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Hormesis phenomena under Cd stress in a hyperaccumulator--Lonicera japonica Thunb.(Report)

Byline: Lian Jia (1,2), Xingyuan He (1), Wei Chen (1), Zhouli Liu (1), Yanqing Huang (1,3), Shuai Yu (1) Keywords: Lonicera japonica Thunb; Cadmium; Hormesis; Phytoremediation; Oxidative stress Abstract: A hydroponic experiment was carried out to investigate possible hormetic response induced by cad... Full description

Journal Title: Ecotoxicology April, 2013, Vol.22(3), p.476(10)
Main Author: Jia, Lian
Other Authors: He, Xingyuan , Chen, Wei , Liu, Zhouli , Huang, Yanqing , Yu, Shuai
Format: Electronic Article Electronic Article
Language: English
Subjects:
Quelle: Cengage Learning, Inc.
ID: ISSN: 0963-9292
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recordid: gale_ofa323771455
title: Hormesis phenomena under Cd stress in a hyperaccumulator--Lonicera japonica Thunb.(Report)
format: Article
creator:
  • Jia, Lian
  • He, Xingyuan
  • Chen, Wei
  • Liu, Zhouli
  • Huang, Yanqing
  • Yu, Shuai
subjects:
  • Bioremediation
  • Soil Ecology
  • Photosynthesis
  • Superoxides
ispartof: Ecotoxicology, April, 2013, Vol.22(3), p.476(10)
description: Byline: Lian Jia (1,2), Xingyuan He (1), Wei Chen (1), Zhouli Liu (1), Yanqing Huang (1,3), Shuai Yu (1) Keywords: Lonicera japonica Thunb; Cadmium; Hormesis; Phytoremediation; Oxidative stress Abstract: A hydroponic experiment was carried out to investigate possible hormetic response induced by cadmium (Cd) in a potential hyperaccumulator-Lonicera japonica Thunb. The results showed that Cd at low concentrations induced a significant increase in plant growth, leaf water content and content of photosynthetic pigments in L. japonica, but decreased them at high concentrations, displayed inverted U-shaped dose response curves, confirming a typical biphasic hormetic response. The U-shaped dose response curves were displayed in malondialdehyde (MDA) and electrolyte leakage in leaves at low doses of Cd, indicating reduce oxidative stress and toxic effect. The increase of superoxide dismutase (SOD) and catalase (CAT) activities was observed along with the increased Cd concentration, indicative of increase in anti-oxidative capacity that ensures redox homeostasis is maintained. After 28 days exposure to 10 mg L.sup.-1 Cd, stem and leaf Cd concentrations reached 502.96 +- 28.90 and 103.22 +- 5.62 mg kg.sup.-1 DW, respectively and the plant had high bioaccumulation coefficient (BC) and translocation factor (TF ). Moreover, the maximum TF value was found at 2.5 mg L.sup.-1 Cd treatment, implying that low Cd treatment improved the ability to transfer Cd from medium via roots to aerial structures. Taking together, L. japonica could be considered as a new plant to investigate the underlying mechanisms of hormesis and Cd tolerance. Our results suggest that hormetic effects should be taken into consideration in phytoremediation of Cd-contaminated soil. Author Affiliation: (1) State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, 72 Wenhua Road, Shenhe District, Shenyang, 110016, People's Republic of China (2) Graduate University of Chinese Academy of Sciences, Jia 19 Yuquan Road, Beijing, 100039, People's Republic of China (3) Shenyang Arboretum, Institute of Applied Ecology, Chinese Academy of Sciences, 52 Wanliutang Road, Shenhe District, Shenyang, 110015, People's Republic of China Article History: Registration Date: 16/01/2013 Accepted Date: 16/01/2013 Online Date: 29/01/2013
language: English
source: Cengage Learning, Inc.
identifier: ISSN: 0963-9292
fulltext: fulltext
issn:
  • 0963-9292
  • 09639292
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titleHormesis phenomena under Cd stress in a hyperaccumulator--Lonicera japonica Thunb.(Report)
creatorJia, Lian ; He, Xingyuan ; Chen, Wei ; Liu, Zhouli ; Huang, Yanqing ; Yu, Shuai
ispartofEcotoxicology, April, 2013, Vol.22(3), p.476(10)
identifierISSN: 0963-9292
subjectBioremediation ; Soil Ecology ; Photosynthesis ; Superoxides
descriptionByline: Lian Jia (1,2), Xingyuan He (1), Wei Chen (1), Zhouli Liu (1), Yanqing Huang (1,3), Shuai Yu (1) Keywords: Lonicera japonica Thunb; Cadmium; Hormesis; Phytoremediation; Oxidative stress Abstract: A hydroponic experiment was carried out to investigate possible hormetic response induced by cadmium (Cd) in a potential hyperaccumulator-Lonicera japonica Thunb. The results showed that Cd at low concentrations induced a significant increase in plant growth, leaf water content and content of photosynthetic pigments in L. japonica, but decreased them at high concentrations, displayed inverted U-shaped dose response curves, confirming a typical biphasic hormetic response. The U-shaped dose response curves were displayed in malondialdehyde (MDA) and electrolyte leakage in leaves at low doses of Cd, indicating reduce oxidative stress and toxic effect. The increase of superoxide dismutase (SOD) and catalase (CAT) activities was observed along with the increased Cd concentration, indicative of increase in anti-oxidative capacity that ensures redox homeostasis is maintained. After 28 days exposure to 10 mg L.sup.-1 Cd, stem and leaf Cd concentrations reached 502.96 +- 28.90 and 103.22 +- 5.62 mg kg.sup.-1 DW, respectively and the plant had high bioaccumulation coefficient (BC) and translocation factor (TF ). Moreover, the maximum TF value was found at 2.5 mg L.sup.-1 Cd treatment, implying that low Cd treatment improved the ability to transfer Cd from medium via roots to aerial structures. Taking together, L. japonica could be considered as a new plant to investigate the underlying mechanisms of hormesis and Cd tolerance. Our results suggest that hormetic effects should be taken into consideration in phytoremediation of Cd-contaminated soil. Author Affiliation: (1) State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, 72 Wenhua Road, Shenhe District, Shenyang, 110016, People's Republic of China (2) Graduate University of Chinese Academy of Sciences, Jia 19 Yuquan Road, Beijing, 100039, People's Republic of China (3) Shenyang Arboretum, Institute of Applied Ecology, Chinese Academy of Sciences, 52 Wanliutang Road, Shenhe District, Shenyang, 110015, People's Republic of China Article History: Registration Date: 16/01/2013 Accepted Date: 16/01/2013 Online Date: 29/01/2013
