品种中重金属的常见迁移和积累特性对于安全育种和消费非常重要。在这种情况下,本工作研究了 35 个常见白菜品种中重金属(Cd、Cr、Hg、Pb 和 As)的浓度和迁移能力及其基因型差异。结果表明,白菜品种对 Cd 污染更敏感,Hg 容易从地下部分筛分到地上部分,Cr 和 Pb 具有相似的富集和迁移特性,白菜品种对 As 的毒性有一定的耐受性。此外,还观察到白菜品种不同部位重金属积累的基因型差异,对于可食用部分,Hg>As>Cd>Pb>Cr。参考 35 种测试白菜的整体重金属污染水平和可食用部分的生物量产量,B18、B6、B2 和 B3 可以被认为是潜在的 HM 污染安全白菜品种。本工作中获得的信息可用于提供参考策略和方法,通过食用和种植白菜来最大程度地减少重金属污染物对人类的流入。