title: Spatial distribution and toxicity of cadmium in the joint presence of sulfur in rice seedling.
abstract: The spatial distribution and toxic effects of cadmium (Cd) in the joint presence of sulfur (S) in rice seedling remain almost unknown. Therefore, the indoor experiments test runs were performed to determine the accumulation and toxicity of Cd in presence of S for the first time. The results showed that S supply significantly reduced the Cd accumulation and toxicity due to the decrease of Cd availability. XRF observation results illustrated that in the single Cd treatments, Cd mainly distributed in the bottom of root, while equably existed in the shoot. Additionally, S addition could facilitate Cd transfer to the top of shoot and finally form the similar distribution trend for S and Cd, suggesting that S might increase the synthesis of thiol pool (such as PCs, GSH and NPT) and then chelate Cd, which further affected Cd translocation. Such observations have provided the useful information of potential ecotoxicological effects of Cd contamination in the environment.
authors.affiliation: School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China; State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, Shanghai 200237, China.
authors.forename: Wen
authors.initials: W
authors.lastname: Zhang
authors.forename: Kuangfei
authors.initials: K
authors.lastname: Lin
authors.forename: Jian
authors.initials: J
authors.lastname: Zhou
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.forename: Lili
authors.initials: L
authors.lastname: Liu
authors.forename: Xiaolin
authors.initials: X
authors.lastname: Han
mesh_terms: D018533:Biomass; D019256:Cadmium Chloride / Q000493:pharmacokinetics* / Q000633:toxicity*; D005978:Glutathione / Q000378:metabolism; D012275:Oryza / Q000502:physiology*; D054811:Phytochelatins / Q000378:metabolism; D018520:Plant Shoots / Q000378:metabolism; D036226:Seedlings / Q000378:metabolism; D013052:Spectrometry, X-Ray Emission; D013438:Sulfhydryl Compounds / Q000378:metabolism; D013455:Sulfur / Q000633:toxicity*; D014876:Water Pollution
chemical_list: D013438:Sulfhydryl Compounds; D013455:Sulfur; D054811:Phytochelatins; D005978:Glutathione; D019256:Cadmium Chloride
keywords: Cadmium; Spatial distribution; Sulfur; Thiol pool; XRF