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1. When are bacteria really gazelles? Comparing patchy ecologies with dimensionless numbers

Author:
Samuel S. Urmy; Alli N. Cramer; Tanya L. Rogers; Jenna Sullivan‐Stack; Marian Schmidt; Simon D. Stewart; Celia C. Symons
Source:
Ecology letters 2022 v.25 no.5 pp. 1323-1341
ISSN:
1461-023X
Subject:
Pseudoalteromonas,   etc   ; reproduction; steppes;     Show all 3 Subjects
Abstract:
... From micro to planetary scales, spatial heterogeneity—patchiness—is ubiquitous in ecosystems, defining the environments in which organisms move and interact. However, most large‐scale models still use spatially averaged ‘mean fields’ to represent natural populations, while fine‐scale spatially explicit models are mostly restricted to particular organisms or systems. In a conceptual paper, Grünbaum ...
DOI:
10.1111/ele.13987

2. Reconciling the Conflict between Optical Transparency and Fouling Resistance with a Nanowrinkled Surface Inspired by Zebrafish’s Cornea

Author:
Andre E. Vellwock; Pei Su; Zijing Zhang; Danqing Feng; Haimin Yao
Source:
ACS applied materials & interfaces 2022 v.14 no.6 pp. 7617-7625
ISSN:
1944-8252
Subject:
Pseudoalteromonas,   etc   ; Danio rerio; antifouling activities; biofouling; cornea; topography; transmittance; wavelengths;     Show all 8 Subjects
Abstract:
... Surface topography has been demonstrated as an effective nonchemical strategy for controlling the fouling resistance of a surface, but its impact on optical transparency remains a barrier to the application of this strategy in optical materials. To reconcile the conflicting effects of surface topography on optical transparency and fouling resistance, here we study the optical properties and antifo ...
DOI:
10.1021/acsami.1c22205

3. Alterins, a new family of marine antibacterial cyclolipopeptides

Author:
Clément Offret; Héléna Cuny; Pierre-Edouard Bodet; Florie Desriac; Camille Jegou; Alexis Bazire; Romain Chevrot; Valérie Thiery; Benjamin Brillet; Yannick Fleury
Source:
International journal of antimicrobial agents 2022 v.59 no.3 pp. 106514
ISSN:
0924-8579
Subject:
Pseudoalteromonas,   etc   ; amino acids; antibacterial properties; fatty acids; hemolymph; hydroxylation; mass spectrometry; new family; oysters;     Show all 9 Subjects
Abstract:
... Five strains of Pseudoalteromonas, isolated from oyster haemolymph, have exhibited antibacterial activity against several Gram-negative bacteria. Bioactive compounds have been identified in their cell-free supernatant and characterised as alterins, which are cyclolipopeptides comprising a heptapeptidic ring connected to a fatty acid chain. Using ultra-performance liquid chromatography–high-resolut ...
DOI:
10.1016/j.ijantimicag.2021.106514

4. C-Terminal Bacterial Immunoglobulin-like Domain of κ-Carrageenase Serves as a Multifunctional Module to Promote κ-Carrageenan Hydrolysis

Author:
Mengdan Xing; Yan Wang; Yujuan Zhao; Zhe Chi; Zhenming Chi; Guanglei Liu
Source:
Journal of agricultural and food chemistry 2022 v.70 no.4 pp. 1212-1222
ISSN:
1520-5118
Subject:
Pseudoalteromonas,   etc   ; active sites; biotechnology; catalytic activity; food chemistry; hydrolysis; mechanism of action; oligosaccharides; sequence analysis; thermal stability;     Show all 10 Subjects
Abstract:
... κ-Carrageenase is an important component for κ-carrageenan oligosaccharide production. Generally, noncatalytic domains are appended to carbohydrate-active domains and potentiate catalytic activity. However, studies devoted to κ-carrageenase are relatively few. Here, a C-terminal bacterial immunoglobulin-like domain (Big_2) was identified in κ-carrageenase (PpCgk) from Pseudoalteromonas porphyrae. ...
DOI:
10.1021/acs.jafc.1c07233

