Aquatic Plants for Toxicity Assessment

Mohan, B.; Hosetti, B. B.

doi:10.1006/enrs.1999.3960

Cited by 134 publications

(40 citation statements)

References 110 publications

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“…Higher plant phytotoxicity bioassays, based on seed germination, root elongation, and early seedling growth measurements, have been conducted with various terrestrial and aquatic plant species (Wang 1991;Mohan and Hosetti 1999). Up to now, data on phytotoxicity studies have been considered in the toxicity evaluation of various media, such as commercial chemicals (Günter and Pestemer 1990), industrial and municipal effluents, hazardous wastes, leachates (Vasseur et al 1998;Wang and Williams 1988;Filidei et al 2003), and contaminated soils and sediments (Beltrami et al 1999;Valerio et al 2007).…”

Section: Introductionmentioning

confidence: 99%

The potential of the Phytotoxkit microbiotest for hazard evaluation of sediments in eutrophic freshwater ecosystems

Czerniawska-Kusza

Kusza

2010

Environ Monit Assess

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The applicability of the Phytotoxkit microbiotest for toxicity assessment of sediments in eutrophic freshwater ecosystems was evaluated. Sediments were collected from Turawa dam reservoir (southwestern Poland) which, for years, has been subjected to a marked nutrient enrichment and heavy metal contamination. The test plant species were exposed to whole sediments, solid phases of sediments, and pore waters. Phytotoxicity was estimated on the basis of seed germination and root elongation measurements, combined into an overall germination index (GI). For pore waters, the majority of GI values were not statistically different from the controls, which was consistent with chemical data. For solid phases and whole sediments, GI values showed diversified effects ranging from growth stimulation to growth inhibition. The results obtained vary depending on the plant species and the type of sediment samples. Generally, tests with solid phases of sediments showed phytostimulation, suggesting that higher amount of nutrients adsorbed on organic matterrich sediments might conceal the inhibitory impact of heavy metals (Cd, Cr, Cu, Mn, Ni, Pb, and I. Czerniawska-Kusza (B) · G. Kusza

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Section: Introductionmentioning

confidence: 99%

The potential of the Phytotoxkit microbiotest for hazard evaluation of sediments in eutrophic freshwater ecosystems

Czerniawska-Kusza

Kusza

2010

Environ Monit Assess

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“…Similarly, growth rates obtained using standardized growth endpoints are also different across standardized media used for toxicity assessment [26]. Whereas variable toxicological effects of algae exposed to a multitude of toxicants across a nutrient gradient are widespread throughout the literature [34][35][36][37][38][39][40], the potential for nutrient-toxicant interaction for higher plants, particularly Lemna, has received comparatively less attention and has focused on metals [41][42][43]. Others have recognized this paucity of data and identified the need to understand potential interactive effects between nutrients and toxicant exposure to aquatic vascular plants [44].…”

Section: Introductionmentioning

confidence: 99%

Influence of nitrogen and phosphorus concentrations and ratios on Lemna gibba growth responses to triclosan in laboratory and stream mesocosm experiments

Fulton

Brain

Usenko

et al. 2009

Enviro Toxic and Chemistry

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Abstract-The effects of co-occurring nutrient and contaminant stressors are very likely to interact in aquatic systems, particularly at the level of primary producers. Site-specific nitrogen (N) and phosphorus (P) concentrations are often much lower and differ in relative availability than those used in nutrient-saturated laboratory assays for aquatic plants, which can introduce uncertainty in prospective ecological hazard and risk assessments. Because triclosan, an antimicrobial agent included in personal care products, potentially presents high relative risk among antimicrobial agents to aquatic plants and algae, we performed laboratory experiments with the model aquatic macrophyte Lemna gibba across a gradient of environmentally relevant N:P levels with and without triclosan coexposure. Frond numbers (7 d) were significantly higher in N:P treatments of 16 and 23 but were lower in N:P of 937 and 2,500 treatments relative to standardized control media (N:P 5 3). When triclosan co-exposure occurred at high nutrient concentrations, frond number median effective concentration values at N:P 0.75, 3, and 16 were more than twofold lower than triclosan median effective concentration values in low nutrient media N:P ratios. However, a triclosan median effective concentration for frond number was twofold lower at N:P of 2,500 than at other N:P ratios in low concentration media. Influences of P enrichment on triclosan toxicity to L. gibba were further explored during a 14-d outdoor experimental stream mesocosm study. Effects of 2.6 and 20.8 mg L 21 triclosan on L. gibba growth rates were more pronounced with increasing P treatment levels, which was generally consistent with our laboratory observations. Findings from these laboratory and field studies indicate that site-specific nutrient concentrations and ratios should be considered during assessments of primary producer responses to chemical stressors.

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“…Smrchek and Zeeman 1998); however, information obtained from such tests is based on the results for a few freshwater green algae that are easy to manipulate in culture (Mohan and Hosetti 1999). Although toxicity tests with isolated species can provide useful indications for environmental risk assessments of test compounds, they cannot predict changes at different organizational levels in natural communities (Berard et al 2002).…”

Section: Introductionmentioning

confidence: 99%

The effects of copper and zinc on biomass and taxonomic composition of algal periphyton communities from the River Gharasou, Western Iran

Atazadeh¹,

Kelly²,

Sharifi

et al. 2009

Oceanological and Hydrobiological Studies

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Indoor artificial streams were used to evaluate the short-term (24 day) influence of copper and zinc, individually and in combination, on the biomass and taxonomic composition of algal periphyton communities. The effects of Cu (50 µg l -1 ) and Zn (1 mg l -1 ) were assessed using measurements of biomass, ash-free dry mass (AFDM), chlorophyll-a concentration, taxonomic composition and biovolume. In artificial streams with Cu, Zn and Cu+Zn, there were significant (p < 0.05) reductions of chlorophyll-a concentrations, dry mass and AFDM, and also changes in * Corresponding author: islam.atazadeh@gmail.com the species diversity and relative abundances of periphyton species. In artificial streams containing both Cu and Zn the taxonomic composition shifted from a Cyanophyceaen dominated community to one consisting mainly of Chlorophyceae, whilst the relative contribution of Bacillariophyceae was not significantly altered.

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Aquatic Plants for Toxicity Assessment

Cited by 134 publications

References 110 publications

The potential of the Phytotoxkit microbiotest for hazard evaluation of sediments in eutrophic freshwater ecosystems

The potential of the Phytotoxkit microbiotest for hazard evaluation of sediments in eutrophic freshwater ecosystems

Influence of nitrogen and phosphorus concentrations and ratios on Lemna gibba growth responses to triclosan in laboratory and stream mesocosm experiments

The effects of copper and zinc on biomass and taxonomic composition of algal periphyton communities from the River Gharasou, Western Iran

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