| Towards a more ecologically relevant assessment of the impact of heavy metals on the photosynthesis of the seagrass, Zostera capricorni. | |
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MedLine Citation:
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PMID: 12398373 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This in situ study used photosynthetic activity (measured as chlorophyll a fluorescence) and photosynthetic pigment concentrations to assess the effect of copper, cadmium, lead and zinc on the seagrass Zostera capricorni. Custom-made portable in situ exposure (PIE) chambers were developed so seagrasses could be dosed within the meadow. Z capricorni was exposed to 0.1 and I mg l(-1) of metal solutions for 10 h. During this time and for the subsequent four-day recovery period, the effective quantum yield of photosystem II (PS II) (deltaF/Fm') was measured. While the results were variable, copper and zinc exposed samples had a depressed deltaF/Fm' during the exposure period. Samples exposed to zinc recovered to pre-exposure levels but those exposed to copper did not. Cadmium and lead did not impact on the chlorophyll a fluorescence and the chlorophyll pigment data supported these findings. This study presents an innovative new application of chlorophyll a fluorescence stress assessment. |
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Authors:
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Catriona M O Macinnis-Ng; Peter J Ralph |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Marine pollution bulletin Volume: 45 ISSN: 0025-326X ISO Abbreviation: Mar. Pollut. Bull. Publication Date: 2002 |
Date Detail:
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Created Date: 2002-10-25 Completed Date: 2003-02-12 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0260231 Medline TA: Mar Pollut Bull Country: England |
Other Details:
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Languages: eng Pagination: 100-6 Citation Subset: IM |
Affiliation:
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Multiscale Ecosystem Research Group, University of Technology, Sydney, NSW, Australia. cate.macinnis@uts.edu.au |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Biological Assay Chlorophyll / analysis Metals, Heavy / adverse effects* Photosynthesis / drug effects* Risk Assessment Water Pollutants / adverse effects* Zosteraceae / drug effects*, physiology* |
| Chemical | |
Reg. No./Substance:
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0/Metals, Heavy; 0/Water Pollutants; 1406-65-1/Chlorophyll; 479-61-8/chlorophyll a |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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