5. Characterization of differentiated autoregulation of LuxI/LuxR-type quorum sensing system in Pseudoalteromonas

Author:
Shuangjia Li; Shijun Wu; Yixuan Ren; Qiu Meng; Jianhua Yin; Zhiliang Yu
Source:
Biochemical and biophysical research communications 2022 v.590 pp. 177-183
ISSN:
0006-291X
Subject:
Pseudoalteromonas,   etc   ; Santalum yasi; autoregulation; lactones; research;     Show all 5 Subjects
Abstract:
... Gram-negative bacteria usually use acyl-homoserine lactones (AHLs)-mediated LuxI/LuxR-type quorum sensing (QS) systems for cell-cell cooperation and/or bacteria-environment communication. LuxI and LuxR are AHLs synthase and receptor, respectively. These two parts could form a positive regulatory feedback loop, controlling various types of group behaviors. However, the autoregulation mechanisms bet ...
DOI:
10.1016/j.bbrc.2021.12.107

6. Biochemical Characterization and Cold-Adaption Mechanism of a PL-17 Family Alginate Lyase Aly23 from Marine Bacterium Pseudoalteromonas sp. ASY5 and Its Application for Oligosaccharides Production

Author:
Xiang Tang; Chao Jiao; Yi Wei; Xiao-Yan Zhuang; Qiong Xiao; Jun Chen; Fu-Quan Chen; Qiu-Ming Yang; Hui-Fen Weng; Bai-Shan Fang; Yong-Hui Zhang; An-Feng Xiao
Source:
Marine drugs 2022 v.20 no.2 pp. -
ISSN:
1660-3397
Subject:
Pseudoalteromonas carrageenovora,   etc   ; alginate lyase; alginates; antioxidants; aquatic bacteria; biocatalysts; carbon cycle; ethanol production; hydrolysis; molecular dynamics; substrate specificity; trisaccharides;     Show all 12 Subjects
Abstract:
... As an important enzyme involved in the marine carbon cycle, alginate lyase has received extensive attention because of its excellent degradation ability on brown algae, which is widely utilized for alginate oligosaccharide preparation or bioethanol production. In comparison with endo-type alginate lyases (PL-5, PL-7, and PL-18 families), limited studies have focused on PL-17 family alginate lyases ...
DOI:
10.3390/md20020126

7. Pseudoalteromonas piscicida X-8 causes bleaching disease in farmed Saccharina japonica

Author:
Xiaoyang Zhang; Yao Chen; Mahasweta Saha; Yingrui Zhuang; Lirong Chang; Luyang Xiao; Gaoge Wang
Source:
Aquaculture 2022 v.546 pp. 737354
ISSN:
0044-8486
Subject:
Pseudoalteromonas piscicida,   etc   ; Gram-negative bacteria; Saccharina japonica; aquaculture; cell walls; chloroplasts; disease control; disease occurrence; macroalgae; mitochondria; models; nucleotide sequences; ultrastructure; virulence;     Show all 14 Subjects
Abstract:
... Saccharina japonica is a commercially farmed seaweed of global importance. However, disease occurrence during different stages of cultivation can result in substantial economic losses. Identification of the causative agents of disease remains a significant bottleneck to the large scale cultivation of S. japonica. In this study, an aerobic heterotrophic, flagellated, rod-shaped Gram-negative bacter ...
DOI:
10.1016/j.aquaculture.2021.737354

8. How do environmentally friendly antifouling alkaloids affect marine fouling microbial communities?

Author:
Yumiao Gao; Qingyue Meng; Xuefeng Zhou; Xiaowei Luo; Ziheng Su; Zihui Chen; Riming Huang; Yonghong Liu; Xiaoyong Zhang
Source:
Science of the total environment 2022 v.820 pp. 152910
ISSN:
0048-9697
Subject:
Pseudoalteromonas,   etc   ; Aspergillus; Pseudomonas; biofilm; environment; fungi; poly(vinyl chloride);     Show all 7 Subjects
Abstract:
... Most previous studies on antifouling (AF) agents have focused on the influence of biofilm formation constituted by single or multiple cultured microbial species, and very few studies have analyzed the relationship between environmentally friendly AF compounds and marine fouling microbial communities (MFMCs). This is the first investigation of the impact of three environmentally friendly alkaloids ...
DOI:
10.1016/j.scitotenv.2021.152910

