Dose and accumulative effects of spent lubricating oil on four common mangrove plants in South China

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

20 Scopus Citations
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Detail(s)

Original languageEnglish
Pages (from-to)55-66
Journal / PublicationEcotoxicology and Environmental Safety
Volume74
Issue number1
Publication statusPublished - Jan 2011

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 (2.5Lm-2), showed different degrees of sub-lethal damages. All the seedlings of K. obovata and A. corniculatum were killed at 10Lm-2 oil, while the lethal oil dose was 15Lm-2 for A. ilicifolius seedlings. B. gymnorrhiza was the most tolerant species to oil pollution, which could survive under the highest oil dose treatment (15Lm-2). Biochemical responses including superoxide radical (O2-) 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. © 2010 Elsevier Inc.

Research Area(s)

  • Dose-response, Hong Kong, Mangrove, Oil phytotoxicity, Oxidative stress, Superoxide dismutase