Distribution and ecotoxicological effects of polyhalogenated carbazoles in sediments from Jiaozhou Bay wetland.

A suite of eight polyhalogenated carbazole (PHCZ) congeners were detected in sediments of the Jiaozhou Bay wetland. 3,6-dichlorocarbazole (36-CCZ), and 3,6-dibromocarbazole (36-BCZ) were detected in all samples. The concentrations of ΣPHCZs ranged from 6.

Zooplankton distribution and influencing factors in the South Yellow Sea in spring.

Zooplankton were studied in the largest scale investigation in the South Yellow Sea in spring 2007 by using large plankton net when the green tide hasn't yet occurred. Ninety-six zooplankton species were identified. Copepods, pelagic larvae and hydromedusae were comprised of the largest number of species; Calanus sinicus, Paracalanus parvus, Aidanosagitta crassa, Euphausiidae larvae, Oithona plumifera and Corycaeus affinis were dominant species and their abundance comprised 81.

Effects of sp. Extract on Intestinal Inflammation and Microbiota Composition in LPS-Challenged Mice.

sp. is a green alga that has spread rapidly in Subei Shoal, China. To explore the potential beneficial effects of sp.

The complete mitochondrial genome of a euphausiid species: (Euphausiacea: Euphausiidae).

We describe the mitogenome sequence of collected in the adjacent waters of the Yangtze River Estuary. The assembled mitogenome is 16,192 bp in length and consists 13 protein-coding genes, 22 transfer-RNA genes, 2 ribosomal-RNA genes, and 1 non-coding region. The most common start codon for 13 PCGs is ATG and the most common termination codon is TAA.

Validation of Sentinel-3A/3B Satellite Altimetry Wave Heights with Buoy and Jason-3 Data.

The validation of significant wave height (SWH) data measured by the Sentinel-3A/3B SAR Altimeter (SRAL) is essential for the application of the data in ocean wave monitoring, forecasting and wave climate studies. Sentinel-3A/3B SWH data are validated by comparisons with U. S.

green-tide outbreaks and their environmental impact in the Yellow Sea, China.

The green tides in the Yellow Sea, China, which have been occurring since 2007, are a serious environmental problem attracting worldwide attention. Despite extensive research, the outbreak mechanisms have not been fully understood. Comprehensive analysis of anthropogenic and natural biotic and abiotic factors reveals that human activities, regional physicochemical conditions and algal physiological characteristics as well as ocean warming and biological interactions (with microorganism or other macroalgae) are closely related to the occurrence of green tides.

Complete Genome Sequences of Colwellia sp. Arc7-635, a Denitrifying Bacterium Isolated from Arctic Seawater.

Colwellia sp. Arc7-635, a psychrophilic denitrifying bacterium isolated from Arctic seawater, uses NO or NH as the sole nitrogen source to grow at low temperatures. In this article, we describe the complete genome of Colwellia sp.

Whole genome resequencing data for three rockfish species of Sebastes.

Here we report Illumina-based whole genome sequencing of three rockfish species of Sebastes in northwest Pacific. The whole genomic DNA was used to prepare 350-bp pair-end libraries and the high-throughput sequencing yielded 128.5, 137.

Simultaneous determination of neonicotinoids and fipronil and its metabolites in environmental water from coastal bay using disk-based solid-phase extraction and high-performance liquid chromatography-tandem mass spectrometry.

In the previous decade, neonicotinoids (NEOs) and fipronil (FIP) have received increasing attention as environmental pollutants because the high toxicity of these insecticides to nontarget arthropods has been recognized. In this study, a new method was developed for the simultaneous determination of seven NEOs and FIP and its metabolites (FIPs) in seawater and river water samples using disk-based solid-phase extraction (SPE) and high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). The optimization of disk-based SPE extraction and HPLC separation parameters of target analytes was investigated.

Occurrence, transportation, and distribution difference of typical herbicides from estuary to bay.

In several watersheds, agricultural activities are the cause of pollution, mainly due to the discharge of herbicides. Often, these herbicide plumes are transported to the surrounding bays. Samples of water, suspended particulate sediments (SPSs), and sediments from 37 sites in the Jiaozhou Bay in the western Pacific Ocean were collected in April 2018.

PnSAG1, an E3 ubiquitin ligase of the Antarctic moss Pohlia nutans, enhanced sensitivity to salt stress and ABA.

Plant U-box (PUB) E3 ubiquitin ligases play crucial roles in the plant response to abiotic stress and the phytohormone abscisic acid (ABA) signaling, but little is known about them in bryophytes. Here, a representative U-box armadillo repeat (PUB-ARM) ubiquitin E3 ligase from Antarctic moss Pohlia nutans (PnSAG1), was explored for its role in abiotic stress response in Arabidopsis thaliana and Physcomitrella patens. The expression of PnSAG1 was rapidly induced by exogenous abscisic acid (ABA), salt, cold and drought stresses.

Fusion of microplastics into the mussel byssus.

Microplastics have been found to adhere to the surface of specific tissues or organs other than being ingested by the organisms. To further test the hypothesis that microplastics might get into specific body parts of organisms, mussel byssus was chosen as a target subject in the present study. In the field investigation, microplastics were found in mussel byssus, and the abundance of microplastics was 0.

Biosynthesis, characterization and antibacterial activity of silver nanoparticles by the Arctic anti-oxidative bacterium Paracoccus sp. Arc7-R13.

