Tags

Type your tag names separated by a space and hit enter

Interactive effects of single, binary and trinary trace metals (lead, zinc and copper) on the physiological responses of Kandelia obovata seedlings.
Environ Geochem Health. 2019 Feb; 41(1):135-148.EG

Abstract

Heavy metals are considered important environmental contaminants, and their mixture toxicity on plants has complex mutual interactions. The interactive effects of heavy metals on growth, photosynthetic parameters, lipid peroxidation and compatible osmolytes were studied in Kandelia obovata grown for 5 months in sediment treated with combinations of lead (Pb), zinc (Zn) and copper (Cu). The results showed no significant reduction of biomass under heavy metal stresses, except for decreased root biomass under higher Pb + Cu treatment, indicating high tolerance of K. obovata to heavy metal stress. Only the photosynthetic parameters, including net photosynthetic rate (Pn), stomatal conductance (Gs) and transpiration rate (Tr), decreased with increasing concentration of treatments (except for Pb + Cu and Pb + Zn + Cu). Trinary treatment (Pb + Zn + Cu) increased biomass and the photosynthetic parameters when compared to the external addition of binary metals. In the roots, biomass and soluble sugar content were lower under binary than trinary treatments, indicating that the combination of Zn and Cu exhibited improved effects of alleviating toxicity than each of them alone in Pb-containing combined treatments. In the leaves, Zn-containing combined treatments significantly decreased malondialdehyde (MDA), soluble sugar and proline content in low concentration, while Pb + Cu treatments significantly increased these parameters (P < 0.05). The correlation analysis showed that leaf MDA and proline content were negatively correlated with Zn concentration (P < 0.05). Zn could alleviate the effects of combined heavy metal stress, and Pb + Cu treatment showed synergistic effects in leaves. The positive correlations between MDA content and the osmotic parameters showed that osmotic stress and lipid membranes oxidation exist simultaneously under multiple heavy metal stresses. Therefore, biomass, Tr, leaf MDA, leaf proline content and soluble sugar content could indicate metal mixture toxicity to mangrove seedlings.

Links

Publisher Full Text (DOI)

Authors+Show Affiliations

Shen X
School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, Guangdong, China.
Li R
School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, Guangdong, China. liruili@pkusz.edu.cn.
Chai M
School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, Guangdong, China.
Cheng S
School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, Guangdong, China.
Niu Z
School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, Guangdong, China.
Qiu GY
School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, Guangdong, China.

MeSH

BiomassCopperEnvironmental PollutantsLeadMetals, HeavyPhotosynthesisPlant LeavesRhizophoraceaeSeedlingsStress, PhysiologicalZinc

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29987496

Citation

Shen, Xiaoxue, et al. "Interactive Effects of Single, Binary and Trinary Trace Metals (lead, Zinc and Copper) On the Physiological Responses of Kandelia Obovata Seedlings." Environmental Geochemistry and Health, vol. 41, no. 1, 2019, pp. 135-148.
Shen X, Li R, Chai M, et al. Interactive effects of single, binary and trinary trace metals (lead, zinc and copper) on the physiological responses of Kandelia obovata seedlings. Environ Geochem Health. 2019;41(1):135-148.
Shen, X., Li, R., Chai, M., Cheng, S., Niu, Z., & Qiu, G. Y. (2019). Interactive effects of single, binary and trinary trace metals (lead, zinc and copper) on the physiological responses of Kandelia obovata seedlings. Environmental Geochemistry and Health, 41(1), 135-148. https://doi.org/10.1007/s10653-018-0142-8
Shen X, et al. Interactive Effects of Single, Binary and Trinary Trace Metals (lead, Zinc and Copper) On the Physiological Responses of Kandelia Obovata Seedlings. Environ Geochem Health. 2019;41(1):135-148. PubMed PMID: 29987496.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Interactive effects of single, binary and trinary trace metals (lead, zinc and copper) on the physiological responses of Kandelia obovata seedlings. AU - Shen,Xiaoxue, AU - Li,Ruili, AU - Chai,Minwei, AU - Cheng,Shanshan, AU - Niu,Zhiyuan, AU - Qiu,Guo Yu, Y1 - 2018/07/09/ PY - 2017/12/31/received PY - 2018/06/20/accepted PY - 2018/7/11/pubmed PY - 2019/5/1/medline PY - 2018/7/11/entrez KW - MDA KW - Mangrove plant KW - Multiple heavy metal stresses KW - Photosynthetic characteristics KW - Proline SP - 135 EP - 148 JF - Environmental geochemistry and health JO - Environ Geochem Health VL - 41 IS - 1 N2 - Heavy metals are considered important environmental contaminants, and their mixture toxicity on plants has complex mutual interactions. The interactive effects of heavy metals on growth, photosynthetic parameters, lipid peroxidation and compatible osmolytes were studied in Kandelia obovata grown for 5 months in sediment treated with combinations of lead (Pb), zinc (Zn) and copper (Cu). The results showed no significant reduction of biomass under heavy metal stresses, except for decreased root biomass under higher Pb + Cu treatment, indicating high tolerance of K. obovata to heavy metal stress. Only the photosynthetic parameters, including net photosynthetic rate (Pn), stomatal conductance (Gs) and transpiration rate (Tr), decreased with increasing concentration of treatments (except for Pb + Cu and Pb + Zn + Cu). Trinary treatment (Pb + Zn + Cu) increased biomass and the photosynthetic parameters when compared to the external addition of binary metals. In the roots, biomass and soluble sugar content were lower under binary than trinary treatments, indicating that the combination of Zn and Cu exhibited improved effects of alleviating toxicity than each of them alone in Pb-containing combined treatments. In the leaves, Zn-containing combined treatments significantly decreased malondialdehyde (MDA), soluble sugar and proline content in low concentration, while Pb + Cu treatments significantly increased these parameters (P < 0.05). The correlation analysis showed that leaf MDA and proline content were negatively correlated with Zn concentration (P < 0.05). Zn could alleviate the effects of combined heavy metal stress, and Pb + Cu treatment showed synergistic effects in leaves. The positive correlations between MDA content and the osmotic parameters showed that osmotic stress and lipid membranes oxidation exist simultaneously under multiple heavy metal stresses. Therefore, biomass, Tr, leaf MDA, leaf proline content and soluble sugar content could indicate metal mixture toxicity to mangrove seedlings. SN - 1573-2983 UR - https://www.unboundmedicine.com/medline/citation/29987496/Interactive_effects_of_single_binary_and_trinary_trace_metals__lead_zinc_and_copper__on_the_physiological_responses_of_Kandelia_obovata_seedlings_ DB - PRIME DP - Unbound Medicine ER -