Article
Biology
Artem Ermakov, Natalia Kudykina, Arina Bykova, Ulyana Tkacheva
Summary: The study investigates the effect of two glucocorticoid hormones, hydrocortisone and methylprednisolone, on the regeneration activity of Girardia tigrina planarian tissues. The results suggest that both hormones can either stimulate or inhibit the recovery rate of the regenerating tissue, depending on the hormone, its concentration, and the regenerating body part. This suggests that exogenous glucocorticoids can influence endogenous hormone-dependent regeneration mechanisms, including hormone-receptor interaction.
Article
Engineering, Environmental
Aline S. P. Dornelas, Renato A. Sarmento, Althieris S. Saraiva, Rone S. Barbosa, Mayane M. Vieira, Carlos Gravato, Amadeu M. V. M. Soares
Summary: Microbial insecticides have negative impacts on planarians, affecting their regeneration, locomotion, feeding, and sexual reproduction. When combined with increasing salinities, the harmful effects on planarians and their progeny are exacerbated, indicating an inadequate response to immune and osmoregulation processes.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Biodiversity Conservation
Eloisa Borges dos Reis, Fernanda S. Farnese, Marilene S. Oliveira, Andreia C. M. Rodrigues, Aline S. P. Dornelas, Renato A. Sarmento, Joao C. P. de Souza, Erika C. Resende, Althieris S. Saraiva
Summary: This study evaluated the sublethal concentrations of a Fipronil-based insecticide on planarians and found that chronic exposure to the insecticide resulted in significant decreases in locomotor velocity, regeneration of auricles and photoreceptors, and reproduction. These findings highlight the potential detrimental effects of pyrazole insecticides on non-target aquatic invertebrates and emphasize the need for further investigation on complementary parameters to accurately assess the toxicity of commercial pesticides in freshwater systems.
Article
Environmental Sciences
Aline Silvestre Pereira Dornelas, Joel Santiago de Jesus Ferreira, Laila Cristina Rezende Silva, Althieris de Souza Saraiva, Grasiele Soares Cavallini, Carlos Alexandre Sarabando Gravato, Amadeu Mortagua Velho da Maia Soares, Renato Almeida Sarmento
Summary: This study assessed the toxicity of the fungicide difenoconazole on freshwater planarians. The results showed that sublethal concentrations of the fungicide led to decreased locomotion, delayed regeneration, and impaired sexual reproduction in the planarians. The study highlights the importance of using reproductive, physiological, and behavioral parameters to assess the impact of chemicals on freshwater organisms, and provides valuable information for the development of ecotoxicological tools.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Food Science & Technology
Regina Orso, Itamar Luis Goncalves, Edivania Navarini Bampi, Bruna Maria Saorin Puton, Luiz Ubiratan Hepp, Nessana Dartora, Silvane Souza Roman, Alice Teresa Valduga
Summary: The polysaccharide fraction from yerba mate shows potential in improving the regeneration of planarian segments, but may cause toxicity at high concentrations leading to organism death.
Article
Genetics & Heredity
Xiu-Zhen Cheng, Dan Jin, Li-Li Duan, Wen-Song Xu, Hong-Chun Pan
Summary: In this study, the complete mitochondrial genome of Girardia tigrina was determined using next-generation sequencing, revealing a close relationship with the genus Dugesia in the Tricladida clade. The absence of ATP8 gene in the mitogenome of G. tigrina was also observed, similar to some other flatworms.
MITOCHONDRIAL DNA PART B-RESOURCES
(2021)
Article
Environmental Sciences
Fatima C. P. Simao, Carlos Gravato, Ana Luisa Machado, Amadeu M. V. M. Soares, Joao L. T. Pestana
Summary: The study revealed that exposure to polycyclic aromatic hydrocarbons impaired the reproductive output of planarians and led to behavioral anomalies in newborns. The defects in newborns raised concerns about the long-term consequences of these compounds for natural planarian populations.
