Inhibition of growth of Anabaena variabilis population by single and mixed steroid hormones

Szczukocki, Dominik; Krawczyk, Barbara; Skrzypek, Sławomira; Miękoś, Ewa; Gadzała‐Kopciuch, Renata

doi:10.1007/s10811-018-1589-9

Cited by 9 publications

(8 citation statements)

References 53 publications

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“…A similar phenomenon was observed in our study because low concentrations of E1, E3, EE2, and PRO stimulated the growth of M. aeruginosa. Previous studies have shown that hormones inhibited the growth of cyanobacteria Anabaena variabilis (Czarny et al 2019a). Similar to the present study, EE2 and PRO were the most toxic of all the tested hormones and the achieved 14-day EC 50 values were 48.59 and 82.95 mg L −1 .…”

Section: Discussionsupporting

confidence: 89%

“…The achieved 14-day EC 50 values for mixed hormones for A. variabilis, C. vulgaris, and S. armatus were 37. 00-89.46, 47.89-75.30, and 70.54-697.26 mg L −1 , respectively (Czarny et al 2019a, b). Comparing the results, it can be estimated that M. aeruginosa were less sensitive than A. variabilis and C. vulgaris, and more sensitive than S. armatus.…”

Section: Discussionmentioning

confidence: 85%

“…According to the literature, the toxic effects of single hormones on the growth of cyanobacteria have been tested, and the effects of mixtures have not been evaluated. The only information about the toxic effects of mixtures of hormones on microalgae can be found in the previous research which concerned the estimation of their effect on the cyanobacterium A. variabilis and the green algae C. vulgaris and Scenedesmus armatus (Czarny et al 2019a, b). The achieved 14-day EC 50 values for mixed hormones for A. variabilis, C. vulgaris, and S. armatus were 37.…”

Section: Discussionmentioning

confidence: 99%

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Toxicity of single steroid hormones and their mixtures toward the cyanobacterium Microcystis aeruginosa

2019

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Several compounds, such as hormones, are released uncontrolled into the aquatic environment, and some of these pollutants have an adverse effect on endocrine systems of humans and other organisms. However, there is insufficient information about the effect of natural and synthetic hormones on non-target organisms, such as cyanobacteria. Therefore, in this study, the adverse effects of hormones, singly and in combination, on Microcystis aeruginosa were explored for the first time. Chronic toxicity was evaluated based on biomass and chlorophyll a measurements during 14 days of exposure. Growth of cyanobacteria after exposure to 0.1-100 mg L −1 of hormones was inhibited in a concentration-dependent manner. In most cases, a low concentration of hormones (0.1-1 mg L −1) did not affect the growth of cyanobacteria, but a higher concentration (> 10 mg L −1) inhibited the growth. The obtained 14-day EC 50 values were 88.92-355.15 mg L −1. According to these values, the decreasing order of the toxicity of the eight hormones to tested cyanobacteria was 17-α-ethinylestradiol > progesterone > 17ß-estradiol > 5-pregnen-3βol-20-one > testosterone> estrone > levonorgestrel > estriol. Moreover, data show that mixed hormones were more toxic than single compounds and more than additive effect was observed. The achieved 14-day EC 50 values for mixed hormones were 56.66-166.83 mg L −1. Simultaneous presence of several hormones in the aquatic environment may lead to increased toxicity (more than additive effect) and cause serious ecological effects, more harmful than expected.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionmentioning

confidence: 85%

Section: Discussionmentioning

confidence: 99%

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Toxicity of single steroid hormones and their mixtures toward the cyanobacterium Microcystis aeruginosa

2019

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“…EE2 was reported to inhibit growth of different microalgal strains (Table 8, Table S2). EE2 caused 50% toxicity/inhibition of Pseudokirchneriella subcapitata / Raphidocelis subcapitata growth [103,176], Scenedesmus / Desmodesmus strains [84,103,176,177,178], Chlorella vulgaris growth [178] and Dunaliella salina growth [179], the diatom Navicula incerta ’s growth [180] and the cyanobacteria Microcystis aeruginosa [103] and Anabaena variabilis [181].…”

