TY - JOUR
T1 - Polyphenols, tannins and antioxidant activities of eight true mangrove plant species in South China
AU - Wang, Ying
AU - Zhu, Haowen
AU - Tam, Nora Fung Yee
N1 - Funding Information:
Acknowledgments The work described in this paper was financially supported by the Public Science and Technology Research Funds Projects of Ocean (200905009-4), the Innovation of Science and Technology Commission of Shenzhen Municipality (JCYJ20120829161727) and the Foundation of Human Settlements and Environment Commission of Shenzhen Municipality (2009).
PY - 2014/1
Y1 - 2014/1
N2 - Background and aims: (i) compare the concentrations of total polyphenols (TP) and condensed tannins (CT), and CT profiles in different organs of mature trees and seedlings of eight true mangrove species in Hong Kong; (ii) examine the antioxidant activities of CT and (iii) relate the non-enzymatic antioxidative defence system with the vertical zonation pattern of mangrove species. Methods: Mature trees and seedlings of eight species were collected from a Hong Kong mangrove swamp to determine TP and CT concentrations and the antioxidant activities of CT. Results: According to TP concentrations, the true mangrove species could be broadly classified into three groups, (i) Lumnitzera racemosa and Aegiceras corniculatum > (ii) Heritiera littoralis, Excoecaria agallocha, Bruguiera gymnorrhiza and Kandelia obovata > (iii) Acanthus ilicifolius and Avicennia marina. The last two are pioneer species in the most foreshore location. They also had significantly lower antioxidant activities, CT concentrations and different CT profiles than the other six species in mid- and low-tides. Conclusions: Classification of the eight true mangrove species into three groups based on polyphenols was similar to their vertical zonation from land to sea. The relationships between these antioxidants and zonation should be further verified by transplantation studies.
AB - Background and aims: (i) compare the concentrations of total polyphenols (TP) and condensed tannins (CT), and CT profiles in different organs of mature trees and seedlings of eight true mangrove species in Hong Kong; (ii) examine the antioxidant activities of CT and (iii) relate the non-enzymatic antioxidative defence system with the vertical zonation pattern of mangrove species. Methods: Mature trees and seedlings of eight species were collected from a Hong Kong mangrove swamp to determine TP and CT concentrations and the antioxidant activities of CT. Results: According to TP concentrations, the true mangrove species could be broadly classified into three groups, (i) Lumnitzera racemosa and Aegiceras corniculatum > (ii) Heritiera littoralis, Excoecaria agallocha, Bruguiera gymnorrhiza and Kandelia obovata > (iii) Acanthus ilicifolius and Avicennia marina. The last two are pioneer species in the most foreshore location. They also had significantly lower antioxidant activities, CT concentrations and different CT profiles than the other six species in mid- and low-tides. Conclusions: Classification of the eight true mangrove species into three groups based on polyphenols was similar to their vertical zonation from land to sea. The relationships between these antioxidants and zonation should be further verified by transplantation studies.
KW - Condensed tannins
KW - Free radical scavenging potential
KW - Mangrove
KW - Reactive oxygen species (ROS)
KW - Vertical zonation
UR - http://www.scopus.com/inward/record.url?scp=84890869161&partnerID=8YFLogxK
U2 - 10.1007/s11104-013-1912-9
DO - 10.1007/s11104-013-1912-9
M3 - Article
AN - SCOPUS:84890869161
SN - 0032-079X
VL - 374
SP - 549
EP - 563
JO - Plant and Soil
JF - Plant and Soil
IS - 1-2
ER -