Canadian journal of microbiology最新文献

Streptococcus suis serovar 9 responses to elevated temperature and co-culture with Glaesserella parasuis. 猪链球菌血清型9对高温和副猪小芽孢杆菌共培养的反应。

IF 1.8 4区生物学

Canadian journal of microbiology Pub Date : 2025-05-07 DOI: 10.1139/cjm-2024-0180

Brandon Spoja, Adina R Bujold, Janet MacInnes, Nicole Ricker

{"title":"Streptococcus suis serovar 9 responses to elevated temperature and co-culture with Glaesserella parasuis.","authors":"Brandon Spoja, Adina R Bujold, Janet MacInnes, Nicole Ricker","doi":"10.1139/cjm-2024-0180","DOIUrl":"https://doi.org/10.1139/cjm-2024-0180","url":null,"abstract":"Streptococcus suis and Glaesserella parasuis are commensal organisms that can shift from a benign to pathogenic state and cause severe disease in swine. We hypothesized that a change in host temperature and/or interactions with G. parasuis could impact S. suis growth dynamics. We compared phenotypic properties of a clinical S. suisserovar 9 strain (SS9C) with clinical serovar 2 and healthy serovar 9 isolates grown at 37°C and 41°C. We further investigated how co-culturing with G. parasuis affected biofilm formation of SS9C. Crystal violet staining indicated that SS9C produced significantly more biofilm than the other strains when grown at 37°C; this difference was amplified at 41°C. However, cell counts did not increase at the higher temperature. Biofilms of SS9C at 37°C and 41°C were unaffected by DNase I digestion, while other strains were both susceptible at 41°C. All biofilms were susceptible to proteinase K and α-amylase digestion at both temperatures. We showed that growth at 41°C increased biofilm formation and shifted the phenotype of SS9C; however, neither increased temperature nor co-culture with G. parasuis increased planktonic or sessile cell counts. Our study suggests that increased temperature in the host may be an important factor in understanding S. suis disease development.","PeriodicalId":9381,"journal":{"name":"Canadian journal of microbiology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143972444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Food-borne Microbes Influence Conjugative Transfer of Antimicrobial Resistance Plasmids in Pre-disturbed Gut Microbiome. 食源性微生物影响预扰动肠道微生物群中抗菌素耐药性质粒的共轭转移。

IF 1.8 4区生物学

Canadian journal of microbiology Pub Date : 2025-05-02 DOI: 10.1139/cjm-2024-0168

Marie Ottenbrite, Gokhan Yilmaz, Maria Chan, John Devenish, Mingsong Kang, Hanhong Dan, Calvin Lau, Sabrina Capitani, Catherine D Carrillo, Kyrylo Bessonov, John Nash, Edward Topp, Jiewen Guan

{"title":"Food-borne Microbes Influence Conjugative Transfer of Antimicrobial Resistance Plasmids in Pre-disturbed Gut Microbiome.","authors":"Marie Ottenbrite, Gokhan Yilmaz, Maria Chan, John Devenish, Mingsong Kang, Hanhong Dan, Calvin Lau, Sabrina Capitani, Catherine D Carrillo, Kyrylo Bessonov, John Nash, Edward Topp, Jiewen Guan","doi":"10.1139/cjm-2024-0168","DOIUrl":"https://doi.org/10.1139/cjm-2024-0168","url":null,"abstract":"Ingestion of antibiotic-resistant bacteria following antibiotic treatments may lead to the transfer of antimicrobial resistance genes (ARGs) within a disturbed gut microbiota. However, it remains unclear if and how microbes present in food matrices influence ARG transfer. Thus, a previously established mouse model, which demonstrated the conjugative transfer of a multi-drug resistance plasmid (pIncA/C) from Salmonella Heidelberg (donor) to S. Typhimurium (recipient), was used to assess the effects of food-borne microbes derived from fresh carrots on pIncA/C transfer. Mice were pre-treated with ampicillin, streptomycin, sulfamethazine, or left untreated as a control to facilitate bacterial colonization. Contrary to previous findings where high-density colonization of the donor and recipient bacteria occurred in the absence of food-borne microbes, the presence of these microbes resulted in a low abundance of S. Typhimurium and no detection of S. Typhimurium transconjugants in the fecal samples from any of the mice. However, in mice pre-treated with streptomycin, a significant reduction in microbial species richness allowed for the significant enrichment of Enterobacteriaceae and pIncA/C transfer to bacteria from the genera Escherichia, Enterobacter, Citrobacter, and Proteus. These findings suggest that food-borne microbes may enhance ARG dissemination by influencing the population dynamics of bacterial hosts within a pre-disturbed gut microbiome.","PeriodicalId":9381,"journal":{"name":"Canadian journal of microbiology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143974154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-Throughput Sequencing Reveals Microbial Community Dynamics in Two Treatment Systems for Oil Field-Produced Water. 高通量测序揭示了两种油田采出水处理系统中的微生物群落动态。