Silver nanoparticles (AgNPs) have attracted wide interest due to its broad range of applications. This study aims to describe the biosynthesis of AgNPs using an Arctic anti-oxidative bacterium Arc7-R13 and to study its characteristics and antibacterial activity. The biosynthesis of AgNPs was verified using UV-Vis spectrum with the maximum absorption at 416 nm.

A Performance Evaluation Scheme for Multiple Object Tracking with HFSWR.

High-frequency surface wave radar (HFSWR) can detect and continuously track ship objects in real time and beyond the horizon. When ships navigate in a sea area, their motions in a time period form a scenario. The diversity and complexity of the motion scenarios make it difficult to accurately track ships, in which failures such as track fragmentation (TF) are frequently observed.

Probabilistic ecological risk assessment of heavy metals in western Laizhou Bay, Shandong Province, China.

Considering the serious land-based pollution and the weak water exchange ability of western Laizhou Bay, it is essential to conduct an ecological risk assessment of the pollutants in this area. In this study, the ecological risk caused by heavy metals deposited in the surface sediments and those resuspended in the seawater of western Laizhou Bay was evaluated using probabilistic approaches. First, the concentrations of seven heavy metals, namely As, Cd, Cr, Cu, Hg, Pb, and Zn, in the surface sediments and seawater of western Laizhou Bay were detected during the spring and autumn of 2016.

The moss jasmonate ZIM-domain protein PnJAZ1 confers salinity tolerance via crosstalk with the abscisic acid signalling pathway.

Abscisic acid (ABA) and jasmonates (JAs) are the primary plant hormones involved in mediating salt tolerance. In addition, these two plant hormones exert a synergistic effect to inhibit seed germination. However, the molecular mechanism of the interaction between ABA signalling and JA signalling is still not well documented.

Transcriptome sequencing of Antarctic moss under salt stress emphasizes the important roles of the ROS-scavenging system.

Mosses are predominant terrestrial vegetation in Antarctica. Their distributions appear to be controlled more by water and salinity. The Antarctic moss Pohlia nutans can tolerate high salt stress.

Isolation and biochemical characterization of a metagenome-derived 3-deoxy-D-arabino-heptulosonate-7-phosphate synthase gene from subtropical marine mangrove wetland sediments.

3-Deoxy-D-arabino-heptulosonate-7-phosphate synthase (DAHPS) is a key rate-limiting enzyme in aromatic amino acid anabolism. A new I-type DAHPS gene (aro1A) was identified in a metagenomic library from subtropical marine mangrove sediment. The gene encoded a polypeptide composed of 272 amino acids and had a maximum similarity of 52.

Identification and biochemical characterization of a novel exo-type β-agarase Aga3463 from an Antarctic Pseudoalteromonas sp. strain.

An agar-degrading Antarctic bacterium was isolated and identified as Pseudoalteromonas sp. NJ21. This strain showed strong agarolytic activity and could use agar as the sole carbon source for growth.

Intrinsic peroxidase-like activity of CuZnSn(SSe) nanocrystals, and their application to the colorimetric detection of HO.

Nanocrystals (NCs) of type CuZnSn(SSe) (CZTSSe) were prepared via a solvothermal approach. They are shown to be highly efficient peroxidase (POx) mimics for colorimetric detection of HO. By varying the molar ratio of S and Se during preparation, the NCs showed different crystal structures, morphologies, surface properties, and POx-like activities.

Observation and comparison of tower vibration and underwater noise from offshore operational wind turbines in the East China Sea Bridge of Shanghai.

Underwater operational turbine noise emitted by China's first offshore wind farm in the East China Sea Bridge of Shanghai was measured and analyzed in this study. Two sensors were used in the measurement: a hydrophone recording the underwater sound and an accelerometer placed in the turbine tower detecting the tower vibrations. Measurements were performed at two different types of wind turbines: a Sinovel 3 MW SL3000 turbine and a Shanghai Electric 3.

Multifunctional α-amylase Amy19 possesses agarase, carrageenase, and cellulase activities.

The open reading frame of an α-amylase coding gene, amy19, was obtained from a fosmid genomic library of hot spring bacterium Bacillus BI-19 by a plate-based assay of carrageenase activity. After heterologous expression of the gene, the recombinant Amy19 was found to possess α-amylase, agarase, carrageenase, and cellulase activities, and could degrade soluble starch, agarose, carrageen, and sodium cellulose into oligosaccharides with low degrees of polymerization. To explore the multifunctional mechanism of Amy19, three continuous glycosyl hydrolase 70 (GH70) motifs in the Amy19 encoding sequence were deleted one by one, then in pairs, then all at once.

Microbial community composition and diversity in the Indian Ocean deep sea REY-rich muds.

Studies about the composition and diversity of microbial community in the Rare Earth Elements-rich muds are limited. In this research, we conducted a characterization for the composition and diversity of bacterial and archaeal communities from rare earth elements-rich gravity core sediment at approximately 4800 meters deep in the Indian Ocean by Illumina high-throughput sequencing targeting 16S rRNA genes. The results showed that the most abundant bacteria were Proteobacteria, followed by Firmicutes and Actinobacteria.

Spatial and seasonal characteristics of dissolved heavy metals in the surface seawater of the Yellow River Estuary, China.

Spatial-seasonal variations, sources and correlations with seawater physiochemical factors and the pollution indexes of dissolved heavy metals in the surface seawater of the Yellow River Estuary in China were investigated. The concentrations of copper (Cu), lead (Pb), zinc (Zn), cadmium (Cd), arsenic (As) and mercury (Hg) had ranges of 0.04-31.