Review
Biochemistry & Molecular Biology
Olga V. V. Kolesnik, Tatiana V. V. Rozhko, Nadezhda S. S. Kudryasheva
Summary: Radioactive contaminants pose problems globally, particularly in marine ecosystems, and their ecological significance is expected to increase in the future. This review focuses on the bioeffects of various alpha and beta emitting radioisotopes (americium-241, uranium-235/238, thorium-232, and tritium) and gamma radiation, with a special emphasis on low-intensity exposures. Luminous marine bacteria are highlighted as representative organisms, and their bioluminescence intensity is widely used as a simple and sensitive bioassay parameter. The review discusses the relationship between bacterial luminescence response and exposure time and irradiation intensity, and also explores molecular intracellular processes under low-intensity radiation, including changes in enzymatic processes, consumption of NADH, the role of reactive oxygen species, and DNA damage repair. The results demonstrate the natural radioprotective function of humic substances.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Agriculture, Multidisciplinary
Jiao Shang, Yong-Sheng Yao, Lu-Lu Chen, Xiang-Zhen Zhu, Lin Niu, Xue-Ke Gao, Jun-Yu Luo, Ji-Chao Ji, Jin-Jie Cui
Summary: This study demonstrates that sublethal deltamethrin pesticide has a significant impact on the population dynamics and symbiotic bacterial community of cotton aphids, exhibiting intergenerational hormesis effects.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2021)
Article
Engineering, Environmental
Hengtao Xu, Li'ang Li, Youji Wang, Kecheng Qiu, Siyang Chen, Jiangning Zeng, Ruijuan Liu, Qikun Yang, Wei Huang
Summary: The study compared the effects of microplastics on microalgae from different habitats. The results showed that microplastics had a significant concentration effect on the growth of microalgae, inhibiting photosynthesis and activating the antioxidant system. The effects on freshwater microalgae were found to be more severe than on marine microalgae. This study provides reliable data for understanding the complex effects of microplastics on microalgae and comparing the differential effects among different microalgae.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Cindy D. Beyer, Sugina Thavalingam, Tatiana Guseva, Lisa Schardt, Ralf Zimmermann, Carsten Werner, Pascal Dietze, Julia Elisabeth Bandow, Nils Metzler-Nolte, Axel Rosenhahn
Summary: Zwitterionic peptides with histidine and glutamic acid, as well as lysine and glutamic acid, sequences were synthesized and tested for protein and marine organism resistance. A comparison revealed that peptides with lysine performed better against proteins and freshwater bacteria, while sequences containing histidine were more resistant to marine organisms. The influence of amino acid properties and external factors on coating resistance was discussed, providing insights for future biocompatible and sustainable fouling release coatings.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Environmental Sciences
Jason A. Coral, Samuel Heaps, Stephen P. Glaholt, Jonathan A. Karty, Stephen C. Jacobson, Joseph R. Shaw, Maria Bondesson
Summary: This study investigated the bimodal response of arsenic on zebrafish embryos and found distinct bimodal phenotypic effects. Exposure to arsenic at different concentrations led to varying physiological and morphological abnormalities in the embryos. Tests with dechorionated embryos supported the idea that the bimodal toxicity response was not caused by the chorion limiting arsenic availability.
ENVIRONMENTAL POLLUTION
(2021)
Article
Marine & Freshwater Biology
Mei-Qin Zhuo, Xiao Chen, Lu Gao, Hai-Ting Zhang, Qing-Ling Zhu, Jia-Lang Zheng, Yifan Liu
Summary: Short-term exposure to metals during the larvae phase has both positive and negative effects on offspring.
AQUATIC TOXICOLOGY
(2023)
Article
Agronomy
Aishwarya Ray, Basana Gowda Gadratagi, Neeraj Budhlakoti, Dhanendra Kumar Rana, Totan Adak, Guru Pirasanna Pandi Govindharaj, Naveenkumar Basavanagouda Patil, Annamalai Mahendiran, Prakash Chandra Rath
Summary: This study investigated the response of a widely acclaimed parasitoid to the insecticide imidacloprid. The results showed that different concentrations of the insecticide had different effects on the parasitoid, with positive effects observed at lower concentrations.
