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Water
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Environmental Feedbacks between Global Changes, Contaminants and Aquatic Plants
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Environmental Feedbacks between Global Changes, Contaminants and Aquatic Plants

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Water and Climate Change".

Deadline for manuscript submissions: closed (25 January 2024) | Viewed by 4246

Special Issue Editors

Prof. Dr. Philippe Juneau

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Guest Editor
Department of Biological Sciences, GRIL-EcotoQ-TOXEN, Ecotoxicology of Aquatic Microorganisms Laboratory, Université du Québec à Montréal, H3C 3P8, Succ. Centre-Ville, Montréal, QC, Canada
Interests: algae; cyanobacteria; plant physiology; environmental factors; pollution; ecotoxicology
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Marcelo Pedrosa Gomes

E-Mail Website
Guest Editor
Laboratório de Fisiologia de Plantas sob Estresse, Departamento de Botânica, Setor de Ciências Biológicas, Universidade Federal do Paraná, Avenida Coronel Francisco H. dos Santos, 100, Centro Politécnico Jardim das Américas, C.P. 19031, Curitiba 81531-980, PR, Brazil
Interests: plant physiology; ecotoxicology; emerging contaminants; harmful algae; antibiotics; pesticides; phytoremediation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

After industrialization, anthropic activities have accentuated global changes, leading to increases in temperature, changes in light quality and intensity, more frequent droughts, as well as increased salinization and contamination of aquatic systems. These novel conditions have direct impacts on water environments affecting their services and creating constraints to the biota. Although isolated effects of temperature, light, and contaminants on aquatic organisms have been studied, their integrative effects are far to be understood. Aquatic plants play important roles for the global environment. In addition to being the basis of the aquatic trophic chain, phytoplankton are essential for CO2 fixation and O2 production, but certain species may also produce toxins that are harmful for other organisms. Similarly, hydrophytes provide a habitat for a wide variety of aquatic organisms and, likewise, influence their abundance and diversity, in addition to participating in the removal of water contaminants (such as personal care and pharmaceuticals products, cyanotoxins, metals, hydrocarbons, and pesticides). Therefore, the environmental feedbacks between global changes, contaminants and aquatic plants are highly actual.

Based on that, this Special Issue aims to gather knowledge on environmental feedbacks between global changes and/or contaminants on the biology (molecular, morphophysiological, and biogeochemical responses) of aquatic plants (phytoplankton and hydrophytes).

This Special Issue includes, but is not limited to, the following aspects:

  • Aquatic plant responses to isolated and/or integrative effects of global changes and contaminants;
  • Plant`s tolerance mechanisms to global changes and contaminants;
  • Ecological prospection and modeling of the effects of global changes on aquatic plants;
  • Techniques to control contaminants and/or microorganisms (pathogens, cyanobacteria, and antimicrobial resistant microorganisms).

All article types are welcome, with an emphasis on original research papers, opinions, perspectives, hypotheses, reviews and mini-reviews.

Prof. Dr. Philippe Juneau
Prof. Dr. Marcelo Pedrosa Gomes
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Water is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • temperature
  • light
  • drought
  • ecology
  • abiotic stresses
  • xenobiotics

Published Papers (3 papers)

