Ciliates in ecotoxicological studies: A minireview

Vilas–Boas, Jéssica Andrade; Senra, Marcus Vinicius Xavier; Dias, Roberto Júnio Pedroso

doi:10.1590/s2179-975x6719

Cited by 12 publications

(3 citation statements)

References 89 publications

(98 reference statements)

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“…The selection of an appropriate answer pertaining to the issue of human interaction with organisms holds significant importance in establishing a dimension of protist literacy. The ongoing issue under investigation pertains to the emergence of industrially manufactured nanoparticles and their potential to induce environmental toxicity (Vilas-Boas et al, 2020). The study of ciliated protists has received significant attention from ecotoxicologists due to their crucial function in regulating microbial populations and mitigating the effects of environmental toxicity (Gomiero et al, 2013).…”

Section: Real Solutionmentioning

confidence: 99%

Protist literacy: A novel concept of protist learning in higher education

Hardianto,

Mahanal,

Susanto

et al. 2024

EURASIA J Math Sci Tech Ed

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Protist education in universities primarily focuses on acquiring knowledge about species classification within the protist. Protist literacy emerged as a theoretical framework exploring the interplay between humans and protists within daily existence. This systematic literature review (SLR) provides a comprehensive understanding of protist literacy and identifies several dimensions. This SLR utilized PRISMA diagram to execute the inclusion and exclusion methods. According to SLR results, the concept of protist literacy refers to the ability of university students to analyze, comprehend, and implement the knowledge of protists to solve everyday problems. Protist literacy consists of seven dimensions: conceptual knowledge, relation information, fact evaluation, real solution, argument identification, self-confidence, and scientific value. The results of the current study imply that protist literacy is a potential variable to be further explored in protist learning.

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Section: Real Solutionmentioning

confidence: 99%

Protist literacy: A novel concept of protist learning in higher education

Hardianto,

Mahanal,

Susanto

et al. 2024

EURASIA J Math Sci Tech Ed

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“…They play crucial role in shaping the microbial diversity in the aquatic ecosystems (Abraham et al 2019a). Therefore, ciliate diversity and abundance are being linked in several studies to study the environmental changes (Abraham et al 2019b;Jiang and Morin 2004;Maurya et al 2020;Xu et al 2014) and in monitoring the heavy metal pollution (Abraham et al 2017;Gutiérrez et al 2003;Somasundaram et al 2018Somasundaram et al , 2019Toteja et al 2017;Vilas-Boas et al 2020;Yeomans et al 1997).…”

Section: Introductionmentioning

confidence: 99%

Molecular characterization and transcriptional modulation of stress-responsive genes under heavy metal stress in freshwater ciliate, Euplotes aediculatus

et al. 2022

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The concentration of heavy metals in the environment is increasing predominantly due to anthropogenic activities such as mining and other industrial activities. Exposure to metals above a certain threshold level induces deleterious effects in the living organisms. To survive such harsh environment, microbes possess a range of tolerance mechanisms and express stress-responsive genes and/or antioxidant enzymes to detoxify the metal stress.Protozoans, especially ciliates, are highly sensitive to the environmental changes, thereby making them suitable model systems for ecotoxicological studies. Thus, in the present work, the effect of heavy metals such as cadmium and copper has been studied in the freshwater ciliate, Euplotes aediculatus. This study focuses on the activity of antioxidant enzymes namely catalase and glutathione peroxidase in E. aediculatus under the heavy metal stress. Also, the expression of stress-responsive genes; heat-shock protein 70 (hsp70) and catalase (cat), has been studied after metal exposure. It was observed that the enzyme activity and the expression of these genes increased with an increase in the metal concentration and with the duration of metal exposure. Besides, these genes have been characterized to understand their role in cell defense. These genes of fresh water ciliate, therefore, can be used as molecular biomarkers to evaluate heavy metal toxicity.

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“…The potential of zooplanktonic organisms as bioindicators in toxicity tests has been well referenced (Vilas-Boas et al, 2020;Gomiero et al, 2012;Gomiero et al, 2013;Mortimer et al, 2010;Qing-Hua et al, 2008). The main advantage of using them in ecotoxicological research is to show toxic effects at individual level and its subsequent impact on higher levels of biological organization, naturais e de atuar em tempo hábil (sistemas de alerta precoce) em eventos de contaminação de EPT, bem como o desenvolvimento de métodos de biomonitoramento sensíveis e rápidos para a detecção desses elementos no meio ambiente.…”

Section: Introductionunclassified

Acute toxicity of potentially toxic elements on ciliated protozoa from Lake Maracaibo (Venezuela)

et al. 2022

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Aim In this article the acute ecotoxicological effects of Cr(III), Cr(VI), Cd(II) and V(V) on ciliated protozoa isolated from Lake Maracaibo were evaluated, by estimating of the LC50 for an exposure time of 1-h and observations every 5 min. Methods Isolations and cultures of ciliated protozoa were made from surface water samples to then carry out toxicity essays under static and controlled conditions, identifying cell immobility (death) as the endpoint. Results The response of the ciliated protozoa made it possible to unequivocally determine the acute toxicity in presence of potentially toxic elements (PTE), with variable mortalities depending on the gender, the element tested and its concentration. The results obtained with Euplotes sp. indicate that protozoan is a sensitive biomonitor indicated for the biomonitoring of PTE contamination in Lake Maracaibo. Conclusions The use of shorter exposure periods offers opportunities to show early toxicity effects on natural populations and to act in a timely manner (early warning systems) in contamination events by PTEs, as well as the development of sensitive and rapid biomonitoring methods for detection of these elements in the environment.

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Ciliates in ecotoxicological studies: A minireview

Cited by 12 publications

References 89 publications

Protist literacy: A novel concept of protist learning in higher education

Protist literacy: A novel concept of protist learning in higher education

Molecular characterization and transcriptional modulation of stress-responsive genes under heavy metal stress in freshwater ciliate, Euplotes aediculatus

Acute toxicity of potentially toxic elements on ciliated protozoa from Lake Maracaibo (Venezuela)

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