Heavy metal content and microbial characteristics of soil plant system in Dabaoshan mining area, Guangdong Province

Qin, Jianqiao; Jiang, Xueding; Yan, Zhiqiang; Zhao, Huarong; Zhao, Peng; Yao, Yufei; Chen, Xi

doi:10.1371/journal.pone.0285425

Cited by 3 publications

(1 citation statement)

References 43 publications

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“…Combined with previous research results, the unprocessed metallurgical wastewater of Dabaoshan multimetal mine in northern Guangdong Province was directly discharged into Hengshi River, causing serious harm to the environment along the the Hengshi River Basin [52]. The acid and polluted wastewater discharged by Dexing Copper Mine in Jiangxi Province contaminated the Le'an River and caused harm to animals, plants, and farmland along the riverbanks [53]. The results of previous research have shown that acidic wastewater generated by mining activities and its illegal discharge are another important cause of Cd pollution in the Wenyu Stream [54].…”

Section: Acid Mine Drainage Source Of Cadmium In the Wenyu Streammentioning

confidence: 67%

The Impact of Molybdenum Mining on Cd Pollution along Wenyu Stream in Qinling Mountains, Northwest China

Chen,

Zhao,

et al. 2023

Water

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Mining has brought many environmental problems to the surrounding soil, water, and air, with toxic elements contaminating surface water, threatening ecological balance and human health. This study selected the Wenyu watershed downstream from a large molybdenum mine in the Qinling Mountains as the study area, aiming to explore the impact of molybdenum mining on surface water quality. The content characteristics of Cd, Pb, Cu, Cr and Hg in surface water, sediment, and rock samples were analyzed by field sampling and chemical testing. The results showed only obvious Cd pollution. The pollution status and ecological risk level of surface water and sediment samples in the Wenyu Stream watershed were evaluated using the single pollution index method, geo-accumulation index method, and Hakanson potential ecological risk assessment method. Finally, the sources of Cd pollution and the impact of mining on Cd distribution in the Wenyu Stream were comprehensively discussed. The research results showed that Cd content in the Wenyu Stream was significantly affected by mining activity and the coefficient of variation of Cd content reached 99.44%. Among 22 surface water samples, 21 samples met the Class II water standard, indicating a clean overall water quality of the Wenyu Stream, and only one sample exceeded the Class II water standard with a mild pollution level. All 15 sediment samples were polluted to varying degrees and the most severely polluted sample had reached a moderate to strong pollution level. Most of the samples were at a moderate pollution level. The potential ecological hazard indexes of Cd content were at medium to very strong risk level, indicating that the overall sediment in the main ditch of the Wenyu Stream was under a strong ecological risk level. The main sources of Cd pollution, including acid mine drainage, regional geological background, sediment release, and atmospheric dry and wet deposition, were discussed.

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Section: Acid Mine Drainage Source Of Cadmium In the Wenyu Streammentioning

confidence: 67%

The Impact of Molybdenum Mining on Cd Pollution along Wenyu Stream in Qinling Mountains, Northwest China

Chen,

Zhao,

et al. 2023

Water

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Unlocking the secrets of soil microbes: How decades-long contamination and heavy metals accumulation from sewage water and industrial effluents shape soil biological health

Haider,

Ali,

Sanaullah

et al. 2023

Chemosphere

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Flavonoid metabolism plays an important role in response to lead stress in maize at seedling stage

Han,

Zheng,

Zhang

et al. 2024

BMC Plant Biol

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Background Pb stress, a toxic abiotic stress, critically affects maize production and food security. Although some progress has been made in understanding the damage caused by Pb stress and plant response strategies, the regulatory mechanisms and resistance genes involved in the response to lead stress in crops are largely unknown. Results In this study, to uncover the response mechanism of maize to Pb stress phenotype, physiological and biochemical indexes, the transcriptome, and the metabolome under different concentrations of Pb stress were combined for comprehensive analysis. As a result, the development of seedlings and antioxidant system were significantly inhibited under Pb stress, especially under relatively high Pb concentrations. Transcriptome analysis revealed 3559 co-differentially expressed genes(co-DEG) under the four Pb concentration treatments (500 mg/L, 1000 mg/L, 2000 mg/L, and 3000 mg/L Pb(NO3) 2 ), which were enriched mainly in the GO terms related to DNA-binding transcription factor activity, response to stress, response to reactive oxygen species, cell death, the plasma membrane and root epidermal cell differentiation. Metabolome analysis revealed 72 and 107 differentially expressed metabolites (DEMs) under T500 and T2000, respectively, and 36 co-DEMs. KEGG analysis of the DEMs and DEGs revealed a common metabolic pathway, namely, flavonoid biosynthesis. An association study between the flavonoid biosynthesis-related DEMs and DEGs revealed 20 genes associated with flavonoid-related metabolites, including 3 for genistin and 17 for calycosin. Conclusion In summary, the study reveals that flavonoid metabolism plays an important role in response to Pb stress in maize, which not only provides genetic resources for the genetic improvement of maize Pb tolerance in the future but also enriches the theoretical basis of the maize Pb stress response. Supplementary Information The online version contains supplementary material available at 10.1186/s12870-024-05455-0.

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Heavy metal content and microbial characteristics of soil plant system in Dabaoshan mining area, Guangdong Province

Cited by 3 publications

References 43 publications

The Impact of Molybdenum Mining on Cd Pollution along Wenyu Stream in Qinling Mountains, Northwest China

The Impact of Molybdenum Mining on Cd Pollution along Wenyu Stream in Qinling Mountains, Northwest China

Unlocking the secrets of soil microbes: How decades-long contamination and heavy metals accumulation from sewage water and industrial effluents shape soil biological health

Flavonoid metabolism plays an important role in response to lead stress in maize at seedling stage

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