keyword
https://read.qxmd.com/read/38454361/exploring-aeromonas-dhakensis-in-aldabra-giant-tortoises-a-debut-report-and-genetic-characterization
#21
JOURNAL ARTICLE
Chenxu Zhao, Panpan Qin, Shuai Li, Zilu Chen, Tianliang Wang, Qunchao Liang, Weishi He, Zeyu Peng, Yurong Yang, Zhifeng Peng, Yongtao Li
Aeromonas dhakensis (A. dhakensis) is becoming an emerging pathogen worldwide, with an increasingly significant role in animals and human health. It is a ubiquitous bacteria found in terrestrial and aquatic milieus. However, there have been few reports of reptile infections. In this study, a bacterial strain isolated from a dead Aldabra giant tortoise was identified as A. dhakensis HN-1 through clinical observation, matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF/MS), and gene sequencing analysis...
March 7, 2024: BMC Microbiology
https://read.qxmd.com/read/38454013/diversity-community-structure-and-abundance-of-nirs-type-denitrifying-bacteria-on-suspended-particulate-matter-in-coastal-high-altitude-aquaculture-pond-water
#22
JOURNAL ARTICLE
Kuang Chunyi, Sun Wei, Wei Mingken, Xia Chunyu, Li Changxiu
Denitrifying bacteria harboring the nitrate reductase S (nirS) gene convert active nitrogen into molecular nitrogen, and alleviate eutrophication in aquaculture water. Suspended particulate matter (SPM) is an important component of aquaculture water and a carrier for denitrification. SPM with different particle sizes were collected from a coastal high-altitude aquaculture pond in Maoming City, China. Diversity, community structure, abundance of nirS-type denitrifying bacteria on SPM and environmental influencing factors were studied using high-throughput sequencing, fluorescence quantitative PCR, and statistical analysis...
March 7, 2024: Scientific Reports
https://read.qxmd.com/read/38441470/the-impact-of-lactococcus-lactis-kust48-on-the-transcription-profile-of-aeromonas-hydrophila-infected-zebrafish-spleen
#23
JOURNAL ARTICLE
Jiayu Chen, Qiuyue Li, Lili Fan, Liqin Xie, Qilin Zhang, Xianyu Deng
Aeromonas hydrophila , an aquatic pathogenic bacterium, has been found to infect many fish species and cause huge aquaculture losses. Antibiotics are the most common drugs used to treat these infections. However, antibiotic abuse can lead to the development of antibiotic resistance. Probiotics have the potential to replace antibiotics for preventing infections. Zebrafish ( Danio rerio ) is a model organism used to study the innate immune system and host-pathogen interactions. Currently, there is little information on how the fish immune system responds to A...
March 5, 2024: Microbiology Spectrum
https://read.qxmd.com/read/38436732/acid-tolerance-response-of-salmonella-during-the-squid-storage-and-its-amine-production-capacity-analysis
#24
JOURNAL ARTICLE
Wei Ge, Qiong Yang, Hui Wang, Chuanyan Pan, Min Lv, Lingyun Liang, Shiya Ya, Xu Luo, Weisheng Wang, Huawei Ma
Salmonella exhibits a strong inducible acid tolerance response (ATR) under weak acid conditions, and can also induce high-risk strains that are highly toxic, acid resistant, and osmotic pressure resistant to aquatic products. However, the induction mechanism is not yet clear. Therefore, this study aims to simulate the slightly acidic, low-temperature, and high-protein environment during squid processing and storage. Through λRed gene knockout, exploring the effects of low-acid induction, long-term low-temperature storage, and two-component regulation on Salmonella ATR...
