Suitability of a green microalgal strain for wastewater bioremediation and biomass production

Fodorpataki, László; Keresztes, Zsolt Gyula; Bartha, Csaba; Marton, Attila; Barna, Szabolcs

doi:10.1016/j.copbio.2011.05.203

Cited by 3 publications

(4 citation statements)

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“…Our results suggest that the same water contaminants that disturb the organization of the light-harvesting complexes also impair the photochemical reactions on the acceptor side of PSII as revealed by the transitory maximal fluorescence (Fm) parameter. Similar decrements in Fm values were reported for plants exposed to prolonged heat stress, heavy metal toxicity, and herbicides that withdraw electrons from PSI [85,86]. The results concerning the Fv/Fo ratio suggest that these river sectors contain the highest quantities of contaminants (mainly organochlorinated pesticides at Câmpia Turzii and metals and monocyclic aromatic hydrocarbons at Baia de Arieş), which affect the capacity of plants to use light energy in photosynthesis.…”

Section: Chlorophyll Fluorescence Parameterssupporting

confidence: 70%

Impact of Arieş River Contaminants on Algae and Plants

Halmagyi,

Butiuc-Keul,

Keul

et al. 2023

Toxics

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The Arieş River (Western Romania) represents one of the most important affluents of the Mureş River, with great significance in the Mureş Tisza basin. The environmental quality of the Arieş basin is significantly affected by both historic mining activities and contemporary impacts. Thus, an evaluation of the effects of the main contaminants found in water (organochlorine pesticides—OCPs, monocyclic aromatic hydrocarbons—MAHs, polycyclic aromatic hydrocarbons—PAHs, and metals) on cyanobacteria and plants was performed. Among OCPs, hexachlorocyclohexane isomers, dichlorodiphenyltrichloroethane, and derivatives were detected in plants while admissible concentrations were detected in water. Among MAHs, high levels of benzene were detected both in water and in plants. The levels of PAHs exceeded the allowable values in all samples. Increased concentrations of metals in water were found only at Baia de Arieş, but in plants, all metal concentrations were high. The pH, nitrates, nitrites, and phosphates, as well as metals, pesticides, and aromatic hydrocarbons, influenced the physiological characteristics of algae, test plants, and aquatic plants exposed to various compounds dissolved in water. Considering that the Arieş River basin is the site of intense past mining activities, these data provide information about the impact on water quality as a consequence of pollution events.

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Section: Chlorophyll Fluorescence Parameterssupporting

confidence: 70%

Impact of Arieş River Contaminants on Algae and Plants

Halmagyi,

Butiuc-Keul,

Keul

et al. 2023

Toxics

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“…Usually, when natural compounds are used as priming agents (only at the beginning of the experimental period), they are applied in higher concentrations than those that exist in plants under normal growth conditions (Aranega-Bou et al, 2014). In studies performed during the last decade, it was demonstrated that externally administrated vitamin U, which is translocated through the aqueous solution of the xylem sap, enhances tolerance to environmental stress conditions, such as hypoxia, heavy metal toxicity and mosaic virus infection (Menegus et al, 2004;Fodorpataki et al, 2010, Ludmerszki et al, 2011. In maize seedlings, it protects chloroplast structure, reduces cell membrane damage and stimulates the phenylpropanoid pathway upon exposure to low temperature stress (Racz et al, 2008;Szego et al, 2009;Paldi et al, 2014).…”

Section: Biological Materials and Experimental Designmentioning

confidence: 99%

“…Percentage of germinated seeds was determined on the second, the fourth and the sixth days. S-methylmethionine (vitamin U) concentrations were chosen based on previous series of experiments (Fodorpataki et al, 2010).…”

Section: Biological Materials and Experimental Designmentioning

confidence: 99%

Priming with Vitamin U Enhances Cold Tolerance of Lettuce (Lactuca sativa L.)

