Functional Response (FR) and Relative Growth Rate (RGR) Do Not Show the Known Invasiveness of Lemna minuta (Kunth)

Echelpoel, Wout Van; Boets, Pieter; Goethals, Peter

doi:10.1371/journal.pone.0166132

Cited by 17 publications

(12 citation statements)

References 54 publications

(86 reference statements)

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“…The capability of plants to grow in the presence of a toxic substance is described using tolerance index (Ti). Plants are considered tolerant if their tolerance index (Ti) is higher than 0.6 [23][24]26]. In our experiments, L. minor retained a Ti of more than 0.7 and an unchanged morphology at all tested phenol concentrations, which implies that this plant is indeed a promising bioremediation agent.…”

Section: Phenol -Removal Capacities Of Aseptic and Non-aseptic L Minormentioning

confidence: 61%

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Assessment of in vitro Multiplication of Lemna minor in the Presence of Phenol: Plant/Bacteria System for Potential Bioremediation – Part I

Radulović

Petrić

Raspor

et al. 2018

Pol. J. Environ. Stud.

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The aim of this work was to examine the multiplication of the common duckweed (Lemna minor), an aquatic plant species widespread in European stagnant waters, in two different media (Murashige -Skoog and Hoagland) with and without phenol supplementation. In order to quantify plant multiplication we have used relative growth rate and tolerance indices on both tested media and at five phenol concentrations (10, 15, 20, 30 and 100 mg/L). Furthermore, we examined the possibility of phenol removal from aqueous media containing different phenol concentrations, by using plant/bacteria system consisting of the duckweed and its naturally occurring microbial populations. After 7 days, number of newly formed fronds was approximately four times higher than at the beginning of the experiment on both tested media. The most important result in this study was removal of 70% of phenol from the highest initial concentration of 100 mg/L, in mixed cultures of duckweed and bacteria. By comparison, aseptic duckweed cultures removed approximately 50% of phenol at the same initial concentration. Our duckweed specimen showed a fast reproduction rate, high tolerance to phenol and a possible cooperation with rhizosphere-associated bacteria. All of these traits can be ultimately utilized for bioremediation purposes.

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Section: Phenol -Removal Capacities Of Aseptic and Non-aseptic L Minormentioning

confidence: 61%

“……where W 1 , T 1 , and W 2 , T 2 are initial and final dry weights and times for each treatment, respectively [23]. Tolerance index (Ti) was calculated according to (Eq.…”

Section: Effect Of Media Composition On In Vitro Growth Of L Minormentioning

confidence: 99%

Assessment of in vitro Multiplication of Lemna minor in the Presence of Phenol: Plant/Bacteria System for Potential Bioremediation – Part I

Radulović

Petrić

Raspor

et al. 2018

Pol. J. Environ. Stud.

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“…Elodea biomass increase or growth rate (GR) was estimated following Van Echelpoel, Boets, and Goethals ():

GR = \frac{()(, f WW - i WW)}{t}

where f WW = final wet weight (g), i WW = initial wet weight and t = time interval.…”

Section: Methodsmentioning

confidence: 99%

Friends of mine: An invasive freshwater mussel facilitates growth of invasive macrophytes and mediates their competitive interactions

et al. 2020

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Increasing rates of invasions in ecosystems worldwide necessitate experiments todetermine the role of biotic interactions in the success and impact of multiple alien species. Here, we examined competitive and facilitative interactions among various combinations of three widespread and often co-occurring invaders: the zebra mussel Dreissena polymorpha, and the macrophytes Elodea canadensis and Elodea nuttallii.2. Using a mesocosm-based, factorial experimental design, we assessed the effect of interspecific competition on macrophyte growth rates in the absence and presence at varying biomass of D. polymorpha.3. Growth rates (wet g/day) of E. canadensis and E. nuttallii were similar when grown in isolation. When grown together, in the absence of D. polymorpha, E. canadensis growth was not significantly reduced in the presence of E. nuttallii and vice versa. In the presence of D. polymorpha (26.0 ± 1 mm), monocultural growth of E. canadensis was largely unaffected, while E. nuttallii growth was strongly enhanced. Low (2.64 g) and medium (3.96 g) mussel biomass led to negative interspecific effects between E. canadensis and E. nuttallii; at high (5.28 g) mussel biomass, the effect of interspecific competition was negated. Overall, D. polymorpha alleviated competitive interactions between the two inva-sive macrophytes when all three species co-occurred, and substantially enhanced growth of E. nuttallii with increasing mussel biomass, thereby suggesting a possible influence on the relative dominance of these macrophytes in the field. Our study demonstrates how facilitations can cause shifts in dominance amongclosely related invaders. The consequences of such facilitations for the structure and function of communities remain to be explored generally. K E Y W O R D Sbiotic interactions, biotic resistance, facilitation, interspecific competition, invasional meltdown, mutualism edge support from NSERC Canada. We particularly thank Dr Patrick

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“…treatment plant for remediation of municipal effluents [198] and combination of two or more plant increased the effectiveness of removal [199][200][201].…”

Section: Phytoremediation Of Organic Pollutant In Watermentioning

confidence: 99%

Phytoremediation of Polluted Waterbodies with Aquatic plants: Recent Progress on Heavy Metal and Organic Pollutants

Christian¹,

Beniah²

2019

Preprint

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Heavy metals and organic pollutants are ubiquitous environmental pollutants affecting the quality of soil, water and air. Over the past 5 decades, many strategies have been developed for the remediation of polluted water. Strategies involving aquatic plant use are preferable to conventional methods. In this study, an attempt was made to provide a brief review on recent progresses in research and practical applications of phytoremediation for water resources with the following objectives: (1) to discuss the toxicity of toxic chemicals pollution in water to plant, animals and human health (2) to summarise the physicochemical factors affecting removal of toxic chemicals such as heavy metals and organic contaminants in aqueous solutions by aquatic plants; (3) to summarise and compare the removal rates of heavy metals and organic contaminants in aqueous solutions by diverse aquatic plants; and (4) to summarise chemometric models for testing aquatic plant performance. More than 20 aquatic plants specie have been used extensively while duckweed (L. minor), water hyacinth (Eichhornia crassipes), water lettuce (P. stratiotes) are the most common. Overall, chemometrics for performance assessment reported include: Growth rate (GR), Growth rate inhibition (% Inhibition), Metal uptake (MU), translocation/transfer factor (TF), bioconcentration factor (BCF), Percent metal uptake (% MU), Removal capacity (RC) and Tolerance index (TI) while absorption rate have been studied using the sorption kinetics and isotherms models such as pseudo-first-order (PFO), pseudo-second-order (PSO), Freundlich, Langmuir and Temkin. Using modeling and interpretation of adsorption isotherms for performance assessment is particularly good and increases level of accuracy obtained from adsorption processes of contaminant on plant. Conclusion was drawn by highlighting the gap in knowledge and suggesting key future areas of research for scientists and policymakers.

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Functional Response (FR) and Relative Growth Rate (RGR) Do Not Show the Known Invasiveness of Lemna minuta (Kunth)

Cited by 17 publications

References 54 publications

Assessment of in vitro Multiplication of Lemna minor in the Presence of Phenol: Plant/Bacteria System for Potential Bioremediation – Part I

Assessment of in vitro Multiplication of Lemna minor in the Presence of Phenol: Plant/Bacteria System for Potential Bioremediation – Part I

Friends of mine: An invasive freshwater mussel facilitates growth of invasive macrophytes and mediates their competitive interactions

Phytoremediation of Polluted Waterbodies with Aquatic plants: Recent Progress on Heavy Metal and Organic Pollutants

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