TY - JOUR
T1 - Effects of environmental stresses on the responses of mangrove plants to spent lubricating oil
AU - Ke, Lin
AU - Zhang, Chunguang
AU - Guo, Chuling
AU - Lin, Guang Hui
AU - Tam, Nora Fung Yee
N1 - Funding Information:
The work described in this paper was supported by a research grant from the Technology and Information Bureau of the Shenzhen Municipal Government to support the Exclusive Supporting Plan for Shenzhen Hong Kong Innovation Circle (Project No.: [2008] 121).
PY - 2011
Y1 - 2011
N2 - The influence of different environmental stresses, including salinity (5-35‰), tidal cycle (6/6, 12/12 and 24/24h of high/low tidal regimes) and nutrient addition (1-6 times background nitrogen and phosphorus content) on Bruguiera gymnorrhiza and Aegiceras corniculatum grown in sediment contaminated with spent lubricating oil (7.5Lm-2) were investigated. The oil-treated 1-year-old mangrove seedlings subject to low (5‰) and high (35‰) salinity had significantly more reduction in growth, more release of superoxide radical (O2-) and higher activity of superoxide dismutase (SOD) than those subject to moderate salinity (15‰). Extended flooding (24/24h of high/low tidal regime) enhanced O2- release and malondialdehyde (MDA) content in both oil-treated species but had little negative effects on biomass production (P>0.05) except the stem of A. corniculatum (P=0.012). The addition of nutrients had no beneficial or even posed harmful effects on the growth and cellular responses of the oil-treated seedlings.
AB - The influence of different environmental stresses, including salinity (5-35‰), tidal cycle (6/6, 12/12 and 24/24h of high/low tidal regimes) and nutrient addition (1-6 times background nitrogen and phosphorus content) on Bruguiera gymnorrhiza and Aegiceras corniculatum grown in sediment contaminated with spent lubricating oil (7.5Lm-2) were investigated. The oil-treated 1-year-old mangrove seedlings subject to low (5‰) and high (35‰) salinity had significantly more reduction in growth, more release of superoxide radical (O2-) and higher activity of superoxide dismutase (SOD) than those subject to moderate salinity (15‰). Extended flooding (24/24h of high/low tidal regime) enhanced O2- release and malondialdehyde (MDA) content in both oil-treated species but had little negative effects on biomass production (P>0.05) except the stem of A. corniculatum (P=0.012). The addition of nutrients had no beneficial or even posed harmful effects on the growth and cellular responses of the oil-treated seedlings.
KW - Antioxidative responses
KW - Nutrient deficiency
KW - Salinity
KW - Tidal cycle
UR - http://www.scopus.com/inward/record.url?scp=79960344275&partnerID=8YFLogxK
U2 - 10.1016/j.marpolbul.2011.05.016
DO - 10.1016/j.marpolbul.2011.05.016
M3 - Article
C2 - 21664628
AN - SCOPUS:79960344275
SN - 0025-326X
VL - 63
SP - 385
EP - 395
JO - Marine Pollution Bulletin
JF - Marine Pollution Bulletin
IS - 5-12
ER -