March 4, 2024: Archives of Microbiology
https://read.qxmd.com/read/38433361/high-toxicity-of-agro-industrial-wastewater-on-aquatic-fauna-of-a-south-american-stream-mortality-of-aquatic-turtles-and-amphibian-tadpoles-as-bioindicators-of-environmental-health
#25
JOURNAL ARTICLE
Ana P Cuzziol Boccioni, Paola M Peltzer, Andrés M Attademo, Leonardo Leiva, Carlina L Colussi, María R Repetti, Karen Russell-White, Noelia Di Conza, Rafael C Lajmanovich
The aim of this study was to characterize an aquatic system of Santa Fe province (Argentina) receiving wastewater from agro-industrial activities (mainly dairy) by in situ assessment (fauna mortality, physicochemical, microbiological, and pesticide residues measurement), and ecotoxicity bioassays on amphibian tadpoles. Water and sediment samples were obtained from the Los Troncos Stream (LTS), previous to the confluence with the "San Carlos" drainage channel (SCC), and from the SCC. Biological parameters (mortality and sublethal biomarkers) were used to evaluate ecotoxicity during 10-day exposure of Rhinella arenarum tadpoles to LTS and SCC samples...
March 2024: Water Environment Research: a Research Publication of the Water Environment Federation
https://read.qxmd.com/read/38431313/biofilm-formation-of-hafnia-paralvei-induced-by-c-di-gmp-through-facilitating-bcsb-gene-expression-promotes-spoilage-of-yellow-river-carp-cyprinus-carpio
#26
JOURNAL ARTICLE
Mengyuan Qin, Shuo Han, Miaomiao Chen, Pengju Li, Yuqi Wang, Wenfang Niu, Chao Gao, Hailei Wang, Yi Li
Hafnia paralvei, a Gram-negative foodborne pathogen, is found ubiquitously in various aquatic animals and seafoods, which can form biofilm as a dominant virulence factor that contributes to its pathogenesis. However, the biofilm formation mechanism of H. paralvei and its effect on food spoilage has not been fully characterized. Here we show that biofilm formation, is regulated by c-di-GMP which mediated by bcsB, can increase the spoilage ability of H. paralvei. We found that GTP was added exogenously to enhance the synthesis of c-di-GMP, which further promoted biofilm formation...
June 2024: Food Microbiology
https://read.qxmd.com/read/38428166/toxin-gene-detection-and-antibiotic-resistance-of-clostridium-perfringens-from-aquatic-sources
#27
JOURNAL ARTICLE
Mengxuan Li, Ying Wang, Bingyu Hou, Yibao Chen, Ming Hu, Xiaonan Zhao, Qing Zhang, Lulu Li, Yanbo Luo, Yuqing Liu, Yumei Cai
Clostridium perfringens is a zoonotic opportunistic pathogen that produces toxins that can cause necrotic enteritis and even "sudden death disease". This bacterium is widely distributed in the intestines of livestock and human, but there are few reports of distribution in aquatic animals (Hafeez et al., 2022). In order to explore the isolation rate of C. perfringens and the toxin genes they carry, 141 aquatic samples, including clams (Ruditapes philippinarum), oysters (Ostreidae), and mud snails (Bullacta exerata Philippi), were collected from the coastal areas of Shandong Province, China...
February 28, 2024: International Journal of Food Microbiology
https://read.qxmd.com/read/38421009/novel-lambdapapillomavirus-in-northern-sea-otters-enhydra-lutris-kenyoni-associated-with-oral-hyperplastic-nodules
#28
JOURNAL ARTICLE
Carlos H Romero, Pam Tuomi, Kathleen A Burek-Huntington, Verena A Gill
A novel papillomavirus (PV) associated with hyperplastic nodules scattered over the muco-cutaneous border of the oral cavity of a dead, wild, subadult northern sea otter Enhydra lutris kenyoni (NSO) in 2004 in Homer, Alaska, USA, was genetically characterized. Primers for the amplification of 2 large overlapping DNA fragments that contained the complete genome of the NSO PV were designed. Sanger methodology generated sequences from which new specific primers were designed for the primer-walking approach. The NSO PV genome consists of 8085 nucleotides and contains an early region composed of E6, E7, E1, and E2 open reading frames (ORFs), an E4 ORF (contained within E2) lacking an in-frame proximal ATG start codon, an unusually long (907 nucleotide) stretch lacking any ORFs, a late region that contains the capsid genes L2 and L1, and a non-coding regulatory region (ncRR)...
