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Interaction between sulfur and lead in toxicity, iron plaque formation and lead accumulation in rice plant
Yang J. X.; Liu, Z. Y.; Wan, X. M.; Zheng, G. D.; Yang, J.; Zhang, H. Z.; Guo, L.; Wang, X. D.; Zhou, X. Y.; Guo, Q. J.; Xu, R. X.; Zhou, G. D.; Peters, M.; Zhu, G. X.; Wei, R. F.; Tian, L. Y.; Han, X. K.
Source PublicationEcotoxicology and Environmental Safety
2016
Volume128
Pages206-212
KeywordGlutathione Iron plaque Lead Rice (Oryza saliva L.) Sulfur radial oxygen loss reduces arsenic accumulation oryza-sativa l. wetland plants typha-latifolia zinc uptake roots pb tolerance soils
AbstractHuman activities have resulted in lead and sulfur accumulation in paddy soils in parts of southern China. A combined soil sand pot experiment was conducted to investigate the influence of S supply on iron plaque formation and Pb accumulation in rice (Oryza saliva L.) under two Pb levels (0 and 600 mg kg(-1)), combined with four S concentrations (0, 30, 60, and 120 mg kg(-1)). Results showed that S supply significantly decreased Pb accumulation in straw and grains of rice. This result may be attributed to the enhancement of Fe plaque formation, decrease of Pb availability in soil, and increase of reduced glutathione (GSH) in rice leaves. Moderate S supply (30 mg kg(-1)) significantly increased Fe plaque formation on the root surface and in the rhizosphere, whereas excessive S supply (60 and 120 mg kg(-1)) significantly decreased the amounts of iron plaque on the root surface. Sulfur supply significantly enhanced the GSH contents in leaves of rice plants under Pb treatment. With excessive S application, the rice root acted as a more effective barrier to Pb accumulation compared with iron plaque. Excessive S supply may result in a higher monosulfide toxicity and decreased iron plaque formation on the root surface during flooded conditions. However, excessive S supply could effectively decrease Pb availability in soils and reduce Pb accumulation in rice plants. (C) 2016 Elsevier Inc. All rights reserved.
Indexed BySCI
Language英语
ISSN0147-6513
DOI10.1016/j.ecoenv.2016.02.021
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document TypeSCI/SSCI论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/43354
Collection历年回溯文献
Recommended Citation
GB/T 7714
Yang J. X.,Liu, Z. Y.,Wan, X. M.,et al. Interaction between sulfur and lead in toxicity, iron plaque formation and lead accumulation in rice plant. 2016.
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