IF 1.8 4区生物学

Canadian journal of microbiology Pub Date : 2025-04-30 DOI: 10.1139/cjm-2024-0202

Yi Li, Shuo Han, Xiangwei He

{"title":"High-Throughput Sequencing Reveals Microbial Community Dynamics in Two Treatment Systems for Oil Field-Produced Water.","authors":"Yi Li, Shuo Han, Xiangwei He","doi":"10.1139/cjm-2024-0202","DOIUrl":"https://doi.org/10.1139/cjm-2024-0202","url":null,"abstract":"Petroleum-associated water harbors diverse microbial communities, including hydrocarbon-degrading bacteria, sulfate-reducing bacteria, and methanogenic archaea. The growth and metabolism of these organisms, as well as their community composition, can affect various aspects of oil field development and oil produced water treatment. In this study, Illumina-based 16S rRNA gene sequencing was used to analyze the microbial community structures of oilfield produced water processed at two treatment stations and subjected to different treatment protocols. Significant differences in microbial community α-diversity and richness resulted from the different treatment protocols. The treatment of oil produced water effectively reduced the oil content, accompanied by the a reduction in Desulfobacterota. Proteobacteria was the dominant phylum in oil produced water; its core presence, along with Patescibacteria and Desulfobacterota, was identified in a co-occurrence network analysis of the microbial community. Redundancy analysis showed significant positive correlations between microbial community diversity and the oil and suspended solids contents of the oil produced water, highlighting the role of treatment protocols in shaping both microbial composition and water characteristics. Thus, this study provides potential insights into the processes of souring in oil fields and contributes to the theoretical understanding of oil-produced water treatment, which may inform future optimization of treatment protocols.","PeriodicalId":9381,"journal":{"name":"Canadian journal of microbiology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143974872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigating the occurrence of antimicrobial resistance in the environment in Canada: A scoping review. 调查加拿大环境中抗菌素耐药性的发生：范围审查。

IF 1.8 4区生物学

Canadian journal of microbiology Pub Date : 2025-04-25 DOI: 10.1139/cjm-2024-0189

Manuel Alejandro Pérez Maldonado, Daniel Ofori-Darko, Vanessa Nichols, Jessica French, Kelsey Spence, Richard Reid-Smith, Jane Parmley

{"title":"Investigating the occurrence of antimicrobial resistance in the environment in Canada: A scoping review.","authors":"Manuel Alejandro Pérez Maldonado, Daniel Ofori-Darko, Vanessa Nichols, Jessica French, Kelsey Spence, Richard Reid-Smith, Jane Parmley","doi":"10.1139/cjm-2024-0189","DOIUrl":"https://doi.org/10.1139/cjm-2024-0189","url":null,"abstract":"Antimicrobial resistance is an environmental, agricultural, and public health problem that is impacting the health of humans and animals. The role of the environment as a source of and transmission pathway for antibiotic resistant bacteria and antibiotic resistance genes is a topic of increasing interest that, to date, has received limited attention. This study aimed to describe the sources and possible pathways contributing to antimicrobial resistance dissemination through bioaerosols, water, and soil in Canada using a scoping review methodology and systems thinking approach. A systems map was created to describe the occurrence and relationships between sources and pathways for antimicrobial resistance dissemination through water, soil, and bioaerosols. The map guided development of the scoping review protocol, specifically the keywords searched and what data were extracted from the included studies. In total, 103 studies of antimicrobial resistance in water, 67 in soil and 12 in air were identified. Studies to detect the presence of antimicrobial resistance genes have mainly been conducted at wastewater treatment plants and commercial animal livestock facilities. We also identified elements in the systems map with little or no data available (e.g., retail) that need to be investigated further to have a better understanding of antimicrobial resistance dissemination through different Canadian environments.","PeriodicalId":9381,"journal":{"name":"Canadian journal of microbiology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143966425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rapid identification of Fusarium species causing head blight in Canada using MALDI-TOF mass spectrometry. 用MALDI-TOF质谱法快速鉴定加拿大引起头疫病的镰刀菌。