9. Molecular Relationships in Biofilm Formation and the Biosynthesis of Exoproducts in Pseudoalteromonas spp.

Author:
P. Alviz-Gazitua; A. González; M. R. Lee; C. P. Aranda
Source:
Marine biotechnology 2022 v.24 no.3 pp. 431-447
ISSN:
1436-2228
Subject:
Pseudoalteromonas,   etc   ; biofilm; biosynthesis; biotechnology; epiphytes; liquids; microbiome; secondary metabolites;     Show all 8 Subjects
Abstract:
... Most members of the Pseudoalteromonas genus have been isolated from living surfaces as members of epiphytic and epizooic microbiomes on marine macroorganisms. Commonly Pseudoalteromonas isolates are reported as a source of bioactive exoproducts, i.e., secondary metabolites, such as exopolymeric substances and extracellular enzymes. The experimental conditions for the production of these agents are ...
DOI:
10.1007/s10126-022-10097-0

10. Insights into nitrogen removal from seawater-based wastewater through marine anammox bacteria under ampicillin stress: Microbial community evolution and genetic response

Author:
Jin Li; Fei Gao; Xiuqin Chen; Yulong Zhang; Huiyu Dong
Source:
Journal of hazardous materials 2022 v.424 pp. 127597
ISSN:
0304-3894
Subject:
Pseudoalteromonas,   etc   ; Colwellia; ampicillin; anaerobic ammonium oxidation; antibiotic resistance; aquatic environment; evolution; microbial communities; nitrogen; salt tolerance; sludge; symbiosis; total nitrogen; wastewater; wastewater treatment;     Show all 15 Subjects
Abstract:
... Global spread of ampicillin (AMP) in the aquatic environment have attracted much attention recently. Marine anammox bacteria (MAB) have potentials in saline wastewater treatment due to their good salt tolerance. However, to date, the effect resulting from AMP on MAB is still unknown. Herein, the effect of AMP on MAB, involving microbial community evolution and genetic response, was investigated fo ...
DOI:
10.1016/j.jhazmat.2021.127597

11. Isolation and Characterization of a Novel Siphoviridae Phage, vB_AbaS_TCUP2199, Infecting Multidrug-Resistant Acinetobacter baumannii

Author:
Meity Mardiana; Soon-Hian Teh; Ling-Chun Lin; Nien-Tsung Lin
Source:
Viruses 2022 v.14 no.6 pp. -
ISSN:
1999-4915
Subject:
Pseudoalteromonas,   etc   ; Achromobacter; Acinetobacter baumannii; DNA; Siphoviridae; antibiotic resistance; bacteriophages; databases; genome; host range; multiple drug resistance; pH; pathogens; phylogeny; polyacrylamide gel electrophoresis; sequence analysis;     Show all 16 Subjects
Abstract:
... Multidrug-resistant Acinetobacter baumannii (MDRAB) is a pathogen recognized as antimicrobial-resistant bacteria involved in healthcare-associated infections. Resistance to antibiotics has made alternative therapies necessary. Bacteriophage therapy is considered a potential solution to treat MDRAB. In this study, we isolated and characterized the phage vB_AbaS_TCUP2199 (TCUP2199), which can infect ...
DOI:
10.3390/v14061240

12. Anti‐Vibrio activity of Pseudoalteromonas xiamenensis STKMTI.2, a new potential vibriosis biocontrol bacterium in marine aquaculture

Author:
Desy Putri Handayani; Alim Isnansetyo; Indah Istiqomah; Jumina Jumina
Source:
Aquaculture research 2022 v.53 no.5 pp. 1800-1813
ISSN:
1355-557X
Subject:
Pseudoalteromonas,   etc   ; Vibrio harveyi; agar; bacteria; biological control; coculture; ethyl acetate; gas chromatography-mass spectrometry; mariculture; minimum inhibitory concentration; nucleotide sequences; research; sequence analysis; vibriosis; Indonesia;     Show all 15 Subjects
Abstract:
... We isolated Pseudoalteromonas xiamenensis STKMTI.2 from the mangrove sediments of Setokok Island, Indonesia. This study aimed to identify the bacterium, investigate antagonistic properties and minimum inhibitory concentration, and detect the active compounds using gas chromatography–mass spectrometry. The bacterium was identified using a biochemical test and 16S rDNA sequence analysis. Bioactive c ...
DOI:
10.1111/are.15708

13. Reaching out in anticipation: bacterial membrane extensions represent a permanent investment in polysaccharide sensing and utilization

