Effects of decabromodiphenyl ether (BDE-209) on a mangrove plant, Kandelia obovata and the uptake, translocation and accumulation of BDE-209

Due to close proximity urban development, mangroves exposed the contamination of polybrominated diphenyl ethers (PBDEs). Decabromodiphenyl ether (BDE-209) is one most predominant PBDE congener. The present study aimed investigate toxic effects BDE-209 on antioxidative and non-antioxidative responses Kandelia obovata , a very common mangrove species, under different concentrations BDE-209, 0.1, 1, 5 10 mg l -1 . did not exhibit any negative growth K. seedlings. stimulatory enzymes including superoxide dismutase, peroxidase catalase only occurred in weeks 1 4 diminished week 8. total polyphenols (TP) extractable condensed tannins (ECT) were affected by BDE-209. production O 2 · - was induced at high level (10 ). H treatment. taken up roots translocated above-ground tissues, accumulated plant tissues with declined order root > propagule stem leaf. Although has higher molecular weight log Kow than other congeners, seedlings could absorb, translocate accumulate These findings suggested that plants take up, PBDEs, are less congeners but more difficult be removed systems.