IF 1.8 4区生物学

Canadian journal of microbiology Pub Date : 2025-04-25 DOI: 10.1139/cjm-2025-0035

Shimosh Kurera, Bhaktiben Patel, Tehreem Ashfaq, Maria Eckhardt, Janice Bamforth, Niradha Withana Gamage, Gurcharn Singh Brar, Linda J Harris, Maria Antonia Henriquez, Rajagopal Subramaniam, Xiben Wang, Zamir Punja, Curtis Pozniak, Matthew G Bakker, Sean Walkowiak

{"title":"Rapid identification of Fusarium species causing head blight in Canada using MALDI-TOF mass spectrometry.","authors":"Shimosh Kurera, Bhaktiben Patel, Tehreem Ashfaq, Maria Eckhardt, Janice Bamforth, Niradha Withana Gamage, Gurcharn Singh Brar, Linda J Harris, Maria Antonia Henriquez, Rajagopal Subramaniam, Xiben Wang, Zamir Punja, Curtis Pozniak, Matthew G Bakker, Sean Walkowiak","doi":"10.1139/cjm-2025-0035","DOIUrl":"https://doi.org/10.1139/cjm-2025-0035","url":null,"abstract":"Fusarium head blight (FHB) is a limitation to grain production and can be caused by several different Fusarium species. We evaluated the ability of matrix-assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF MS) to perform species identifications. The method generates a unique peptide mass fingerprint (PMF) for each sample that can be matched to a reference library. We first created a reference library of PMF profiles for Fusarium species from across Canada. Then, we tested the library to perform identifications using two validation panels. The first panel consisted of 820 fungal isolates from wheat (2021-2023 harvest years) and the second was 74 fungal isolates from oat and barley (2022 harvest year). The species identity of samples from the validation panels was confirmed with high-throughput quantitative PCR (HT-qPCR) using species-specific DNA markers. The first validation panel was mostly F. graminearum and there was 95% overlap between the MALDI-TOF MS and DNA-based identifications. The second panel was mostly F. poae and the identifications from the two methods had 86% overlap. Our findings indicate that MALDI-TOF MS biotyping is sensitive enough to identify Fusarium strains to their species complexes and certain Fusarium strains to the species level.","PeriodicalId":9381,"journal":{"name":"Canadian journal of microbiology","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143973324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction: Characterization and whole-genome sequencing of an extreme arsenic tolerant Citrobacter freundii SRS1 strain isolated from Savar area in Bangladesh. 更正：从孟加拉国Savar地区分离的一种极端耐砷弗氏柠檬酸杆菌SRS1菌株的鉴定和全基因组测序。

IF 1.8 4区生物学

Canadian journal of microbiology Pub Date : 2025-01-01 Epub Date: 2024-12-17 DOI: 10.1139/cjm-2024-0195

Mohammed Jafar Uddin, Farhana Haque, Ishrat Jabeen, Sabbir R Shuvo

引用次数: 0

Development and evaluation of a sensitive approach for detection and recovery of third-generation cephalosporin- and carbapenem-resistant Enterobacterales from ready-to-eat frozen stone fruit. 开发和评估从即食冷冻核果中检测和回收耐第三代头孢菌素和碳青霉烯类肠杆菌的灵敏方法。

IF 1.8 4区生物学

Canadian journal of microbiology Pub Date : 2025-01-01 DOI: 10.1139/cjm-2024-0210

Adeeb Nasta, Ashley L Cooper, Irelynd V Tackabury, Chloe Anastasiadis, Calvin Ho-Fung Lau, Liam P Brown, Myron L Smith, Sandeep Tamber, Catherine D Carrillo