Fodorpataki

Molnár

Tompa

et al. 2019

Not Bot Horti Agrobo

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Priming may be an efficient pre-treatment of plants in order to enhance their ability to cope with unfavourable growth conditions, and to improve defensive metabolism through elevated levels of protective substances which may also act as health-promoting agents upon human consumption. The aim of this work was to evaluate the beneficial influence of priming with the naturally occurring, but scarcely known vitamin U (S-methylmethionine) on cold stress tolerance of lettuce (the frequently grown ‘May King’ cultivar). Effects on germination, photosynthetic efficiency, as well as on health-promoting carotenoid and vitamin C contents were investigated. Photosynthetic capacity, strongly related to productivity, was evaluated with parameters of induced chlorophyll fluorescence and of leaf gas exchange through stomata, using plants grown in hydroponic cultures. Priming with vitamin U significantly compensated for the delaying effect of low temperature (5 °C) on seed germination, as well as for inhibition of light-converting photochemical reactions and of carbon dioxide assimilation by cold stress. Use of vitamin U to prime lettuce plantlets for low temperature stress resulted in an elevated content of carotenoid pigments and of vitamin C in leaves, which improve the quality of consumed lettuce with respect to the health-promoting capacity. This beneficial influence of vitamin U was not proportional with its concentration (2 mM had no stronger effects than 0.25 mM), so small amounts of this substance were sufficient for a sustained efficiency in promoting hardening against chilling temperatures. This is the first report on priming of lettuce for cold tolerance by using S-methylmethionine (vitamin U), with a possible application in improvement of crop quality and productivity. ********* In press - Online First. Article has been peer reviewed, accepted for publication and published online without pagination. It will receive pagination when the issue will be ready for publishing as a complete number (Volume 47, Issue 3, 2019). The article is searchable and citable by Digital Object Identifier (DOI). DOI link will become active after the article will be included in the complete issue. *********

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“…The results suggest that even if glufosinate is not a herbicide which inhibits photosynthesis, its influence on photorespiration and on the carbon assimilation in the Calvin cycle indirectly impairs organization and function of light-harvesting pigment-protein complexes. Accumulation of ammonium ions due to inhibition of glutamine synthase may also affect structure and permeability of thylakoid membranes where the light-harvesting antennae exist [8,9]. Ground chlorophyll fluorescence was also used to indicate and to evaluate the influence of other herbicides and water-pollutants on photosynthetic performance of several aquatic plants, but few chemical stress factors were found to significantly affect this parameter in a degree which is consistent with the severity of environmental stress or with the exposure time to water pollutants [6].…”

Section: Resultsmentioning

confidence: 99%

Comparative study on growth and photosynthetic pigment dynamics of two microalgae under the influence of water pollution with the herbicide glufosinate

Plugaru¹,

Fodorpataki²,

Orban³

et al. 2017

Studia UBB Chemia

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ABSTRACT. The aim of the study is to compare biochemical and physiological reactions of two related species of green microalgae (Scenedesmus acuminatus and Scenedesmus opoliensis), both considered suitable for bioindication and remediation of aquatic environments polluted with herbicides. Monoalgal axenic cultures were treated for 10 days under controlled conditions with different concentrations (from 0.1 μM to 100 µM) of glufosinate (a nonselective contact herbicide that inhibits glutamine synthase activity, thus disturbing photorespiration, inhibiting photosynthetic carbon assimilation, and generating ammonium excess in plant cells). S. opoliensis was found to be a better indicator of adverse effects of glufosinate than S. acuminatus. Changes in the ground chlorophyll fluorescence (reflecting light energy harvesting capacity), in cell division rate and in chlorophyll-a content may be early, costeffective and sensitive markers of herbicide impact on microalgal communities inhabiting polluted water. Our results bring new data concerning the need of selection among related test organisms based on differentiated tolerance, as well as concerning biochemical parameters suitable for evaluation of water pollution impact when organic xenobiotics accumulate in aquatic environments. Thus, the presented results may be applied in optimizing bioindication of water quality using microalgae, and in treatment of wastewater polluted due to agricultural practices.

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Suitability of a green microalgal strain for wastewater bioremediation and biomass production

Cited by 3 publications

References 0 publications

Impact of Arieş River Contaminants on Algae and Plants

Impact of Arieş River Contaminants on Algae and Plants

Priming with Vitamin U Enhances Cold Tolerance of Lettuce (Lactuca sativa L.)

Comparative study on growth and photosynthetic pigment dynamics of two microalgae under the influence of water pollution with the herbicide glufosinate

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