February 29, 2024: Diseases of Aquatic Organisms
https://read.qxmd.com/read/38421008/variation-in-paramarteilia-canceri-infections-in-velvet-crab-necora-puber
#29
JOURNAL ARTICLE
Signe Martin, Deborah Cheslett, Evelyn Collins, Simona Georgieva, Ian O Connor, Fiona Swords, Katie O Dwyer
Sustainable management of crustacean populations requires an understanding of the range of factors affecting different crustacean species. Recently, a high prevalence of a paramyxid parasite, Paramarteilia canceri, was reported in velvet crabs Necora puber in Ireland. Similar parasites have been known to cause mass mortalities in bivalves and, as velvet crabs are an important commercial species, these parasite infections are cause for concern. The main objective of this study was to examine variation in P. canceri infections in relation to host biology and season over a 2 yr period...
February 29, 2024: Diseases of Aquatic Organisms
https://read.qxmd.com/read/38416601/interaction-between-acanthamoeba-and-staphylococcus
#30
JOURNAL ARTICLE
Şevval M Özcan Aykol, Zuhal Zeybek
Free-living amoebae of the genus Acanthamoeba are infected by various bacteria in nature, and thus bacteria can protect themselves from adverse environmental conditions. Contrary to this ameba-bacteria relationship whether Acanthamoeba has antibacterial effects on bacteria is the different aspect of the relationship between these microorganisms. In this study, we investigate various Acanthamoeba strains have antibacterial effects on various Staphylococcus strains. Three environmental Acanthamoeba strains, isolated from various aquatic environments in Turkey, and Acanthamoeba castellanii ATCC 50373 standard strains were used in the study...
February 28, 2024: Journal of Basic Microbiology
https://read.qxmd.com/read/38413064/-study-of-the-effects-of-dietary-patterns-on-glycemic-control-in-community-type-2-diabetic-mellitus-patients
#31
JOURNAL ARTICLE
L Y Lei, L Qin, Z G Wang, J Wang, Q Zhao, C Q Ji, B Chen, Q J Zhang, F Zhou, M Wu, J Y Zhou, W J Wang
Objective: To understand the impact of diet on glycemic control in community-managed patients with type 2 diabetes mellitus (T2DM) and provide evidence for implementing prevention strategies and measures for diabetes patients. Methods: Eight communities were randomly selected from Changshu and Wuhan in 2015, and T2DM patients managed in the community were selected to conduct questionnaire surveys, physical measurements, and blood glucose testing. Factor analysis was used to obtain dietary patterns. A binary logistic regression model was used to analyze the factors affecting glycemic control...
February 10, 2024: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://read.qxmd.com/read/38410393/nutrient-structure-dynamics-and-microbial-communities-at-the-water-sediment-interface-in-an-extremely-acidic-lake-in-northern-patagonia
#32
JOURNAL ARTICLE
Mayra Cuevas, Issotta Francisco, Fernando Díaz-González, Mónica Diaz, Raquel Quatrini, Guadalupe Beamud, Fernando Pedrozo, Pedro Temporetti
Lake Caviahue (37° 50 'S and 71° 06' W; Patagonia, Argentina) is an extreme case of a glacial, naturally acidic, aquatic environment (pH ~ 3). Knowledge of the bacterial communities in the water column of this lake, is incipient, with a basal quantification of the bacterioplankton abundance distribution in the North and South Basins of Lake Caviahue, and the described the presence of sulfur and iron oxidizing bacteria in the lake sediments. The role that bacterioplankton plays in nutrient utilization and recycling in this environment, especially in the phosphorus cycle, has not been studied...
