1. Dose and accumulative effects of spent lubricating oil on four common mangrove plants in South China.
- Author
-
Ke L, Zhang C, Wong YS, and Tam NF
- Subjects
- Biomass, China, Dose-Response Relationship, Drug, Hong Kong, Malondialdehyde metabolism, Oxidative Stress drug effects, Plant Leaves genetics, Plant Leaves growth & development, Plant Leaves metabolism, Plant Roots genetics, Plant Roots growth & development, Plant Roots metabolism, Rhizophoraceae classification, Rhizophoraceae growth & development, Rhizophoraceae metabolism, Seedlings genetics, Seedlings growth & development, Seedlings metabolism, Superoxide Dismutase metabolism, Superoxides metabolism, Geologic Sediments chemistry, Lubricants toxicity, Oils toxicity, Rhizophoraceae drug effects
- Abstract
The growth of four mangrove species seedlings, namely Bruguiera gymnorrhiza, Kandelia obovata, Aegiceras corniculatum and Acanthus ilicifolius in sediments contaminated by spent lubricating oil, even at the lowest oil dose (2.5 L m(-2)), showed different degrees of sub-lethal damages. All the seedlings of K. obovata and A. corniculatum were killed at 10 L m(-2) oil, while the lethal oil dose was 15 L m(-2) for A. ilicifolius seedlings. B. gymnorrhiza was the most tolerant species to oil pollution, which could survive under the highest oil dose treatment (15 L m(-2)). Biochemical responses including superoxide radical (O(2)(-)) release, superoxide dismutase (SOD) activity and malonyldialdehyde (MDA) content in both leaves and roots of the oil-treated seedlings were increased significantly with oil dose, and presented a positive relationship with leaf and root biomass., (Copyright © 2010 Elsevier Inc. All rights reserved.)
- Published
- 2011
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