{"title":"Development and evaluation of a sensitive approach for detection and recovery of third-generation cephalosporin- and carbapenem-resistant Enterobacterales from ready-to-eat frozen stone fruit.","authors":"Adeeb Nasta, Ashley L Cooper, Irelynd V Tackabury, Chloe Anastasiadis, Calvin Ho-Fung Lau, Liam P Brown, Myron L Smith, Sandeep Tamber, Catherine D Carrillo","doi":"10.1139/cjm-2024-0210","DOIUrl":"10.1139/cjm-2024-0210","url":null,"abstract":"Antimicrobial resistance (AMR) is a global public health threat, but the role of foods in its dissemination is poorly understood. We examined the incidence of foodborne bacteria carrying AMR genes considered high-priority research targets by the World Health Organization. Frozen, ready-to-eat, avocado, coconut, mango, and peach (n = 161) were tested for bacteria encoding extended-spectrum β-lactamases (ESBLs) and carbapenemases. Over 600 presumptive-positive isolates were recovered and analyzed with a pooled sequencing (Pool-seq) strategy. Coconut samples exhibited the highest bacterial loads and prevalence/diversity of AMR genes. Isolates harbouring the β-lactamase genes blactx-m, blatem, and blashv, identified in 14 coconut and 2 mango samples, were further characterized by whole-genome sequencing and antimicrobial susceptibility testing. The most common gene was blactx-m-15, detected in 20 unique strains. Two carbapenemase-producing strains were isolated from coconut: Enterobacter roggenkampii encoding blandm-1 and Escherichia coli encoding blandm-5. Subsequent quantitative PCR (qPCR) analysis of enrichments for blactx-m/blandm indicated a potentially higher prevalence of these genes than observed by colony screening. This study presents a practical method for recovering ESBL- and carbapenemase-producing bacteria from foods. Mapping their distribution in food products is crucial to assessing the role of foods in the global spread of AMR and developing effective public health interventions.","PeriodicalId":9381,"journal":{"name":"Canadian journal of microbiology","volume":" ","pages":"1-18"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143498289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Interactions between common scab-inducing strains on potato suberin. 马铃薯单宁上常见疮痂诱导菌株之间的相互作用。

IF 1.8 4区生物学

Canadian journal of microbiology Pub Date : 2025-01-01 DOI: 10.1139/cjm-2024-0242

Mario Khalil, Iauhenia Isayenka, Rebeca Padilla-Reynaud, Sylvain Lerat, Carole Beaulieu

{"title":"Interactions between common scab-inducing strains on potato suberin.","authors":"Mario Khalil, Iauhenia Isayenka, Rebeca Padilla-Reynaud, Sylvain Lerat, Carole Beaulieu","doi":"10.1139/cjm-2024-0242","DOIUrl":"10.1139/cjm-2024-0242","url":null,"abstract":"Potato tuber periderm is armored with suberin, that consists of two domains, an aliphatic domain composed of fatty acid polyesters and an aromatic domain composed of cinnamic acids. Streptomyces scabies 87.22, a predominant causal agent of potato common scab, was compared for adaptation to tuber suberin with Streptomyces acidiscabies ATCC 49003 and Streptomyces turgidiscabies Car8 belonging to emerging pathogenic species. Streptomyces scabies 87.22 showed higher growth in the suberin supplemented medium than the two other strains. When co-cultured in a rich nutrient medium, S. acidiscabies ATCC 49003 produced the antibiotic oxanthromicin, which inhibited growth and mycelium development of the other strains. Exposure of S. scabies 87.22 and S. acidiscabies ATCC 49003 to suberin was accompanied by the secretion of enzymes degrading cellulose, hemicellulose, fatty acids, and glycerol derivatives. Compared to the two other strains, S. scabies 87.22 showed higher esterase activity in suberin-supplemented medium and strong induction of cellulase gene expression. Both S. acidiscabies ATCC 49003 and S. turgidiscabies Car8 exhibited a poor utilization of trans-ferulic and p-coumaric acids, suggesting almost no ability to degrade the aromatic moiety of suberin. This work suggests that S. scabies 87.22 is better adapted to the potato periderm degradation than the emerging pathogens. The elucidation of pathogenic Streptomyces strains interaction may contribute to the improvement of ecologically oriented agronomic strategies for common scab management.","PeriodicalId":9381,"journal":{"name":"Canadian journal of microbiology","volume":" ","pages":"1-15"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143630201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

From patterns to prediction: machine learning and antifungal resistance biomarker discovery. 从模式到预测：机器学习和抗真菌耐药性生物标志物的发现。