Article
Environmental Sciences
Qian Zeng, Yu Wang, Feixiang Zan, Samir Kumar Khanal, Tianwei Hao
Summary: The research found that biogenic sulfide achieved decolorization of azo dye by directly cleaving azo bonds, with the decolorization efficiency increased up to 3-fold by adding an external carbon source or elevating the initial azo dye concentration. Biogenic sulfide plays a vital role in azo dye decolorization, offering a new possibility for treating dye-laden wastewater.
Article
Biodiversity Conservation
Youness Mabrouki, Abdelkhaleq Fouzi Taybi, Miquel Vila-Farre
Summary: This article reports the first record of G. tigrina sensu lato in the entire African continent, specifically in Morocco at Oued Fes. Although only one locality has been sampled, ongoing investigations may reveal more occurrences of the species in the country and the rest of the continent.
BIOINVASIONS RECORDS
(2023)
Article
Engineering, Environmental
Deepshikha Pandey, Achlesh Daverey, Kasturi Dutta, Kusum Arunachalam
Summary: Textile industries produce wastewater with harmful azo dyes that are known to be carcinogenic and mutagenic. This study evaluates the potential use of enzyme immobilized biochar for removing azo dyes from real and simulated textile effluents. The results show that the enzyme immobilized system can achieve high removal efficiency for individual azo dyes in the simulated effluent and for one dye peak in the real effluent. The presence of metabolite in the real effluent indicates the degradation of the dye. Therefore, enzyme immobilized biochar system can be used for simultaneous adsorption and degradation of toxic azo dyes from real effluents.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Analytical
Carrie Cockerham, Ashton Caruthers, Jeremy McCloud, Laura M. Fortner, Sungmin Youn, Sean P. McBride
Summary: Challenges exist in wastewater treatment of dyes from the textiles industry. A study shows that functionalized membranes can effectively remove dyes and ions with high rejection rates.
Article
Environmental Sciences
Leena Merlin Biju, V Pooshana, P. Senthil Kumar, K. Veena Gayathri, Sabah Ansar, Saravanan Govindaraju
Summary: This study examined the removal of mixed azo dyes and Cr(VI) metal in synthetic textile wastewater using haloalkaliphilic bacterial strains in a Moving Bed Biofilm Reactor. The results showed efficient decolorization of dyes and degradation of the metal, even at higher concentrations, by the eco-friendly bacterial consortium. Molecular and morphological characterization of the bacterial strains, along with analysis of metabolites, supported the findings of hazardous pollutant degradation and simultaneous dye decolorization.
Article
Chemistry, Applied
M. Rajeswari, K. N. Bhoomika, Hifza Ruksar, R. Naveen, S. R. Vidyadhara, Nagashree N. Rao, Ashwani Sharma, S. M. Deepak
Summary: This study developed a novel zinc oxide-chitosan nanocomposite filter for cost effective and continuous removal of textile azo dye. The experimental results showed that the developed nanosorbent had superior dye uptake capacity and removal efficiency.
TOPICS IN CATALYSIS
(2022)
Article
Biotechnology & Applied Microbiology
Roselin Neihsial, Ningombam Anjana Singha, Arvind Kumar Singh
Summary: This study reports the degradation activity of a bacterial consortium developed in the azo dye medium for multiple azo dye degradation, with most effective degradation observed under static condition. Analysis of the bacterial community revealed the presence of Proteobacteria, Bacteroidetes, and Firmicutes as dominant phyla. Genes predicted from metagenomic sequences were mapped onto the KEGG pathway to construct the Congo Red degradation pathway.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2022)
Article
Biotechnology & Applied Microbiology
S. P. Bera, S. K. Tank
Summary: This study isolated a strain of Pseudomonas from textile waste, identified it as Pseudomonas stutzeri, and optimized its ability to degrade Procion Red H-3B dye. The results showed that this strain has great potential for industrial applications in treating textile wastewater, highlighting the importance of bioremediation in creating a cleaner environment.
JOURNAL OF APPLIED MICROBIOLOGY
(2021)
