Assessment of the rate of accumulation of the transuranium element americium-241 by the aquatic plant Elodea canadensis

The mutual effect of two heavy metals – toxic (Cd2+) and essential (Mn2+) on the aquatic plant was studied in model systems. Experiments were performed on submerged aquatic macrophyte – Elodea canadensis Michx. Elodea shoots (10–15 cm in length) were incubated for 5 days in a nutrient solution with CdSO4 and MnSO4 at the concentration of 100 μmoles (added separate and combined). The following characteristics were analyzed in Elodea leaves: the accumulation of Cd2+ and Mn2+; the content of photosynthetic pigments and its ratio; the level of chlorophyll fluorescence (quantum efficiency, Fv/Fm). Incubation of Elodea plants with Cd2+ increased its content by more than 1000 times compared to the control. Incubation with Mn2+ increased its content by 10 times. The combined effect of cadmium and manganese reduced Cd2+ accumulation in the Elodea leaves almost in 2 times in comparison with its separate action, while the Mn2+ accumulation was decreased only by 40 %. Under the cadmium action the content of all photosynthetic pigments was decreased, while by the manganese action – only chlorophylls were reduced. It was shown that Mn2+ mitigated Cd2+ toxicity. The content of chlorophyll a, carotenoids and quantum efficiency (Fv/Fm) was decreased to the lesser degree than under the separate cadmium action. Probably this is caused by the inhibition of its uptake in the presence of manganese.

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Crystal Violet Dye Removal from Aqueous Solutions Using Elodea Canadensis as Biofilter

Revista de Chimie ◽

10.37358/rc.17.10.5869 ◽

2017 ◽

Vol 68 (10) ◽

pp. 2270-275

Author(s):

Anamaria Torok ◽

Boldizsar Nagy ◽

Szende Tonk ◽

Erzsebet Buta ◽

Robert Szep ◽

...

Keyword(s):

Crystal Violet ◽

Stress Responses ◽

Active Sites ◽

Aquatic Plant ◽

Freundlich Isotherm ◽

Elodea Canadensis ◽

Second Order ◽

Order Kinetic ◽

Operational Parameters ◽

Crystal Violet Dye

The phytoremediation of Crystal violet dye was developed using the aquatic plant Elodea canadensis as biofilter. We analyzed the role of functional groups in phytoremediation by aquatic plants using the Fourier transform infrared spectroscopy (FTIR). The aquatic plant�s abiotic stress responses were evaluated under exposure of 20 - 90 mg/L initial dye concentration, where a significant decrease of the photosynthetic pigments content suggests the plant�s biosynthesis deregulation at higher concentrations. We determined the effect of operational parameters such as contact time, plant quantity initial concentration, initial pH and temperature on the removal efficiency. Data were analysed using the kinetic (pseudo-first- and second-order) and isotherm (Langmuir, Freundlich and Dubinin-Radushkevich) models. Our results show that the phytoremediation process follows the pseudo-second-order kinetic model, meaning that it takes places as chemisorption. The Crystal violet uptake was successfully described using the Freundlich isotherm model as a multilayer adsorption with heterogeneous energetic distribution of active sites.

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Molecular distribution and toxicity assessment of yttrium in Elodea canadensis

Marine and Freshwater Research ◽

10.1071/mf17142 ◽

2018 ◽

Vol 69 (5) ◽

pp. 690

Author(s):

Han Qiu ◽

Miao Zhang ◽

Dawei Zou ◽

Siyuan Song ◽

Yun Wan ◽

...

Keyword(s):

