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Int. J. Environ. Res. Public Health 2015, 12(7), 7244-7253; doi:10.3390/ijerph120707244

Arsenic Accumulation and Translocation in Mangrove (Aegiceras corniculatum L.) Grown in Arsenic Contaminated Soils

1
Key Laboratory of Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen 361000, China
2
College of Chemical and Biological Engineering, Hezhou University, Hezhou 542800, China
*
Author to whom correspondence should be addressed.
Academic Editor: Ravi Naidu
Received: 5 May 2015 / Revised: 11 June 2015 / Accepted: 19 June 2015 / Published: 26 June 2015
(This article belongs to the Special Issue Arsenic in Drinking Water: Current Perspectives and Future Directions)
View Full-Text   |   Download PDF [998 KB, uploaded 26 June 2015]   |  

Abstract

Mangrove wetlands serve as both a sink and source for arsenic (As), as mangrove plants are able to uptake and accumulate As. The present study used pot experiments to evaluate As accumulation and translocation in mangrove (Aegiceras corniculatum L.) seedlings grown in As contaminated soils. Results indicated that A. corniculatum seedlings grew normally under As stress with minute growth inhibition and biomass reduction at different As treatment concentrations in a range of 0–150 mg·kg−1. As concentrations in roots, stems and leaves were increased with increasing As treatment concentrations, but As accumulated mainly in roots, with accumulation rates of 74.54%–89.26% of the total As accumulation. In particular, relatively high bioconcentration factor (BCF) in root (2.12–1.79), low BCF in stem (0.44–0.14) and leaf (0.06–0.01), and thereby a low translocation factor (TF) in stem/root (0.21–0.08) and leaf/root (0.02–0.008) were observed. These results demonstrated that A. corniculatum is an As excluder with the innate capacity to tolerate As stress and root tissues may be employed as a bio-indicator of As in polluted sediments. Additionally, A. corniculatum is a potential candidate mangrove species for As phytostabilization in tropical and subtropical estuarine wetlands. View Full-Text
Keywords: arsenic; Aegiceras corniculatum L.; accumulation; translocation; phytostabilization arsenic; Aegiceras corniculatum L.; accumulation; translocation; phytostabilization
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Wu, G.-R.; Hong, H.-L.; Yan, C.-L. Arsenic Accumulation and Translocation in Mangrove (Aegiceras corniculatum L.) Grown in Arsenic Contaminated Soils. Int. J. Environ. Res. Public Health 2015, 12, 7244-7253.

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