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Temporal changes of polyphenols and enzyme activities in seedlings of Kandelia obovata under lead and manganese stresses.
Mar Pollut Bull. 2011; 63(5-12):438-44.MP

Abstract

The temporal responses of peroxidase (POD), superoxide dismutase (SOD), total polyphenols (TP), extractable condensed tannins (ECT) to different levels of lead (Pb) or manganese (Mn) stress, as well as the metal accumulation, in seedlings of Kandelia obovata were investigated. Both stress time and stress intensity had significant effects with significant accumulation of Pb and Mn in roots at Day 1. Pb and Mn showed no significant effects on root or leaf TP and ECT at Day 1. Prolonged exposure to metals caused significant drops of root TP and ECT but increased in leaves at Days 7 and 49. POD activities decreased in both roots and leaves at Day 1, while POD and SOD both increased under moderate levels of Pb and Mn at Day 7. The present study showed that antioxidative enzyme activities were more sensitive indicators to Pb or Mn stresses than phenolic compounds.

Authors+Show Affiliations

Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.No affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

21612799

Citation

Yan, Zhong Zheng, and Nora Fung Yee Tam. "Temporal Changes of Polyphenols and Enzyme Activities in Seedlings of Kandelia Obovata Under Lead and Manganese Stresses." Marine Pollution Bulletin, vol. 63, no. 5-12, 2011, pp. 438-44.
Yan ZZ, Tam NF. Temporal changes of polyphenols and enzyme activities in seedlings of Kandelia obovata under lead and manganese stresses. Mar Pollut Bull. 2011;63(5-12):438-44.
Yan, Z. Z., & Tam, N. F. (2011). Temporal changes of polyphenols and enzyme activities in seedlings of Kandelia obovata under lead and manganese stresses. Marine Pollution Bulletin, 63(5-12), 438-44. https://doi.org/10.1016/j.marpolbul.2011.04.027
Yan ZZ, Tam NF. Temporal Changes of Polyphenols and Enzyme Activities in Seedlings of Kandelia Obovata Under Lead and Manganese Stresses. Mar Pollut Bull. 2011;63(5-12):438-44. PubMed PMID: 21612799.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Temporal changes of polyphenols and enzyme activities in seedlings of Kandelia obovata under lead and manganese stresses. AU - Yan,Zhong Zheng, AU - Tam,Nora Fung Yee, Y1 - 2011/05/25/ PY - 2010/07/07/received PY - 2011/04/15/revised PY - 2011/04/15/accepted PY - 2011/5/27/entrez PY - 2011/5/27/pubmed PY - 2011/10/8/medline SP - 438 EP - 44 JF - Marine pollution bulletin JO - Mar Pollut Bull VL - 63 IS - 5-12 N2 - The temporal responses of peroxidase (POD), superoxide dismutase (SOD), total polyphenols (TP), extractable condensed tannins (ECT) to different levels of lead (Pb) or manganese (Mn) stress, as well as the metal accumulation, in seedlings of Kandelia obovata were investigated. Both stress time and stress intensity had significant effects with significant accumulation of Pb and Mn in roots at Day 1. Pb and Mn showed no significant effects on root or leaf TP and ECT at Day 1. Prolonged exposure to metals caused significant drops of root TP and ECT but increased in leaves at Days 7 and 49. POD activities decreased in both roots and leaves at Day 1, while POD and SOD both increased under moderate levels of Pb and Mn at Day 7. The present study showed that antioxidative enzyme activities were more sensitive indicators to Pb or Mn stresses than phenolic compounds. SN - 1879-3363 UR - https://www.unboundmedicine.com/medline/citation/21612799/Temporal_changes_of_polyphenols_and_enzyme_activities_in_seedlings_of_Kandelia_obovata_under_lead_and_manganese_stresses_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0025-326X(11)00229-3 DB - PRIME DP - Unbound Medicine ER -