Jingjing Yang
A comparison of growth on mercuric chloride for three Lemnaceae species reveals differences in growth dynamics that effect their suitability for use in either monitoring or remediating ecosystems contaminated with mercury
Yang, Jingjing; Li, Gaojie; Bishopp, Anthony; Heenatigala, P.P.M.; Hu, Shiqi; Chen, Yan; Wu, Zhigang; Kumar, Sunjeet; Duan, Pengfei; Yao, Lunguang; Hou, Hongwei
Authors
Gaojie Li
ANTHONY BISHOPP Anthony.Bishopp@nottingham.ac.uk
Professor of Plant Development Biology
P.P.M. Heenatigala
Shiqi Hu
Yan Chen
Zhigang Wu
Sunjeet Kumar
Pengfei Duan
Lunguang Yao
Hongwei Hou
Abstract
Mercury (Hg) is a toxic heavy metal that can alter the ecological balance when it contaminates aquatic ecosystems. Previously, researchers have used various Lemnaceae species either to monitor and/or remove heavy metals from freshwater systems. As Hg contamination is a pressing issue for aquatic systems worldwide, we assessed its impact on the growth of three commonly species of Lemnaceae - Lemna gibba 6745, Lemna minor 6580 and Spirodela polyrhiza 5543. We exposed plants to different concentrations of mercuric chloride (HgCl₂) and monitored their growth, including relative growth rate, frond number (FN), and fresh weight (FW). These data were coupled with measurements of starch content, levels of photosynthetic pigment and the activities of antioxidant substances. The growth of all three lines showed significant negative correlations with Hg concentrations, and starch content, photosynthetic pigment, soluble protein and antioxidant enzymes levels were all clearly affected. Our results indicate that the L. gibba line used in this study was the most suitable of the three for biomonitoring of water contaminated with Hg. Accumulation of Hg was highest in the S. polyrhiza line with a bioconcentration factor over 1,000, making this line the most suitable of the three tested for use in an Hg bioremediation system.
Citation
Yang, J., Li, G., Bishopp, A., Heenatigala, P., Hu, S., Chen, Y., …Hou, H. (2018). A comparison of growth on mercuric chloride for three Lemnaceae species reveals differences in growth dynamics that effect their suitability for use in either monitoring or remediating ecosystems contaminated with mercury. Frontiers in Chemistry, 6(112), https://doi.org/10.3389/fchem.2018.00112
Journal Article Type | Article |
---|---|
Acceptance Date | Mar 26, 2018 |
Online Publication Date | Apr 16, 2018 |
Publication Date | Apr 16, 2018 |
Deposit Date | Apr 20, 2018 |
Publicly Available Date | Apr 20, 2018 |
Journal | Frontiers in Chemistry |
Electronic ISSN | 2296-2646 |
Publisher | Frontiers Media |
Peer Reviewed | Peer Reviewed |
Volume | 6 |
Issue | 112 |
DOI | https://doi.org/10.3389/fchem.2018.00112 |
Keywords | duckweed, mercuric chloride, toxicity test, growth indices, chemical composition, biomonitoring, bioremediation |
Public URL | https://nottingham-repository.worktribe.com/output/926489 |
Publisher URL | https://www.frontiersin.org/articles/10.3389/fchem.2018.00112/full |
Additional Information | First published by Frontiers Media as: Yang J, Li G, Bishopp A, Heenatigala PPM, Hu S, Chen Y, Wu Z, Kumar S, Duan P, Yao L and Hou H (2018) A Comparison of Growth on Mercuric Chloride for Three Lemnaceae Species Reveals Differences in Growth Dynamics That Effect Their Suitability for Use in Either Monitoring or Remediating Ecosystems Contaminated With Mercury. Front. Chem. 6:112. doi: 10.3389/fchem.2018.00112 |
Contract Date | Apr 20, 2018 |
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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf
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