Differences in absorption of cadmium and lead among fourteen sweet potato cultivars and health risk assessment

Huang, Fang; Zhou, Hong; Gu, Jiacun; Liu, Canyang; Yang, Wenjun; Liao, Bo-Han; Zhou, Hang

doi:10.1016/j.ecoenv.2020.111012

Cited by 35 publications

(13 citation statements)

References 56 publications

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“…Latiusculum, Miscanthus floridulus, and Erigeron annuus. Maize (Guo et al, 2011;Wang et al, 2016) and sweet potato (Huang et al, 2020) are cropped in low-pollution farmland as their low accumulation of heavy metals. Planting maize and sweet potato instead of rice in low-pollution areas of heavy metals are one of the measures to protect human health and the agricultural economy (Wang et al, 2016;Huang et al, 2020).…”

Section: Experimental Site and Samplingmentioning

confidence: 99%

“…Previous studies have shown that farmland planting can destroy the size of soil aggregates and increase soil porosity, thus changing the stability of soil structure (Deng et al, 2015). Farmland planting can also affect the activity, biomass and diversity of soil microbe, and change the content, valence and stability of heavy metals in soil (Deng et al, 2015;Huang et al, 2020). These changes can reduce or increase the degree of pollution by heavy metals in soil, thereby affecting microbial and biochemical processes in farm ecosystems (Raiesi, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Diversity and composition of soil bacteria between abandoned and selective-farming farmlands in an antimony mining area

Duan

Chen

et al. 2022

Front. Microbiol.

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Background and aimsLand abandonment and selective farming are two common management methods to restore the soil conditions of low-pollution farmland in mining areas. The soil bacterial community plays an important role in farmland soil restoration; however, few studies have compared the composition and diversity of soil bacteria between the abandoned farmlands (AFS) and selective-farming farmlands (FFS). Here, the effects of AFS and FFS on soil properties and bacterial diversity were evaluated in an antimony (Sb) mining area in southern China. This study aimed to identify effective land management methods in terms of positive or negative changes in soil environment and bacterial diversity.Methods16S rRNA high-throughput sequencing was used to compare the diversity and composition of soil bacteria between AFS and FFS in the Xikuangshan (the largest Sb mine in the world).ResultsCompared to AFS, FFS had higher Sb concentration and nutritional properties (e.g., available N, P, and K) and lower Zn concentration (p < 0.05). The bacterial alpha diversity including Chao1 index, Simpson index, Shannon index and Pielou−e index in FFS was higher than AFS (p < 0.05). At the phylum level, FFS had higher relative abundances of Chloroflexi, Acidobacteria, Gemmatimonadetes, and Rokubacteria, and lower relative abundances of Firmicutes, Actinobacteria, and Bacteroidetes. At the genus level, FFS had higher relative abundances of Acidothermus, Haliangium, and Rokubacteriales, and lower relative abundances of Bacillus, Rhodococcus, Sphingomonas, and 67-14. Redundancy analysis indicated that soil heavy metal content and soil fertility were closely correlated with the soil bacterial community. Altogether, selective farming of low-pollution farmland in the mining area can improve soil properties and soil bacterial diversity.

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Section: Experimental Site and Samplingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Diversity and composition of soil bacteria between abandoned and selective-farming farmlands in an antimony mining area

Duan

Chen

et al. 2022

Front. Microbiol.

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“…In addition, Cd is one of the most seriously polluted HMs in soil of China, and nearly 33.54% and 44.65% of sites in farmland and urban soils were polluted with Cd ( Yuan et al., 2021 ). Indeed, some edible-types sweet potato cultivars can accumulate more Cd and lead (Pb) than starch-type cultivars in flesh ( Huang et al., 2020a ). For instance, sweet potato with larger underground biomass shows high accumulation of Uranium (1.68-5.16 mg kg −1 ) and Cd (0.78-2.02 mg kg −1 ), and would pose a health risk if consumed ( Lai et al., 2020 ).…”

Section: Introductionmentioning

confidence: 99%

The original polyethylene microplastics inhibit the growth of sweet potatoes and increase the safety risk of cadmium

Shi

Chen²,

Hou³

et al. 2023

Front. Plant Sci.

