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Metal tolerance capacity and antioxidant responses of new Salix spp. clones in a combined Cd-Pb polluted system

To investigate the physiochemical characteristics of two new clones, Salix matsudana ‘J172’ (A7) and Salix matsudana ‘Yankang1’ (A64) in combined Cd-Pb contaminated systems, a hydroponic experiment was designed. The plant biomass, photosynthesis, antioxidant responses and the accumulation of metals...

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Autores principales: Zhang, Chuanfeng, Yang, Baoshan, Wang, Hui, Xu, Xiaohan, Shi, Jiaxing, Qin, Guanghua
Formato: Online Artículo Texto
Lenguaje:English
Publicado: PeerJ Inc. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9762249/
https://www.ncbi.nlm.nih.gov/pubmed/36545381
http://dx.doi.org/10.7717/peerj.14521
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author Zhang, Chuanfeng
Yang, Baoshan
Wang, Hui
Xu, Xiaohan
Shi, Jiaxing
Qin, Guanghua
author_facet Zhang, Chuanfeng
Yang, Baoshan
Wang, Hui
Xu, Xiaohan
Shi, Jiaxing
Qin, Guanghua
author_sort Zhang, Chuanfeng
collection PubMed
description To investigate the physiochemical characteristics of two new clones, Salix matsudana ‘J172’ (A7) and Salix matsudana ‘Yankang1’ (A64) in combined Cd-Pb contaminated systems, a hydroponic experiment was designed. The plant biomass, photosynthesis, antioxidant responses and the accumulation of metals in different plant parts (leaf, stem, and root) were measured after 35-day treatments with Cd (15, 30 µM) and Pb (250, 500 µM). The results showed that exposure to Cd-Pb decreased the biomass but increased the net photosynthetic rate for both A7 and A64, demonstrating that photosynthesis may be one of the metabolic processes used to resist Cd-Pb stress. Compared with control, roots exposed to Cd-Pb had higher activity of superoxide dismutase and more malondialdehyde concentrations, which indicated the roots of both clones were apt to be damaged. The concentrations of soluble protein were obviously higher in the roots of A64 than A7, indicating the roles of the antioxidative substance were different between two willow clones. Soluble protein also had significant relationship with translocation factors from accumulation in roots of A64, which illustrated it played important roles in the tolerance of A64 roots to heavy metals. The roots could accumulate more Pb rather than transport to the shoots compared with Cd. The tolerance index was more than 85% on average for both clones under all the treatments, indicating their tolerance capacities to the combined stress of Cd and Pb are strong under the tested metal levels. Both clones are the good candidates for phytoremediation of Cd and Pb by the root filtration in the combined contamination environment.
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spelling pubmed-97622492022-12-20 Metal tolerance capacity and antioxidant responses of new Salix spp. clones in a combined Cd-Pb polluted system Zhang, Chuanfeng Yang, Baoshan Wang, Hui Xu, Xiaohan Shi, Jiaxing Qin, Guanghua PeerJ Ecotoxicology To investigate the physiochemical characteristics of two new clones, Salix matsudana ‘J172’ (A7) and Salix matsudana ‘Yankang1’ (A64) in combined Cd-Pb contaminated systems, a hydroponic experiment was designed. The plant biomass, photosynthesis, antioxidant responses and the accumulation of metals in different plant parts (leaf, stem, and root) were measured after 35-day treatments with Cd (15, 30 µM) and Pb (250, 500 µM). The results showed that exposure to Cd-Pb decreased the biomass but increased the net photosynthetic rate for both A7 and A64, demonstrating that photosynthesis may be one of the metabolic processes used to resist Cd-Pb stress. Compared with control, roots exposed to Cd-Pb had higher activity of superoxide dismutase and more malondialdehyde concentrations, which indicated the roots of both clones were apt to be damaged. The concentrations of soluble protein were obviously higher in the roots of A64 than A7, indicating the roles of the antioxidative substance were different between two willow clones. Soluble protein also had significant relationship with translocation factors from accumulation in roots of A64, which illustrated it played important roles in the tolerance of A64 roots to heavy metals. The roots could accumulate more Pb rather than transport to the shoots compared with Cd. The tolerance index was more than 85% on average for both clones under all the treatments, indicating their tolerance capacities to the combined stress of Cd and Pb are strong under the tested metal levels. Both clones are the good candidates for phytoremediation of Cd and Pb by the root filtration in the combined contamination environment. PeerJ Inc. 2022-12-16 /pmc/articles/PMC9762249/ /pubmed/36545381 http://dx.doi.org/10.7717/peerj.14521 Text en ©2022 Zhang et al. https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
spellingShingle Ecotoxicology
Zhang, Chuanfeng
Yang, Baoshan
Wang, Hui
Xu, Xiaohan
Shi, Jiaxing
Qin, Guanghua
Metal tolerance capacity and antioxidant responses of new Salix spp. clones in a combined Cd-Pb polluted system
title Metal tolerance capacity and antioxidant responses of new Salix spp. clones in a combined Cd-Pb polluted system
title_full Metal tolerance capacity and antioxidant responses of new Salix spp. clones in a combined Cd-Pb polluted system
title_fullStr Metal tolerance capacity and antioxidant responses of new Salix spp. clones in a combined Cd-Pb polluted system
title_full_unstemmed Metal tolerance capacity and antioxidant responses of new Salix spp. clones in a combined Cd-Pb polluted system
title_short Metal tolerance capacity and antioxidant responses of new Salix spp. clones in a combined Cd-Pb polluted system
title_sort metal tolerance capacity and antioxidant responses of new salix spp. clones in a combined cd-pb polluted system
topic Ecotoxicology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9762249/
https://www.ncbi.nlm.nih.gov/pubmed/36545381
http://dx.doi.org/10.7717/peerj.14521
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