PEST MANAGEMENT SCIENCE
(2023)
Article
Entomology
Diogo P. Godinho, Cristina Branquinho, Sara Magalhaes
Summary: Some plants accumulate metals on their leaves as a defense against herbivorous arthropods, but the response of herbivores to metal accumulation is variable. In this study, we tested the variation in response to cadmium-accumulating tomato plants in two species of spider mites. We found a nonlinear, hormetic response in some populations, indicating that herbivores respond to metals and not to changes in leaf carbohydrates. This knowledge is important for understanding herbivore responses to metal-based plant defenses and pesticides.
JOURNAL OF PEST SCIENCE
(2023)
Review
Environmental Sciences
Matilde Vieira Sanches, Rosa Freitas, Matteo Oliva, Alessia Cuccaro, Gianfranca Monni, Andrea Mezzetta, Lorenzo Guazzelli, Carlo Pretti
Summary: The potential release of ionic liquids into aquatic systems has led to concerns about their ecotoxicological effects on aquatic microorganisms and invertebrate species. This review examines 103 studies on ionic liquids and their toxicity to aquatic organisms, focusing on the factors influencing their toxicity. Freshwater species were studied more frequently than marine species, with algal species being the most commonly assessed. The combination of imidazolium cations with long alkyl-chain anions was found to be the most toxic.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Biochemical Research Methods
Lina J. Bird, Dagmar H. Leary, Judson Hervey, Jaimee Compton, Daniel Phillips, Leonard M. Tender, Christopher A. Voigt, Sarah M. Glaven
Summary: Engineered electroactive bacteria have potential applications ranging from sensing to biosynthesis. In this study, the researchers demonstrated the functional expression of electron transfer modules in a marine bacterium, M. atlanticus, during biofilm growth in artificial seawater. The addition of menaquinone was necessary for significant current production, and the electron transfer was reversible, indicating controllable electron transfer into M. atlanticus.
ACS SYNTHETIC BIOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Hye-Jin Eom, Md. Niamul Haque, Somyeong Lee, Jae-Sung Rhee
Summary: The coexistence of metals and microplastics in aquatic environments poses a growing concern, with limited understanding of the risks associated with their combined effects. This study found that metals and microplastics produce synergistic detrimental effects on marine mysids, with juveniles being more sensitive and experiencing impaired antioxidant defense and cholinergic systems.
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY
(2021)
Article
Soil Science
Joseph C. Morina, Rima B. Franklin
Summary: The salinization of coastal freshwater wetlands can affect the biogeochemical cycling of critical nutrients by altering the soil microbial community structure and function. Nitrate reduction pathways are particularly sensitive to salinization, but the interactive effects of salinization intensity and duration of exposure are still uncertain.
Article
Engineering, Marine
Rosario Calogero, Carmen Rizzo, Erika Arcadi, Maria Giulia Stipa, Pierpaolo Consoli, Teresa Romeo, Pietro Battaglia
Summary: In this study, luminescent bacteria were isolated from two deep sea organisms, and the luxAB gene was used as a molecular approach to detect bioluminescence. Physiological tests and screening of extracellular polymeric substances were conducted. The majority of the isolates were related to species of Photobacterium, with one exception of a Vibrio isolate from the teleost Chlorophthalmus agassizi.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Review
Biodiversity Conservation
Ana M. M. Goncalves, Carolina P. Rocha, Joao C. Marques, Fernando J. M. Goncalves
Summary: The lack of specificity of pesticides can harm non-target organisms through oxidative stress, lipid peroxidation, and biomembrane integrity compromise. Organophosphorus pesticides, carbamates, and organochlorine pesticides have different levels of persistence and broad-spectrum actions, posing potential threats to non-target species. Enzymes as biomarkers have proven effective in assessing freshwater communities' response to pesticide exposure, although organisms' sensitivity and responses to pollutants may vary under different conditions. Further studies on enzyme biomarkers could provide valuable information to overcome limitations in assessing the impact of pesticides on non-target individuals.
ECOLOGICAL INDICATORS
(2021)
Article
Biochemistry & Molecular Biology
Michael Moustakas, Anelia Dobrikova, Ilektra Sperdouli, Anetta Hanc, Ioannis-Dimosthenis S. Adamakis, Julietta Moustaka, Emilia Apostolova
Summary: Exposure of S. sclarea plants to excess Zn resulted in increased Ca, Fe, Mn, and Zn concentrations, but decreased Mg. The increased Mn and Fe contributed to higher efficiency of photosystem II, while decreased Mg content improved photosynthesis.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)