Water Microdroplets Promote Spontaneous Oxidation of Amino Acid- and Peptide-related Thiols to Disulfide Bonds.

Disulfide bonds (S-S) play a critical role in modern biochemistry, organic synthesis and prebiotic chemistry. Traditional methods for synthesizing disulfide bonds often rely on oxygen, alkali,  and metal catalysts. Herein, thiol groups involved in amino acids and peptides were spontaneously converted into symmetrical and unsymmetrical disulfide bonds within water microdroplets, without the need for catalysts or oxygen, and under room temperature.

Essential Oil from Tetrapanax papyrifer (Hook.) K. Koch: Chemical Composition, Antioxidant Activity, α-Glucosidase Inhibitory Effect Integrating Molecular Docking Analysis.

The present study investigated the chemical composition of essential oil from Tetrapanax papyrifer and evaluated its antioxidant and anti-α-glucosidase activity. Sixty-one essential oil compounds from Tetrapanax papyrifer were identified by gas chromatography-mass spectrometry (GC-MS) and gas chromatography-flame ionization detector (GC-FID). The essential oil is rich in sesquiterpenoids (96.

Sex-specific effects of triphenyltin on gut microbiota and intergenerational effects in marine medaka (Oryzias melastigma).

In this study, a mixed model was applied to the marine medaka to investigate the intergenerational effects of parental exposure to Triphenyltin (TPT) and the subsequent perturbations in parental gut microbiota on the gut microbiota of offspring. In addition, "microgenderome" has been focused on elucidating the different responses of males and females to environmental stress. The results indicated that TPT exhibited androgenic effects and long-term toxicological consequences, influencing the internal steroid hormone levels of the offspring and leading to their abnormal growth and development.

Biotransport and toxic effects of micro- and nanoplastics in fish model and their potential risk to humans: A review.

The growing body of scientific evidence suggests that micro- and nanoplastics (MPs/NPs) pose a significant threat to aquatic ecosystems and human health. These particles can enter organisms through ingestion, inhalation, dermal contact, and trophic transfer. Exposure can directly affect multiple organs and systems (respiratory, digestive, neurological, reproductive, urinary, cardiovascular) and activate extensive intracellular signaling, inducing cytotoxicity involving mechanisms such as membrane disruption, extracellular polymer degradation, reactive oxygen species (ROS) production, DNA damage, cellular pore blockage, lysosomal instability, and mitochondrial depolarization.

Catalysts for sulfur: understanding the intricacies of enzymes orchestrating plant sulfur anabolism.

This review highlights the sulfur transporters, key enzymes and their encoding genes involved in plant sulfur anabolism, focusing on their occurrence, chemistry, location, function, and regulation within sulfur assimilation pathways. Sulfur, a vital element for plant life, plays diverse roles in metabolism and stress response. This review provides a comprehensive overview of the sulfur assimilation pathway in plants, highlighting the intricate network of enzymes and their regulatory mechanisms.

A new empirical equation for the gas/particle partitioning of OPFRs in ambient atmosphere.

Gas/particle (G/P) partitioning is a core process governing the atmospheric transport of organophosphate flame retardants (OPFRs). However, accurately predicting the G/P partition performance of OPFRs remains a challenge. In this study, four independent models were employed to estimate the characteristics of OPFR G/P partitioning within the octanol-air partition coefficient range of 4.

Description of Hyphococcus formosus sp. nov. and Hyphococcus lacteus sp. nov., isolated from coastal sediment, and reclassification of Marinicaulis flavus as Hyphococcus luteus nom. nov. and Marinicaulis aureus as Hyphococcus aureus comb. nov.

During a study on sediment bacterial diversity in coastal China, three bacterial strains, DH-69, EH-24, and ECK-19, were isolated from coastal sediments off Xiaoshi Island, Weihai. These strains were Gram-staining-negative, aerobic, and coccoid to rod-shaped with prosthecae and flagella. Comparison of the 16S rRNA gene showed that they shared the highest identity values with Hyphococcus flavus MCCC 1K03223 (96.

The telomere-to-telomere (T2T) genome provides insights into the evolution of specialized centromere sequences in sandalwood.

Background: Sandalwood, a prized hemiparasitic plant, is highly sought in the commercial market because of its aromatic core materia. The structure and stability of the genome are instrumental in the rapid adaptation of parasitic plants to their surroundings. However, there is a conspicuous lack of research on the genomic-level adaptive evolution of sandalwood.

Comprehensive genome annotation of the model ciliate Tetrahymena thermophila by in-depth epigenetic and transcriptomic profiling.

The ciliate Tetrahymena thermophila is a well-established unicellular model eukaryote, contributing significantly to foundational biological discoveries. Despite its acknowledged importance, current studies on Tetrahymena biology face challenges due to gene annotation inaccuracy, particularly the notable absence of untranslated regions (UTRs). To comprehensively annotate the Tetrahymena macronuclear genome, we collected extensive transcriptomic data spanning various cell stages.

A novel single-tube LAMP-CRISPR/Cas12b method for rapid and visual detection of zoonotic Toxoplasma gondii in the environment.

Background: Toxoplasma gondii oocysts, excreted in cat feces, pose a significant health risk to humans through contaminated soil and water. Rapid and accurate detection of T. gondii in environmental samples is essential for public health protection.

Transgenerational neurotoxic effects of triphenyltin on marine medaka: Impaired dopaminergic system function.

Triphenyltin (TPT), a widely used environmental contaminant in antifouling paints, is known for its neurotoxic effects. To investigate the multigenerational impacts of long-term exposure (6 weeks) to environmental concentrations of TPT (100 ng/L) on either parent, we performed mixed mating between control and exposed groups (males or females). Although there was no direct contact with TPT in the subsequent generations, both the first and second generations displayed behavioral abnormalities, including reduced activity and impaired cognitive function, with pronounced gender differences and anxiety-like behaviors.