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Research

13 pages, 1666 KiB  
Article
Enhancing Biocontrol of Harmful Algae Blooms: Seasonal Variation in Allelopathic Capacity of Myriophyllum aquaticum
by Rafael Shinji Akiyama Kitamura, Ana Roberta Soares da Silva, Thomaz Aurelio Pagioro and Lúcia Regina Rocha Martins
Water 2023, 15(13), 2344; https://doi.org/10.3390/w15132344 - 24 Jun 2023
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Abstract
Myriophyllum aquaticum has shown potential allelopathic effects for the biocontrol of cyanobacteria and cyanotoxins. However, the composition of allelochemicals and their biological effects may be influenced by seasonal changes. In this study, we investigated the impact of aqueous extracts of M. aquaticum collected [...] Read more.
Myriophyllum aquaticum has shown potential allelopathic effects for the biocontrol of cyanobacteria and cyanotoxins. However, the composition of allelochemicals and their biological effects may be influenced by seasonal changes. In this study, we investigated the impact of aqueous extracts of M. aquaticum collected in different seasons on the growth of Microcystis aeruginosa and the concentration of microcystin-LR. Plant samples were extracted using ultrasound cycles in aqueous solutions, and extracts at varying concentrations (0.1, 10, and 100 mg/L) and a control treatment were inoculated with M. aeruginosa, and cell growth was analyzed using a Neubauer chamber. Photosynthetic pigment quantification was used to measure physiological effects and liquid chromatography was used to evaluate the microcystin-LR concentrations. The extracts of plants collected during autumn and winter exhibited higher inhibition of M. aeruginosa growth and a reduction in photosynthetic pigments compared to those collected during spring and summer. These results can be explained by the higher presence of phenolic compounds in the composition of extracts from autumn and winter. Microcystin-LR concentrations were decreased at 10 and 100 mg/L, with the highest efficiency observed in autumn, while spring showed lower efficiency. Our findings suggest that M. aquaticum extracts have inhibitory potential on M. aeruginosa, particularly during the autumn season, making them a promising nature-based solution for the biocontrol of harmful algal blooms. Full article
(This article belongs to the Special Issue Environmental Feedbacks between Global Changes, Contaminants and Aquatic Plants)
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14 pages, 764 KiB  
Article
The Use of Aquatic Macrophytes as a Nature-Based Solution to Prevent Ciprofloxacin Deleterious Effects on Microalgae
by Rafael Shinji Akiyama Kitamura, Tayna Fusaro, Raizza Zorman Marques, Julio Cesar Moreira Brito, Philippe Juneau and Marcelo Pedrosa Gomes
Water 2023, 15(12), 2143; https://doi.org/10.3390/w15122143 - 06 Jun 2023
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Abstract
Macrophytes have demonstrated excellent potential for the removal of pharmaceuticals from water. However, there is a lack of studies on the ecotoxicity of water after phytoremediation. In this study, we evaluated the toxicity of ciprofloxacin (Cipro) on the microalgae cells of Desmodesmus subspicatus [...] Read more.
Macrophytes have demonstrated excellent potential for the removal of pharmaceuticals from water. However, there is a lack of studies on the ecotoxicity of water after phytoremediation. In this study, we evaluated the toxicity of ciprofloxacin (Cipro) on the microalgae cells of Desmodesmus subspicatus exposed to water contaminated with Cipro and previously treated by Salvinia molesta or Egeria densa for 96 h. Microalgae exposed to Cipro (1, 10, and 100 µg L−1) in untreated water showed decreased rates of growth, respiration, and photosynthesis, and increased oxidative status (hydrogen peroxide concentration) and oxidative damages (lipid peroxidation). S. molesta exhibited a greater phytoremediation capacity than E. densa, reducing Cipro concentrations in water to below its toxic threshold to D. subspicatus (2.44 µg L−1), even when the antimicrobial was present at a concentration of 10 µg L−1. During the water treatment, neither S. molesta nor E. densa released compounds that had a toxic effect on D. subspicatus. This work demonstrates the novelty of using S. molesta and E. densa as a nature-based solution to remove Cipro from contaminated water. For the first time, we provide evidence of the ecotoxicological safety of this approach, as it prevents the deleterious effects of Cipro on photosynthetic microorganisms and helps to avoid the development of antimicrobial resistance. Full article
(This article belongs to the Special Issue Environmental Feedbacks between Global Changes, Contaminants and Aquatic Plants)
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16 pages, 4915 KiB  
Article
Synergistic Removal of Ciprofloxacin and Sulfamethoxazole by Lemna minor and Salvinia molesta in Mixed Culture: Implications for Phytoremediation of Antibiotic-Contaminated Water
by Leticia Yoshie Kochi, Rafael Shinji Akiyama Kitamura, Camila Silva Rocha, Julio Cesar Moreira Brito, Philippe Juneau and Marcelo Pedrosa Gomes
Water 2023, 15(10), 1899; https://doi.org/10.3390/w15101899 - 17 May 2023
Viewed by 1256
Abstract
Aquatic macrophytes have been used for the removal of antibiotics from contaminated water. Here, we have studied the capacity of Lemna minor and Salvinia molesta to reclaim ciprofloxacin (1.5 µg Cipro L−1) and/or sulfamethoxazole (0.3 µg Sulfa L−1) from [...] Read more.
Aquatic macrophytes have been used for the removal of antibiotics from contaminated water. Here, we have studied the capacity of Lemna minor and Salvinia molesta to reclaim ciprofloxacin (1.5 µg Cipro L−1) and/or sulfamethoxazole (0.3 µg Sulfa L−1) from artificially contaminated waters when plants were exposed in monoculture (L. minor or S. molesta) or in mixed culture (L. minor + S. molesta). Neither Cipro nor Sulfa alone induced negative effects on plants. As shown by the Abbot modelling, Cipro and Sulfa displayed antagonistic effects on plants. In both species, increased H2O2 concentrations and antioxidant enzyme activities were observed in plants when grown together. Although the antibiotics showed natural degradation, their concentration in water from treatments with plants was significantly lower, indicating the ability of the plants to uptake the compounds. When in co-culture, greater growth rates were observed for both plant species, which resulted in greater Cipro and Sulfa removal in the mixed system when compared with those with plants in monoculture. Both plants showed tolerance to the studied concentrations of antibiotics, with greater antibiotic uptake being reported for S. molesta. Although at the tested concentrations the antibiotics did not induce negative effects on plants, exposure to Cipro changed the relative yield of S. molesta, which may result in effects on community structure. The use of both L. minor and S. molesta in artificial wetlands may increase the phytoremediation capacity of systems. Full article
(This article belongs to the Special Issue Environmental Feedbacks between Global Changes, Contaminants and Aquatic Plants)
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