2024: Frontiers in Microbiology
https://read.qxmd.com/read/38409540/dynamics-of-gut-bacteria-across-different-zooplankton-genera-in-the-baltic-sea
#33
JOURNAL ARTICLE
Tianshuo Xu, Andreas Novotny, Sara Zamora-Terol, Peter A Hambäck, Monika Winder
In aquatic ecosystems, zooplankton-associated bacteria potentially have a great impact on the structure of ecosystems and trophic networks by providing various metabolic pathways and altering the ecological niche of host species. To understand the composition and drivers of zooplankton gut microbiota, we investigated the associated microbial communities of four zooplankton genera from different seasons in the Baltic Sea using the 16S rRNA gene. Among the 143 ASVs (amplified sequence variants) observed belonging to heterotrophic bacteria, 28 ASVs were shared across all zooplankton hosts over the season, and these shared core ASVs represented more than 25% and up to 60% of relative abundance in zooplankton hosts but were present at low relative abundance in the filtered water...
February 26, 2024: Microbial Ecology
https://read.qxmd.com/read/38408092/species-specific-emergence-of-h7-highly-pathogenic-avian-influenza-virus-is-driven-by-intrahost-selection-differences-between-chickens-and-ducks
#34
JOURNAL ARTICLE
Anja C M de Bruin, Monique I Spronken, Adinda Kok, Miruna E Rosu, Dennis de Meulder, Stefan van Nieuwkoop, Pascal Lexmond, Mathis Funk, Lonneke M Leijten, Theo M Bestebroer, Sander Herfst, Debby van Riel, Ron A M Fouchier, Mathilde Richard
Highly pathogenic avian influenza viruses (HPAIVs) cause severe hemorrhagic disease in terrestrial poultry and are a threat to the poultry industry, wild life, and human health. HPAIVs arise from low pathogenic avian influenza viruses (LPAIVs), which circulate in wild aquatic birds. HPAIV emergence is thought to occur in poultry and not wild aquatic birds, but the reason for this species-restriction is not known. We hypothesized that, due to species-specific tropism and replication, intrahost HPAIV selection is favored in poultry and disfavored in wild aquatic birds...
February 26, 2024: PLoS Pathogens
https://read.qxmd.com/read/38407194/diversity-and-distribution-of-phytophthora-species-across-different-types-of-riparian-vegetation-in-italy-with-the-description-of-phytophthora-heteromorpha-sp-nov
#35
JOURNAL ARTICLE
Carlo Bregant, Giovanni Rossetto, Nicolò Sasso, Lucio Montecchio, Lucia Maddau, Benedetto Teodoro Linaldeddu
Riparian formations encompass a diverse suite of transitional zones between terrestrial and aquatic ecosystems. During the last decades, these formations have been impacted by several emerging diseases. The first outbreaks were detected on alder formations, but have progressively also been observed on other plant species such as Betula pubescens , Nerium oleander , Populus alba , Salix alpina , Salix purpurea and Tamarix gallica . Declining plants showed a plethora of symptoms (leaf spot, shoot blight, bleeding cankers and root rot) indicative of Phytophthora infections...
February 2024: International Journal of Systematic and Evolutionary Microbiology
https://read.qxmd.com/read/38402653/description-of-a-new-genus-of-the-pectobacteriaceae-family-isolated-from-water-in-coastal-brackish-wetlands-of-the-french-camargue-region-prodigiosinella-gen-nov-including-the-new-species-prodigiosinella-aquatilis-sp-nov
#36
JOURNAL ARTICLE
Nicole Hugouvieux-Cotte-Pattat, Jean-Pierre Flandrois, Jérôme Briolay, Sylvie Reverchon, Céline Brochier-Armanet
The Pectobacteriaceae family comprises plant pathogens able to provoke diverse diseases, including plant maceration due to the production of pectinases disrupting the plant cell wall. To better understand their diversity, a survey of pectinolytic bacteria was performed in brackish lakes of the French region La Camargue near the Mediterranean Sea. The genome of six atypical isolates was sequenced; their size is around 4.8 to 5.0 Mb, including a plasmid of 59 to 61 kb; their G+C values range from 49...