Author:
Alexandra Dürwald; Marie‐Katherin Zühlke; Rabea Schlüter; Rebecca Gebbe; Daniel Bartosik; Frank Unfried; Dörte Becher; Thomas Schweder
Source:
Environmental microbiology 2021 v.23 no.6 pp. 3149-3163
ISSN:
1462-2912
Subject:
Pseudoalteromonas distincta,   etc   ; aquatic ecosystems; carbon; genomics; microscopy; phosphates; polysaccharides; Antarctic region;     Show all 8 Subjects
Abstract:
... Outer membrane extensions are common in many marine bacteria. However, the function of these surface enlargements or extracellular compartments is poorly understood. Using a combined approach of microscopy and subproteome analyses, we therefore examined Pseudoalteromonas distincta ANT/505, an Antarctic polysaccharide degrading gamma‐proteobacterium. P. distincta produced outer membrane vesicles (M ...
DOI:
10.1111/1462-2920.15537

14. Biogeography of culturable marine bacteria from both poles reveals that ‘everything is not everywhere’ at the genomic level

Author:
Qi‐Long Qin; Zhi‐Bin Wang; Qian‐Qian Cha; Sha‐Sha Liu; Xue‐Bing Ren; Hui‐Hui Fu; Mei‐Ling Sun; Dian‐Li Zhao; Andrew McMinn; Yin Chen; Xiu‐Lan Chen; Yu‐Zhong Zhang; Ping‐Yi Li
Source:
Environmental microbiology 2022 v.24 no.1 pp. 98-109
ISSN:
1462-2912
Subject:
Pseudoalteromonas,   etc   ; Psychrobacter; biogeography; genes; genomics; geographical isolation; Antarctic region; Arctic region;     Show all 8 Subjects
Abstract:
... Based on 16S rRNA gene analyses, the same bacterial operational taxonomic units (OTUs) are common to both the Arctic and Antarctic oceans, supporting the concept ‘everything is everywhere’. However, whether the same OTUs from both poles have identical genomes, i.e. whether ‘everything is still everywhere’ at the genomic level has not yet been examined systematically. Here, we isolated, sequenced a ...
DOI:
10.1111/1462-2920.15870

15. Microbial Richness of Marine Biofilms Revealed by Sequencing Full-Length 16S rRNA Genes

Author:
Shougang Wang; Xiaoyan Su; Han Cui; Meng Wang; Xiaoli Hu; Wei Ding; Weipeng Zhang
Source:
Genes 2022 v.13 no.6 pp. -
ISSN:
2073-4425
Subject:
Pseudoalteromonas,   etc   ; Arcobacter; Photobacterium; Thalassomonas; Vibrio; biofilm; genes; lifestyle; seawater; species richness;     Show all 10 Subjects
Abstract:
... Marine biofilms are a collective of microbes that can grow on many different surfaces immersed in marine environments. Estimating the microbial richness and specificity of a marine biofilm community is a challenging task due to the high complexity in comparison with seawater. Here, we compared the resolution of full-length 16S rRNA gene sequencing technique of a PacBio platform for microbe identif ...
DOI:
10.3390/genes13061050

16. Optimising the DPPH Assay for Cell-Free Marine Microorganism Supernatants

Author:
Yehui Gang; Tae-Yang Eom; Svini Dileepa Marasinghe; Youngdeuk Lee; Eunyoung Jo; Chulhong Oh
Source:
Marine drugs 2021 v.19 no.5 pp. -
ISSN:
1660-3397
Subject:
Pseudoalteromonas rubra,   etc   ; 2,2-diphenyl-1-picrylhydrazyl; antioxidants; ethanol; methanol; solvents; water content;     Show all 7 Subjects
Abstract:
... Antioxidants prevent ageing and are usually quantified and screened using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay. However, this assay cannot be used for salt-containing samples, such as the cell-free supernatants of marine microorganisms that are aggregated under these conditions. Herein, the DPPH solvent (methanol or ethanol) and its water content were optimized to enable the analysis of ...
DOI:
10.3390/md19050256

17. Transport of marine tracer phage particles in soil

Author:
Xin You; René Kallies; Konstanze Hild; Anke Hildebrandt; Hauke Harms; Antonis Chatzinotas; Lukas Y. Wick
Source:
Science of the total environment 2022 v.814 pp. 152704
ISSN:
0048-9697
Subject:
Pseudoalteromonas,   etc   ; Escherichia; bacteriophages; environment; genes; quantitative polymerase chain reaction; soil; surface water;     Show all 8 Subjects
Abstract:
... Marine phages have been applied to trace ground- and surface water flows. Yet, information on their transport in soil and related particle intactness is limited. Here we compared the breakthrough of two lytic marine tracer phages (Pseudoalteromonas phages PSA-HM1 and PSA-HS2) with the commonly used Escherichia virus T4 in soil- and sand-filled laboratory percolation columns. All three phages showe ...
DOI:
10.1016/j.scitotenv.2021.152704

