TY - JOUR T1 - Interaction between sulfur and lead in toxicity, iron plaque formation and lead accumulation in rice plant. AU - Yang,Junxing, AU - Liu,Zhiyan, AU - Wan,Xiaoming, AU - Zheng,Guodi, AU - Yang,Jun, AU - Zhang,Hanzhi, AU - Guo,Lin, AU - Wang,Xuedong, AU - Zhou,Xiaoyong, AU - Guo,Qingjun, AU - Xu,Ruixiang, AU - Zhou,Guangdong, AU - Peters,Marc, AU - Zhu,Guangxu, AU - Wei,Rongfei, AU - Tian,Liyan, AU - Han,Xiaokun, Y1 - 2016/03/04/ PY - 2015/08/03/received PY - 2016/02/18/revised PY - 2016/02/19/accepted PY - 2016/3/7/entrez PY - 2016/3/8/pubmed PY - 2016/11/5/medline KW - Glutathione KW - Iron plaque KW - Lead KW - Rice (Oryza sativa L.) KW - Sulfur SP - 206 EP - 12 JF - Ecotoxicology and environmental safety JO - Ecotoxicol Environ Saf VL - 128 N2 - Human 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 sativa 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. SN - 1090-2414 UR - https://www.unboundmedicine.com/medline/citation/26946285/Interaction_between_sulfur_and_lead_in_toxicity_iron_plaque_formation_and_lead_accumulation_in_rice_plant_ DB - PRIME DP - Unbound Medicine ER -