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descriptionByline: Lian Jia (1,2), Xingyuan He (1), Wei Chen (1), Zhouli Liu (1), Yanqing Huang (1,3), Shuai Yu (1) Keywords: Lonicera japonica Thunb; Cadmium; Hormesis; Phytoremediation; Oxidative stress Abstract: A hydroponic experiment was carried out to investigate possible hormetic response induced by cadmium (Cd) in a potential hyperaccumulator-Lonicera japonica Thunb. The results showed that Cd at low concentrations induced a significant increase in plant growth, leaf water content and content of photosynthetic pigments in L. japonica, but decreased them at high concentrations, displayed inverted U-shaped dose response curves, confirming a typical biphasic hormetic response. The U-shaped dose response curves were displayed in malondialdehyde (MDA) and electrolyte leakage in leaves at low doses of Cd, indicating reduce oxidative stress and toxic effect. The increase of superoxide dismutase (SOD) and catalase (CAT) activities was observed along with the increased Cd concentration, indicative of increase in anti-oxidative capacity that ensures redox homeostasis is maintained. After 28 days exposure to 10 mg L.sup.-1 Cd, stem and leaf Cd concentrations reached 502.96 +- 28.90 and 103.22 +- 5.62 mg kg.sup.-1 DW, respectively and the plant had high bioaccumulation coefficient (BC) and translocation factor (TF ). Moreover, the maximum TF value was found at 2.5 mg L.sup.-1 Cd treatment, implying that low Cd treatment improved the ability to transfer Cd from medium via roots to aerial structures. Taking together, L. japonica could be considered as a new plant to investigate the underlying mechanisms of hormesis and Cd tolerance. Our results suggest that hormetic effects should be taken into consideration in phytoremediation of Cd-contaminated soil. Author Affiliation: (1) State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, 72 Wenhua Road, Shenhe District, Shenyang, 110016, People's Republic of China (2) Graduate University of Chinese Academy of Sciences, Jia 19 Yuquan Road, Beijing, 100039, People's Republic of China (3) Shenyang Arboretum, Institute of Applied Ecology, Chinese Academy of Sciences, 52 Wanliutang Road, Shenhe District, Shenyang, 110015, People's Republic of China Article History: Registration Date: 16/01/2013 Accepted Date: 16/01/2013 Online Date: 29/01/2013
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abstractByline: Lian Jia (1,2), Xingyuan He (1), Wei Chen (1), Zhouli Liu (1), Yanqing Huang (1,3), Shuai Yu (1) Keywords: Lonicera japonica Thunb; Cadmium; Hormesis; Phytoremediation; Oxidative stress Abstract: A hydroponic experiment was carried out to investigate possible hormetic response induced by cadmium (Cd) in a potential hyperaccumulator-Lonicera japonica Thunb. The results showed that Cd at low concentrations induced a significant increase in plant growth, leaf water content and content of photosynthetic pigments in L. japonica, but decreased them at high concentrations, displayed inverted U-shaped dose response curves, confirming a typical biphasic hormetic response. The U-shaped dose response curves were displayed in malondialdehyde (MDA) and electrolyte leakage in leaves at low doses of Cd, indicating reduce oxidative stress and toxic effect. The increase of superoxide dismutase (SOD) and catalase (CAT) activities was observed along with the increased Cd concentration, indicative of increase in anti-oxidative capacity that ensures redox homeostasis is maintained. After 28 days exposure to 10 mg L.sup.-1 Cd, stem and leaf Cd concentrations reached 502.96 +- 28.90 and 103.22 +- 5.62 mg kg.sup.-1 DW, respectively and the plant had high bioaccumulation coefficient (BC) and translocation factor (TF ). Moreover, the maximum TF value was found at 2.5 mg L.sup.-1 Cd treatment, implying that low Cd treatment improved the ability to transfer Cd from medium via roots to aerial structures. Taking together, L. japonica could be considered as a new plant to investigate the underlying mechanisms of hormesis and Cd tolerance. Our results suggest that hormetic effects should be taken into consideration in phytoremediation of Cd-contaminated soil. Author Affiliation: (1) State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, 72 Wenhua Road, Shenhe District, Shenyang, 110016, People's Republic of China (2) Graduate University of Chinese Academy of Sciences, Jia 19 Yuquan Road, Beijing, 100039, People's Republic of China (3) Shenyang Arboretum, Institute of Applied Ecology, Chinese Academy of Sciences, 52 Wanliutang Road, Shenhe District, Shenyang, 110015, People's Republic of China Article History: Registration Date: 16/01/2013 Accepted Date: 16/01/2013 Online Date: 29/01/2013
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