Growth response and tissue accumulation trends of herbaceous wetland plant species exposed to elevated aqueous mercury levels

Autor:	Jonathan M. Willis, Mark W. Hester, Robert P. Gambrell
Rok vydání:	2010
Předmět:	chemistry.chemical_element Plant Development Plant Science Panicum Typhaceae Saururaceae Botany Environmental Chemistry Biomass Eleocharis Typha Plants Medicinal biology Environmental Exposure Mercury Herbaceous plant Plants biology.organism_classification Panicum hemitomon Hydroponics Pollution Saururus cernuus Mercury (element) Horticulture chemistry Eleocharis parvula Wetlands Juncus
Zdroj:	International journal of phytoremediation. 12(6)
ISSN:	1522-6514
Popis:	The impacts of elevated aqueous mercury levels (0, 2, and 4 ppm) on the growth status and mercury tissue concentrations of Eleocharis parvula, Saururus cernuus, Juncus effuses, Typha latifolia, and Panicum hemitomon were determined. Both short-term (net CO2 assimilation) and long-term (biomass) indicators of plant growth status suggest that Eleocharis parvula, Saururus cernuus, and Juncus effuses were relatively unimpacted by elevated mercury levels, whereas Typha latifolia and Panicum hemitomon were somewhat impacted at elevated mercury levels. Eleocharis parvula, Panicum hemitomon, and Typha latifolia generally had the greatest overall belowground tissue concentrations of mercury (2 ppm treatment: 7.21, 7.32, and 9.64 ppm respectively; 4 ppm treatment: 16.23, 18.23, and 13.98 ppm, respectively) and aboveground tissue concentrations of mercury (2 ppm treatment: 0.01, 0.04, 0.02; 4 ppm treatment: 0.26; 0.11; 0.17 ppm, respectively). However, the species investigated in this study demonstrated lower levels of mercury accumulation into tissues when compared with similar investigations of other aquatic plants, suggesting that the above species are not optimal for phytoremediation efforts.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1480d4b25f0235e11ae03c49de4eef4a https://pubmed.ncbi.nlm.nih.gov/21166283 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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