Heterochromatin-dependent transcription links the PRC2 complex to small RNA-mediated DNA elimination.

Facultative heterochromatin is marked by the repressive histone modification H3K27me3 in eukaryotes. Deposited by the PRC2 complex, H3K27me3 is essential for regulating gene expression during development, and chromatin bearing this mark is generally considered transcriptionally inert. The PRC2 complex has also been linked to programmed DNA elimination during development in ciliates such as Paramecium.

A study on digital literacy and influencing factors among Chinese seafarers.

Digital literacy and skills have become critical indicators of international competitiveness, gaining attention across all sectors. As digital transformation accelerates, the shipping industry, a pivotal center of global trade, faces new challenges. The advent of Maritime Autonomous Surface Ships (MASS) further heightens the demand for enhanced digital literacy among seafarers.

Describing five new strains in the family Woeseiaceae and emended description of the order Woeseiales with genomic features related to environmental adaptation.

The family Woeseiaceae, also known as the JTB255 bacterial group, are ubiquitous and abundant core members of microbial communities in marine surface sediments. However, to date, only one Woeseiaceae strain isolated from marine sediments has been described, and the phylogeny and environmental adaptation mechanisms of this group have been little explored. Here, we isolated five novel Woeseiaceae strains from the marine solar saltern in Weihai, China.

Fluorescence turn-on recognition of trace acetamiprid in seawater using selective molecularly imprinted polymer-based nanoprobe.

A novel imprinted composite nanoprobe for fluorescence turn-on recognition of acetamiprid was fabricated and applied to rapidly and sensitively detect trace-level acetamiprid in seawater. The fluorescent probe was prepared using modified fluorescein isothiocyanate as a response unit to improve the sensitivity of signal transmission. The quantitative analysis of acetamiprid was obtained by measuring fluorescence enhancement efficiency of the probe.

Anti-Sintering Behavior of GYYSZ, Thermophysical Properties, and Thermal Shock Behavior of Thermal Barrier Coating with YSZ/Composite/GYYSZ System by Atmospheric Plasma Spraying.

In this study, GdO and YbO co-doped YSZ (GYYSZ) ceramic coatings were prepared via atmospheric plasma spraying (APS). The GYYSZ ceramic coatings were subjected to heat treatment at different temperatures for 5 h to analyze their high-temperature phase stability and sintering resistance. The thermophysical properties of GYYSZ, YSZ, and composite coatings were compared.

sp. nov. and sp. nov., isolated from marine environment, and reclassification of two species of the genus as species of the genus .

Two Gram-stain-negative, facultatively anaerobic, rod-shaped bacteria were isolated from coastal sediments and salt marshes in Weihai, China, and designated as SDUM158017 and SDUM158016, respectively. Both grew at temperatures ranging from 20 to 43°C and within a pH range of 6.0 to 9.

Description of the first marine-isolated member of the under-represented phylum , and the environmental distribution and ecogenomics of ord. nov.

The phylum is widespread but rarely cultured and, in fact, there are only six described species isolated from soil, freshwater, and wastewater treatment. However, no isolates of from marine environment have been described; thus, little is known about the physiology and metabolism of members of the marine lineages. In this study, four novel facultatively anaerobic bacterial strains belonging to were isolated from marine sediments collected from Xiaoshi Island in Weihai, China, using an aerobic enrichment method.

Phylogenomic analyses of hamsters (Cricetinae) inferred from GBS data and mitochondrial genomes.

Accurate species delimitation and identification is crucial for species conservation, providing a foundation for studies on evolutionary biology, ecology, and essentially all biological disciplines. The subfamily Cricetinae (Cricetidae, Rodentia), known as hamsters, is widely distributed in the Palearctic region. At present, there are nine genera and 18 species of hamsters are recognized worldwide, although the taxonomic status of certain taxa remains unclear.

Food web bioaccumulation model for ecological risk assessment of emerging organic pollutants in marine ecosystems: Principles, advances and challenges.

The bioaccumulation and trophic transfer of pollutants in marine ecosystem members determine their ultimate ecological risks. Food web bioaccumulation models are widely used in scientific and regulatory programs to assess the bioaccumulation and ecological risks of pollutants at the ecosystem scale. The food web models are mainly established through concentration- and fugacity-based modeling approaches and include some chemical, food web-related, physiological and environmental factors.

CO enrichment and excess nitrogen supply synergistically increase toxicity of marine dinoflagellate Alexandrium minutum.

Discharges of CO and nutrients by anthropogenic activities have notable contributions to CO enrichment and eutrophication in coastal systems. Following our previous study that toxic dinoflagellate Alexandrium minutum will increase their growth rate and cellular toxicity under elevated levels of CO, we further examined the joint effects of CO enrichment and excess nitrogen supply through a 29-day experiment under three CO levels (400, 800 and 1200 ppm) with a high N/P ratio of 80. It was found that the two factors have synergistical effects in promoting the increase of cellular toxicity.

Decabromodiphenyl ethane (DBDPE) inhibited the growth and feeding by disrupting the gut and digestive gland homeostasis in octopus Amphioctopus fangsiao (Mollusca: Cephalopoda).

A novel brominated flame retardant decabromodiphenyl ethane (DBDPE) poses a potential threat to animals, but its effects on cephalopods remain unknown. In this study, Amphioctopus fangsiao, a common octopus in China, was exposed to DBDPE (0, 1, 50, 100, 300 μg/L) for 28 days. Chemical analysis revealed that the digestive gland bore a greater burden of DBDPE compared with other tissues.