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Effects of zinc and cadmium interactions on root morphology and metal translocation in a hyperaccumulating species under hydroponic conditions.
J Hazard Mater. 2009 Sep 30; 169(1-3):734-41.JH

Abstract

Effects of zinc (Zn) and cadmium (Cd) interactions on root morphology and metal translocation in the hyperaccumulating ecotype (HE) and non-hyperaccumulating ecotype (NHE) of S. alfredii were investigated under hydroponic conditions. Specific root lengths (SRL), specific root surface areas (SRA) and specific root volumes (SRV) of the HE increased significantly when plant were treated with 500 microM Zn or 100 microM Cd+500 microM Zn, whereas these root parameters were significantly decreased for the NHE when plant were treated with 100 microM Cd, 500 microM Zn or 100 microM Cd+500 microM Zn. SRL and SRA of the HE were mainly constituted by roots with diameter between 0.2-0.4mm (diameter class 3 and 4) which were significantly increased in treatment of 500 microM Zn or 100 microM Cd+500 microM Zn, whereas in the NHE, metal treatments caused a significant decrease in SRL and SRA of the finest diameter class root (diameter between 0.1-0.3mm). The HE of S. alfredii could maintain a fine, widely branched root system under contaminated conditions compared with the NHE. Relative root growth, net Cd uptake and translocation rate in the HE were significantly increased by adding 500 microM Zn, as compared with the second growth period, where 100 microM Cd was supplied alone. Cadmium and Zn concentrations in the shoots of the HE were 12-16 times and 22-27 times higher than those of the NHE under 100 microM Cd+500 microM Zn combined treatment. These results indicate strong positive interactions of Zn and Cd occurred in the HE under 100 microM Cd+500 microM Zn treatment and Cd uptake and translocation was enhanced by adding 500 microM Zn.

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Authors+Show Affiliations

Li T
Ministry of Education Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310029, China. litq@zju.edu.cn
Yang X
No affiliation info available
Lu L
No affiliation info available
Islam E
No affiliation info available
He Z
No affiliation info available

MeSH

CadmiumHydroponicsPlant RootsSedumZinc

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19427116

Citation

Li, Tingqiang, et al. "Effects of Zinc and Cadmium Interactions On Root Morphology and Metal Translocation in a Hyperaccumulating Species Under Hydroponic Conditions." Journal of Hazardous Materials, vol. 169, no. 1-3, 2009, pp. 734-41.
Li T, Yang X, Lu L, et al. Effects of zinc and cadmium interactions on root morphology and metal translocation in a hyperaccumulating species under hydroponic conditions. J Hazard Mater. 2009;169(1-3):734-41.
Li, T., Yang, X., Lu, L., Islam, E., & He, Z. (2009). Effects of zinc and cadmium interactions on root morphology and metal translocation in a hyperaccumulating species under hydroponic conditions. Journal of Hazardous Materials, 169(1-3), 734-41. https://doi.org/10.1016/j.jhazmat.2009.04.004
Li T, et al. Effects of Zinc and Cadmium Interactions On Root Morphology and Metal Translocation in a Hyperaccumulating Species Under Hydroponic Conditions. J Hazard Mater. 2009 Sep 30;169(1-3):734-41. PubMed PMID: 19427116.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of zinc and cadmium interactions on root morphology and metal translocation in a hyperaccumulating species under hydroponic conditions. AU - Li,Tingqiang, AU - Yang,Xiaoe, AU - Lu,Lingli, AU - Islam,Ejazul, AU - He,Zhenli, Y1 - 2009/04/09/ PY - 2009/02/07/received PY - 2009/04/01/revised PY - 2009/04/01/accepted PY - 2009/5/12/entrez PY - 2009/5/12/pubmed PY - 2009/9/29/medline SP - 734 EP - 41 JF - Journal of hazardous materials JO - J Hazard Mater VL - 169 IS - 1-3 N2 - Effects of zinc (Zn) and cadmium (Cd) interactions on root morphology and metal translocation in the hyperaccumulating ecotype (HE) and non-hyperaccumulating ecotype (NHE) of S. alfredii were investigated under hydroponic conditions. Specific root lengths (SRL), specific root surface areas (SRA) and specific root volumes (SRV) of the HE increased significantly when plant were treated with 500 microM Zn or 100 microM Cd+500 microM Zn, whereas these root parameters were significantly decreased for the NHE when plant were treated with 100 microM Cd, 500 microM Zn or 100 microM Cd+500 microM Zn. SRL and SRA of the HE were mainly constituted by roots with diameter between 0.2-0.4mm (diameter class 3 and 4) which were significantly increased in treatment of 500 microM Zn or 100 microM Cd+500 microM Zn, whereas in the NHE, metal treatments caused a significant decrease in SRL and SRA of the finest diameter class root (diameter between 0.1-0.3mm). The HE of S. alfredii could maintain a fine, widely branched root system under contaminated conditions compared with the NHE. Relative root growth, net Cd uptake and translocation rate in the HE were significantly increased by adding 500 microM Zn, as compared with the second growth period, where 100 microM Cd was supplied alone. Cadmium and Zn concentrations in the shoots of the HE were 12-16 times and 22-27 times higher than those of the NHE under 100 microM Cd+500 microM Zn combined treatment. These results indicate strong positive interactions of Zn and Cd occurred in the HE under 100 microM Cd+500 microM Zn treatment and Cd uptake and translocation was enhanced by adding 500 microM Zn. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/19427116/Effects_of_zinc_and_cadmium_interactions_on_root_morphology_and_metal_translocation_in_a_hyperaccumulating_species_under_hydroponic_conditions_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(09)00561-5 DB - PRIME DP - Unbound Medicine ER -