IF 1.8 4区生物学

Canadian journal of microbiology Pub Date : 2025-01-01 DOI: 10.1139/cjm-2024-0248

Veronica Thorn, Jianping Xu

{"title":"From patterns to prediction: machine learning and antifungal resistance biomarker discovery.","authors":"Veronica Thorn, Jianping Xu","doi":"10.1139/cjm-2024-0248","DOIUrl":"https://doi.org/10.1139/cjm-2024-0248","url":null,"abstract":"Fungal pathogens significantly impact human health, agriculture, and ecosystems, with infections leading to high morbidity and mortality, especially among immunocompromised individuals. The increasing prevalence of antifungal resistance (AFR) exacerbates these challenges, limiting the effectiveness of current treatments. Identifying robust biomarkers associated AFR could accelerate targeted diagnosis, shorten decision time for treatment strategies, and improve patient health. This paper examines traditional avenues of AFR biomarker detection, contrasting them with the increasingly effective role of machine learning (ML) in advancing diagnostic and therapeutic strategies. The integration of ML with technologies such as mass spectrometry, molecular dynamics, and various omics-based approaches often results in the discovery of diverse and novel resistance biomarkers. ML's capability to analyse complex data patterns enhances the identification of resistance biomarkers and potential drug targets, offering innovative solutions to AFR management. This paper highlights the importance of interdisciplinary approaches and continued innovation in leveraging ML to combat AFR, aiming for more effective and targeted treatments for fungal infections.","PeriodicalId":9381,"journal":{"name":"Canadian journal of microbiology","volume":"71 ","pages":"1-13"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143954560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A pilot study on the effects of in-feed probiotic Lactobacillus rhamnosus ATCC 53103 (LGG) on vaccinated Atlantic salmon (Salmo salar): microbiomes and Aeromonas salmonicida challenge resilience. 饲料中添加鼠李糖乳杆菌ATCC 53103 （LGG）对接种大西洋鲑鱼（Salmo salar）微生物组和杀沙门氏气单胞菌抗性影响的初步研究

IF 1.8 4区生物学

Canadian journal of microbiology Pub Date : 2025-01-01 Epub Date: 2025-01-17 DOI: 10.1139/cjm-2024-0130

Natalia Lorenc, Steven Leadbeater, Josh Wang, Jennifer Ronholm, Xiaoji Liu

{"title":"A pilot study on the effects of in-feed probiotic Lactobacillus rhamnosus ATCC 53103 (LGG) on vaccinated Atlantic salmon (Salmo salar): microbiomes and Aeromonas salmonicida challenge resilience.","authors":"Natalia Lorenc, Steven Leadbeater, Josh Wang, Jennifer Ronholm, Xiaoji Liu","doi":"10.1139/cjm-2024-0130","DOIUrl":"10.1139/cjm-2024-0130","url":null,"abstract":"The use of probiotics is an alternative approach to mitigate the proliferation of antimicrobial resistance in aquaculture. In our study, we examined the effects of Lactobacillus rhamnosus GG (ATCC 53103, LGG) delivered in-feed on the weight, length, skin mucus, and faecal microbiomes of Atlantic salmon. We also challenged the salmon with Aeromonas salmonicida 2004-05MF26 (Asal2004) and assessed the mortality. Our results showed no significant change (P > 0.05) in weight or length of Atlantic salmon or their resilience to Asal2004 infection after LGG feeding. Infection changed significantly the skin mucus and faecal microbiomes: Clostridium sensu stricto increased from 3.14% to 9.20% in skin mucus and 1.39% to 3.74% in faeces (P < 0.05). Aeromonas increased from 0.02% to 0.60% in faeces (P < 0.05). Photobacterium increased from not detected (0%) to 52.16% (P < 0.01) and Aliivibrio decreased from 67.21% to 0.71% in faeces (P < 0.01). After infection, Lactococcus (9.93%) and Lactobacillus (2.11%) in skin mucus of the LGG group were significantly higher (P < 0.05) than in the skin mucus from the rest of the groups (4.14% and 1.08%, respectively). In conclusion, LGG feeding did not further increase the resilience of vaccinated Atlantic salmon. Asal2004 infection had much greater impact on skin mucus and faecal microbiomes than LGG feeding.","PeriodicalId":9381,"journal":{"name":"Canadian journal of microbiology","volume":" ","pages":"1-10"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143000693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0