Section: Inhibitory Effect Of Pharmaceuticals and Personal Care Prmentioning

confidence: 99%

Effect of PHRs and PCPs on Microalgal Growth, Metabolism and Microalgae-Based Bioremediation Processes: A Review

Miazek

Brożek-Płuska

2019

IJMS

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In this review, the effect of pharmaceuticals (PHRs) and personal care products (PCPs) on microalgal growth and metabolism is reported. Concentrations of various PHRs and PCPs that cause inhibition and toxicity to growths of different microalgal strains are summarized and compared. The effect of PHRs and PCPs on microalgal metabolism (oxidative stress, enzyme activity, pigments, proteins, lipids, carbohydrates, toxins), as well as on the cellular morphology, is discussed. Literature data concerning the removal of PHRs and PCPs from wastewaters by living microalgal cultures, with the emphasis on microalgal growth, are gathered and discussed. The potential of simultaneously bioremediating PHRs/PCPs-containing wastewaters and cultivating microalgae for biomass production in a single process is considered. In the light of reviewed data, the feasibility of post-bioremediation microalgal biomass is discussed in terms of its contamination, biosafety and further usage for production of value-added biomolecules (pigments, lipids, proteins) and biomass as a whole.

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“…This bacterium is found in the aquatic environment and has been known as producing neurotoxin harmful to the ecosystem. [25] Using 1,4-benzoquinone (pBQ) as a redox mediator, and reduced graphene oxide (rGO)-coated indium tin oxide as an anode, we could achieve maximum photocurrent of 223 μA cm À 2 at 0.4 V (vs. Ag/AgCl) and Incident photon to current efficiency (IPCE) of 0.50 % with white light. From a complete cell constructed with a Pt/C air cathode, the maximum power density of 13 μW cm À 2 at a current density of 115 μA cm À 2 was achieved.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Photocurrent Generation From a Single‐Mediated Photo‐Bioelectrochemical Cell Using Wild‐Type Anabaena Variabilis Dispersed in Solution

2020

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There is a growing interest in photosynthetic microorganisms for converting solar energy to electricity aiming at practical application. Despite extensive research, existing methods are suffered from limited photocurrent. Here we report that appreciable photocurrent can be generated in a photobioelectrochemical cell (PBEC) where reduced graphene oxidecoated ITO electrode is used as an anode and wild type cyanobacterium Anabaena variabilis as photo-biocatalyst that oxidizes water by solar light. With A. variabilis dispersed in buffer and 1,4-benzoquinone as a redox mediator, our PBEC produced photocurrent of 223 μA cm À 2 at an applied voltage of 0.4 V vs. Ag/AgCl. Incident photon to current efficiencies of 0.50 % and 5.2 % were obtained with white and monochromatic light at 660 nm, respectively. A complete PBEC with Pt/C cathode produced P max of 13 μW cm À 2 at 115 μA cm À 2. Methodology in this study can be extended to cover other cyanobacteria, electrode materials, and mediators to further enhance photocurrent and power density. Our results demonstrate the possibility of utilizing cyanobacteria that are ubiquitous in the environment as alternative energy sources.

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Inhibition of growth of Anabaena variabilis population by single and mixed steroid hormones

Cited by 9 publications

References 53 publications

Toxicity of single steroid hormones and their mixtures toward the cyanobacterium Microcystis aeruginosa

Toxicity of single steroid hormones and their mixtures toward the cyanobacterium Microcystis aeruginosa

Effect of PHRs and PCPs on Microalgal Growth, Metabolism and Microalgae-Based Bioremediation Processes: A Review

Enhanced Photocurrent Generation From a Single‐Mediated Photo‐Bioelectrochemical Cell Using Wild‐Type Anabaena Variabilis Dispersed in Solution

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