18. Capsular polysaccharide from a fish-gut bacterium induces/promotes apoptosis of colon cancer cells in vitro through Caspases' pathway activation

Author:
Rossella Di Guida; Angela Casillo; Antonietta Stellavato; Soichiro Kawai; Takuya Ogawa; Celeste Di Meo; Jun Kawamoto; Tatsuo Kurihara; Chiara Schiraldi; Maria Michela Corsaro
Source:
Carbohydrate polymers 2022 v.278 pp. 118908
ISSN:
0144-8617
Subject:
Pseudoalteromonas nigrifaciens,   etc   ; antineoplastic activity; apoptosis; biocompatible materials; biodegradability; bioinformatics; caspases; colorectal neoplasms; drug therapy; fish; immunotherapy; intestines; morbidity; mortality; polymers; polysaccharides; psychrotrophic bacteria; radiotherapy; spectroscopy; surgery; toxicity;     Show all 21 Subjects
Abstract:
... Among the widespread malignancies colorectal cancer is the most lethal. Treatments of this malignant tumor include surgery for lesions and metastases, radiotherapy, immunotherapy, and chemotherapy. Nevertheless, novel therapies to reduce morbidity and mortality are demanding. Natural products, such as polysaccharides, can be a valuable alternative to sometimes very toxic chemotherapeutical agents, ...
DOI:
10.1016/j.carbpol.2021.118908

19. Metagenomic signatures of transportation stress in the early life stages of cobia (Rachycentron canadum) to aid in mitigation strategies

Author:
T.G. Sumithra; S. Gayathri; S.R. Krupesha Sharma; Sanal Ebeneezar; K.K. Anikuttan; K.A. Sajina; G. Iyyapparaja Narasimapallavan; K.J. Reshma; R. Vishnu; G. Tamilmani; M. Sakthivel; P. Rameshkumar; D. Linga Prabu; P. Vijayagopal; A. Gopalakrishnan
Source:
Aquaculture 2022 v.559 pp. 738407
ISSN:
0044-8486
Subject:
Pseudoalteromonas,   etc   ; Acinetobacter; Actinobacteria; Alteromonas; Arcobacter; Empedobacter; Enterobacter; Pseudomonas; Rachycentron canadum; Serratia; Vibrio; digestive system; discriminant analysis; disease susceptibility; fish; juveniles; larvae; mariculture; metagenomics; microbiome; probiotics; species diversity;     Show all 22 Subjects
Abstract:
... Cobia (Rachycentron canadum) is a high-value marine aquaculture species. Knowledge of the microbial dynamics in various aquaculture operations is crucial for developing suitable management practices. The present study revealed the critical dysbiotic events in the whole larval and juvenile-gut microbiome of cobia, through an inevitable aquaculture operation, viz. live transportation. The results th ...
DOI:
10.1016/j.aquaculture.2022.738407

20. Pseudoalteromone A, a Ubiquinone Derivative from Marine Pseudoalteromonas spp., Suppresses Melanogenesis

Author:
Su-Jin Lim; Dae-jin Min; Sohee Kim; Jihye Lee; Eun-Soo Lee; Hyuk Kim; Sung-Yoen Cho; Heung-Soo Beak; Chang-Seok Lee; Sang-Jip Nam; Jaeyoung Ko
Source:
Marine drugs 2021 v.19 no.11 pp. -
ISSN:
1660-3397
Subject:
Pseudoalteromonas,   etc   ; Western blotting; artificial skin; fluorescence; humans; melanin; melanocytes; melanoma; mice; models; ubiquinones;     Show all 11 Subjects
Abstract:
... An ubiquinone derivative, pseudoalteromone A (1), has been isolated from two marine-derived Pseudoalteromonas spp., APmarine002 and ROA-050, and its anti-melanogenesis activity was investigated. The anti-melanogenic capacity of pseudoalteromone A was demonstrated by assessing the intracellular and extracellular melanin content and cellular tyrosinase activity in the B16 cell line, Melan-a mouse me ...
DOI:
10.3390/md19110612