Photosynthetic Pigments ◽

Aquatic Plant ◽

Leaf Tissue ◽

Aquatic Organisms ◽

Toxicity Assessment ◽

Mineral Nutrients ◽

Elodea Canadensis ◽

Oxygen Species ◽

Negative Effects ◽

Tissue Changes

Aquatic plants are known to accumulate and bioconcentrate metals. In the present study, Elodea canadensis was subjected to different concentrations of yttrium (Y), ranging from 0 to 200μM, for 7 days and analysed for subcellular distribution and molecular localisation of Y, accumulation of mineral nutrients in leaf tissue, changes in photosynthetic pigments, oxidative stress and leaf and organelle ultrastructure. Leaf fractionation by differential centrifugation indicated that 68–76% of Y was accumulated in the cell wall, with higher levels of accumulation in cellulose and pectin than in other biomacromolecules. At all Y concentrations tested, Ca, Mg and Mn levels decreased in E. canadensis, whereas P levels increased; Fe and K levels increased initially and then declined. There was a marked concentration-dependent reduction in photosynthetic pigments following exposure to Y. Responses of components of the antioxidant system to Y treatment varied, whereas there were marked increases in reactive oxygen species and malondialdehyde at all Y concentrations tested. In addition, morphological symptoms of aging, such as chlorosis and damage to chloroplasts and mitochondria, were induced even by the lowest Y concentration. The results reveal that exogenous Y is widely available to this aquatic plant, which may have negative effects on aquatic organisms.

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Predicting distribution patterns and recent northward range shift of an invasive aquatic plant: Elodea canadensis in Europe

BIORISK – Biodiversity and Ecosystem Risk Assessment ◽

10.3897/biorisk.2.4 ◽

2009 ◽

Vol 2 ◽

pp. 1-32 ◽

Cited By ~ 16

Author(s):

Risto Heikkinen ◽

Niko Leikola ◽

Stefan Fronzek ◽

Raino Lampinen ◽

Heikki Toivonen

Keyword(s):

Aquatic Plant ◽

Distribution Patterns ◽

Elodea Canadensis ◽

Range Shift ◽

Invasive Aquatic Plant

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New data on the effect of ionizing radiation on the growth of the aquatic plant Elodea canadensis in the laboratory

Doklady Biological Sciences ◽

10.1134/s0012496617040019 ◽

2017 ◽

Vol 475 (1) ◽

pp. 157-160 ◽

Cited By ~ 4

Author(s):

A. Ya. Bolsunovsky ◽

D. V. Dementyev ◽

E. A. Trofimova ◽

T. A. Zotina

Keyword(s):

Ionizing Radiation ◽

Aquatic Plant ◽

Elodea Canadensis

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The Estimation of Toxicity of Heavy Metals for Aquatic Plant Elodea Canadensis

Journal of Siberian Federal University Biology ◽

10.17516/1997-1389-0242 ◽

2009 ◽

Vol 2 (2) ◽

pp. 226-236 ◽

Cited By ~ 1

Author(s):

Zotina Tatiana A. ◽

◽

Gaevsky Nicolai A. ◽

Radionova Elena A. ◽

◽

...

Keyword(s):

Heavy Metals ◽

Aquatic Plant ◽

Elodea Canadensis

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Elodea canadensis (Canadian pondweed).

10.1079/isc.20759.20203483396 ◽

2020 ◽

Author(s):

Manuel Angel Duenas-Lopez ◽

Ian Popay ◽

Hugh Dawson

Keyword(s):

Aquatic Plant ◽

Iucn Red List ◽

Red List ◽

Elodea Canadensis ◽

Native Plant ◽

Native Range ◽

Conservation Action ◽

Native Plant Species ◽

Submerged Aquatic Plant ◽

Port Infrastructure

Abstract Elodea canadensis is a submerged aquatic plant of slower flowing rivers, native to North America. It has been intentionally introduced into areas outside of its native range as an ornamental aquarium species. This species has a wide ecological tolerance and grows relatively fast. It is a perennial, overwintering in the deeper water, and reproducing asexually. Disturbance increases the dispersal of numerous propagules and the vigorous re-growth is enhanced through changes in availability of nutrients. E. canadensis can form dense mats which can interfere with recreational activities, navigation and port infrastructure. In addition to this, the dense mats outcompete native plant species and therefore decrease the biodiversity in an area. It also accentuates the accumulation of finer organic silts which enhances its growth further as nutrients are released. E. canadensis is considered invasive in Australia, New Zealand, Cuba, Alaska and the majority of European countries where it is present. Control is complicated and loss of fragments should be minimized to prevent further spread. It is included in the IUCN Red List, categorized as being of Least Concern. Thus, no conservation action is proposed or is necessary for this species.

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