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Differences in lead tolerance between Kandelia obovata and Acanthus ilicifolius seedlings under varying treatment times.
Aquat Toxicol. 2013 Jan 15; 126:154-62.AT

Abstract

The effects of short-term (1 day) and long-term (49 days) of lead (Pb) stress on growth and physiological responses in the leaves and roots of two mangrove plants, Kandelia obovata and Acanthus ilicifolius, were compared. The growth of both species was affected by Pb at Day 49, whereas the root to shoot ratio of K. obovata remained unchanged. Compared with A. ilicifolius, less Pb accumulated in leaves of K. obovata, which indicates that this species is a typical Pb-excluder. Significant linear relationships were observed between the Pb concentrations in the roots and leaves and the Pb treatment concentrations in the sediments in A. ilicifolius but not in K. obovata. The proline concentration increased in both mangrove species at Day 49, especially in A. ilicifolius, but no changes were observed at Day 1. The tolerant species K. obovata tended to acclimate to metal stress by restricting the translocation of toxic metals and by increasing and/or maintaining high superoxide dismutase (SOD) activity, minimizing lipid peroxidation, and exhibiting prolonged unaltered growth (49 days) under Pb treatment. The non-tolerant species, A. ilicifolius, did not acclimate to metal stress, its leaves were seriously damaged with significant increased MDA content, and its SOD activity was decreased. An increase of endogenous jasmonic acid concentration was observed only in K. obovata, both at Day 1 and at Day 49, which suggests that this hormone plays an important role in metal tolerance under short-term and long-term metal treatment.

Authors+Show Affiliations

State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, China.No affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

23202134

Citation

Yan, Zhongzheng, and Nora Fung Yee Tam. "Differences in Lead Tolerance Between Kandelia Obovata and Acanthus Ilicifolius Seedlings Under Varying Treatment Times." Aquatic Toxicology (Amsterdam, Netherlands), vol. 126, 2013, pp. 154-62.
Yan Z, Tam NF. Differences in lead tolerance between Kandelia obovata and Acanthus ilicifolius seedlings under varying treatment times. Aquat Toxicol. 2013;126:154-62.
Yan, Z., & Tam, N. F. (2013). Differences in lead tolerance between Kandelia obovata and Acanthus ilicifolius seedlings under varying treatment times. Aquatic Toxicology (Amsterdam, Netherlands), 126, 154-62. https://doi.org/10.1016/j.aquatox.2012.10.011
Yan Z, Tam NF. Differences in Lead Tolerance Between Kandelia Obovata and Acanthus Ilicifolius Seedlings Under Varying Treatment Times. Aquat Toxicol. 2013 Jan 15;126:154-62. PubMed PMID: 23202134.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Differences in lead tolerance between Kandelia obovata and Acanthus ilicifolius seedlings under varying treatment times. AU - Yan,Zhongzheng, AU - Tam,Nora Fung Yee, Y1 - 2012/10/29/ PY - 2012/05/09/received PY - 2012/10/15/revised PY - 2012/10/19/accepted PY - 2012/12/4/entrez PY - 2012/12/4/pubmed PY - 2013/2/16/medline SP - 154 EP - 62 JF - Aquatic toxicology (Amsterdam, Netherlands) JO - Aquat Toxicol VL - 126 N2 - The effects of short-term (1 day) and long-term (49 days) of lead (Pb) stress on growth and physiological responses in the leaves and roots of two mangrove plants, Kandelia obovata and Acanthus ilicifolius, were compared. The growth of both species was affected by Pb at Day 49, whereas the root to shoot ratio of K. obovata remained unchanged. Compared with A. ilicifolius, less Pb accumulated in leaves of K. obovata, which indicates that this species is a typical Pb-excluder. Significant linear relationships were observed between the Pb concentrations in the roots and leaves and the Pb treatment concentrations in the sediments in A. ilicifolius but not in K. obovata. The proline concentration increased in both mangrove species at Day 49, especially in A. ilicifolius, but no changes were observed at Day 1. The tolerant species K. obovata tended to acclimate to metal stress by restricting the translocation of toxic metals and by increasing and/or maintaining high superoxide dismutase (SOD) activity, minimizing lipid peroxidation, and exhibiting prolonged unaltered growth (49 days) under Pb treatment. The non-tolerant species, A. ilicifolius, did not acclimate to metal stress, its leaves were seriously damaged with significant increased MDA content, and its SOD activity was decreased. An increase of endogenous jasmonic acid concentration was observed only in K. obovata, both at Day 1 and at Day 49, which suggests that this hormone plays an important role in metal tolerance under short-term and long-term metal treatment. SN - 1879-1514 UR - https://www.unboundmedicine.com/medline/citation/23202134/Differences_in_lead_tolerance_between_Kandelia_obovata_and_Acanthus_ilicifolius_seedlings_under_varying_treatment_times_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0166-445X(12)00292-5 DB - PRIME DP - Unbound Medicine ER -