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Cultivar Diversity And Organ Differences Of Cadmium Accumulation In Potato (Solanum Tuberosum L.) Allow The Potential For Cd-Safe Staple Food Production On Contaminated Soils

文献类型： 外文期刊

作者： Ye, YX; Dong, W; Luo, Y; Fan, T; Xiong, XY; Sun, L; Hu, XX

作者机构：

关键词： Potato (Solanum Tuberosum L.); Cd Distribution; Cd-Safe Tubers; Phytoremediation

期刊名称： SCIENCE OF THE TOTAL ENVIRONMENT

ISSN： 0048-9697

年卷期： 2020 年 711 卷

页码：

收录情况： JCR（2021版） ; EI（2021版）

摘要： Cadmium (Cd) is a toxic element that can accumulate in plants and poses a threat to human health through biomagnification. There are differences in Cd levels among different plants tissues. Hence, an optimal crop that possesses low Cd levels in the edible parts but high levels in the inedible parts is urgently needed to simultaneously lower soil-Cd levels in contaminated fields and to produce Cd-safe crops. In this study, we investigated the Cd levels in tubers and other tissues of potato (Solanum tuberosum L.) using different experimental approaches, and identified variations in Cd accumulation in different potato cultivars and characterized the Cd-distribution pattern in potato. Our results showed that Cd accumulation in tubers of the tested cultivars varied greatly, and that tuber-Cd levels were much lower than in the stems or leaves. Two-way ANOVA revealed that the tuber-Cd levels in potato are determined by both genotypic differences and the soil-Cd levels of the farmlands. Among the cultivars tested, one cultivar, 'Eshu10', was found to have the lowest tuber-Cd levels but had much higher Cd levels in leaf and stem tissues. Our study shows that the Cd-distribution pattern within potato plants makes it an ideal candidate for the safe production of a staple food that also has the potential to contribute to the remediation of contaminated soils. (C) 2019 Elsevier B.V. All rights reserved.

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