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Microplastics (MPs) and heavy metals (HMs) co-exist in sweet potato fields of China. As the main component of agricultural field mulch and one of the most polluting and harmful HMs, the effects of polyethylene microplastics (PE MPs) and cadmium (Cd) on sweet potato and soil environment are remains unclear. Here, pot and hydroponic experiments are used to explore the effects of original and weathered PE MPs on growth and Cd uptake of sweet potatoes. The results of pot experiments reveal that compared with the control (0%), 5% of weathered PE MPs can significantly increase soil electrical conductivity (EC); both 5% of the original PE MPs and weathered PE MPs can significantly reduce the concentration of Olsen phosphorus (P) and Olsen potassium (K) in soil, inhibit plant growth, but significantly increase Cd accumulation and glutathione (GSH) level in tissues of sweet potatoes, and also induce membrane lipid peroxidation. In addition, compared to 5% weathered PE MPs, 5% original PE MPs significantly reduce soil EC, growth and peroxidase level of sweet potatoes, but significantly increase Cd concentration in leaves and stems. The results of hydroponic experiment show that original PE MPs significantly increase the P, K, and Cd adsorption compared with weathered PE MPs, and Cd increases the original PE MPs accumulation in the root cortex but decrease PE MPs accumulation in shoots. To sum up, our study investigates the differences and reasons of the effects of original and weathered PE MPs on growth and Cd absorption of sweet potatoes.

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“…Multiple pieces of research have demonstrated that Cd distribution in plants varies significantly between species and within a species, depending on the population or cultivar. ( Florijn and Van Beusichem, 1993 ; Greger and Löfstedt, 2004 ; Laporte et al., 2015 ; Lewis et al., 2018 ; Huang et al., 2020 ; Zhang et al., 2022 ; Chi et al., 2022 ). In addition, several studies have explored the biological mechanisms of Cd accumulation in plants, emphasizing identifying the genes and proteins involved in Cd absorption, transport, storage, and detoxification in plant tissues.…”

Section: Introductionmentioning

confidence: 99%

De Novo transcriptome combined with physiological analyses revealed key genes for cadmium accumulation in Zhe-Maidong (Ophiopogon japonicus)

Zhao

Lin

et al. 2022

Front. Plant Sci.

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IntroductionCadmium (Cd) is a toxic heavy metal that severely threatens safe food production. Zhe-Maidong, a well-known Chinese traditional herbal medicine, is susceptible to Cd stress. However, the characteristics of Cd transformation and migration, as well as the regulatory system for genes conferring Cd accumulation of Zhe-Maidong, remains an essential issue to be addressed.MethodsZhe-Maidong seedling growth in Cd-contaminated and uncontaminated soil was conducted for 90 days. The Cd concentration was determined by inductively coupled plasma-mass spectrometry, and the Cd2+ fluorescence probe detected Cd distributions. The root transcriptome of Zhe-Maidong was then evaluated using various Cd stress hydroponic treatments designated Cd-0, Cd-M, and Cd-H.Results and discussionThe enrichment factor (EF) value in the root was four times that of the leaves, indicating that the root has a high ability to absorb and accumulate Cd. The Cd2+ were mainly distributed in the root hair and the epidermis in both roots and leaves, revealing that the epidermal cells of roots may collect Cd2+ and also have an outstanding role in Cd2+ uptake. A total of 50 DEGs involved in Cd translocation and accumulation were identified. Among these DEGs, ANN, ABCC2/4, HMA1- 5, and CCX gene expression were positively correlated with EF-root, EF-leaf, EF-total, Cd-leaf, Cd-root, and Cd-plant, indicating their role in Cd transport and accumulation under Cd-stress. These data could be helpful in uncovering the Cd accumulation characteristics in Zhe-Maidong, as well as provide a bioinformatic foundation for investigations on finding gene functions and the screening of candidate genes related to Cd accumulation.

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Differences in absorption of cadmium and lead among fourteen sweet potato cultivars and health risk assessment

Cited by 35 publications

References 56 publications

Diversity and composition of soil bacteria between abandoned and selective-farming farmlands in an antimony mining area

Diversity and composition of soil bacteria between abandoned and selective-farming farmlands in an antimony mining area

The original polyethylene microplastics inhibit the growth of sweet potatoes and increase the safety risk of cadmium

De Novo transcriptome combined with physiological analyses revealed key genes for cadmium accumulation in Zhe-Maidong (Ophiopogon japonicus)

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