February 21, 2024: Systematic and Applied Microbiology
https://read.qxmd.com/read/38399819/antibacterial-mechanisms-and-antivirulence-activities-of-oridonin-against-pathogenic-aeromonas-hydrophila-as-1-1801
#37
JOURNAL ARTICLE
Lunji Wang, Huijuan Li, Jinhao Chen, Yi Wang, Yuqing Gu, Min Jiu
Aeromonas hydrophila , a Gram-negative bacterium widely found in freshwater environments, acts as a common conditional pathogen affecting humans, livestock, and aquatic animals. In this study, the impact of oridonin, an ent -kaurane diterpenoid compound derived from Rabdosia rubescens , on the virulence factors of A. hydrophila AS 1.1801 and its antibacterial mechanism was elucidated. The minimum inhibitory concentration (MIC) of oridonin against A. hydrophila AS 1.1801 was 100 μg/mL. Oridonin at inhibitory concentrations could significantly increase the electrical conductivity in the supernatant and escalate nucleic acid leakage ( p < 0...
February 19, 2024: Microorganisms
https://read.qxmd.com/read/38399705/the-antimicrobial-resistance-of-enterotoxigenic-escherichia-coli-from-diarrheal-patients-and-the-environment-in-two-geographically-distinct-rural-areas-in-bangladesh-over-the-years
#38
JOURNAL ARTICLE
Fatema-Tuz Johura, Marzia Sultana, Abdus Sadique, Shirajum Monira, David A Sack, Richard Bradley Sack, Munirul Alam, Subhra Chakraborty
Antimicrobial resistance (AMR) is an unprecedented global health challenge, involving the transfer of bacteria and genes between humans and the environment. We simultaneously and longitudinally determined the AMR of enterotoxigenic Escherichia coli (ETEC) strains isolated from diarrheal patients and an aquatic environment over two years from two geographically distinct locations, Coastal Mathbaria and Northern Chhatak in Bangladesh. A total of 60% and 72% of ETEC strains from the patients in Mathbaria and Chhatak, respectively, were multi-drug resistant (MDR) with a high proportion of ETEC resistant to nalidixic acid (80...
January 31, 2024: Microorganisms
https://read.qxmd.com/read/38399687/detection-of-nucleic-acids-of-the-fish-pathogen-yersinia-ruckeri-from-planktonic-and-biofilm-samples-with-a-crispr-cas13a-based-assay
#39
JOURNAL ARTICLE
Iván L Calderón, M José Barros, Nicolás Fernández-Navarro, Lillian G Acuña
Yersinia ruckeri is the cause of hemorrhagic septicemia, known as enteric redmouth disease, in salmonid fish species. This bacterial pathogen can form biofilms on abiotic surfaces of aquaculture settings or even on the surfaces of the fish themselves, contributing to their persistence in the aquatic environment. Detection methods for this and other fish pathogens can be time-consuming and lack specificity and sensitivity, limiting timely monitoring, the treatment of microbial infections, and effective control of their transmission in aquaculture settings...
January 29, 2024: Microorganisms
https://read.qxmd.com/read/38393764/water-and-mosquitoes-as-key-components-of-the-infective-cycle-of-francisella-tularensis-in-europe-a-review
#40
REVIEW
Daniel Herrera-Rodríguez, Sara Jareño-Moreno, Clara Buch-Cardona, François Mougeot, Juan José Luque-Larena, Dolors Vidal
Francisella tularensis is the pathogen of tularemia, a zoonotic disease that have a broad range of hosts. Its epidemiology is related to aquatic environments, particularly in the subspecies holarctica . In this review, we explore the role of water and mosquitoes in the epidemiology of Francisella in Europe. F. tularensis epidemiology has been linked to natural waters, where its persistence has been associated with biofilm and amebas. In Sweden and Finland, the European countries where most human cases have been reported, mosquito bites are a main route of transmission...
February 23, 2024: Critical Reviews in Microbiology
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