Canadian journal of microbiology最新文献_第4页

Morchella capensis sp. nov., the Fynbos morel-the first description of an endemic Morchella species from Africa.

IF 1.8 4区生物学

Canadian journal of microbiology Pub Date : 2025-01-01 DOI: 10.1139/cjm-2023-0224

B Van der Merwe, J Williams, E Le Roux, A Van Staden, G Lawrence, K Jacobs

引用次数: 0

BEVA2.0: modular assembly of golden gate-compatible vectors with expanded utility for genetic engineering.

IF 1.8 4区生物学

Canadian journal of microbiology Pub Date : 2025-01-01 DOI: 10.1139/cjm-2024-0246

Barney A Geddes, Riley Williamson, Jake Schumacher, Ahmad Ardi, Garrett Levin, Emily Červenka, Rui Huang, George C diCenzo

引用次数: 0

Diversity and distribution characteristics of myxobacteria in the rhizosphere and nonrhizosphere soils of the halophyte Haloxylon ammodendron in the high saline-alkaline Ebinur Lake Wetland.

IF 1.8 4区生物学

Canadian journal of microbiology Pub Date : 2025-01-01 DOI: 10.1139/cjm-2024-0045

Xiaoyun Qi, Suhui Hou, Wenge Hu, Cheng Ding, Yang Li, Jie Xiong

{"title":"Diversity and distribution characteristics of myxobacteria in the rhizosphere and nonrhizosphere soils of the halophyte Haloxylon ammodendron in the high saline-alkaline Ebinur Lake Wetland.","authors":"Xiaoyun Qi, Suhui Hou, Wenge Hu, Cheng Ding, Yang Li, Jie Xiong","doi":"10.1139/cjm-2024-0045","DOIUrl":"https://doi.org/10.1139/cjm-2024-0045","url":null,"abstract":"This study employed Illumina HiSeq high-throughput sequencing technology to analyze the V4-V5 regions of myxobacterial 16S rRNA in rhizosphere and nonrhizosphere soils of Haloxylon ammodendron in the saline-alkaline wetland of Ebinur Lake, with the aim of investigating the community structure and diversity of myxobacteria. Results indicated that myxobacterial communities in rhizosphere soils exhibited greater diversity and richness compared to nonrhizosphere soils. Soil physicochemical properties, particularly moisture content, were identified as key environmental factors influencing myxobacterial diversity. The halotolerant genus Haliangium was found to be predominant under saline-alkaline conditions. Additionally, myxobacteria demonstrated distinct ecological specificity and environmental adaptability between rhizosphere and nonrhizosphere soils. For example, the genus Enhygromyxa exhibited a negative correlation with soil moisture content in rhizosphere soils but a positive correlation with soil electrical conductivity in nonrhizosphere soils. Co-occurrence network analysis revealed complex interaction patterns among myxobacterial genera and other bacterial genera, with closer interactions observed in rhizosphere soils. This study highlights the importance of environmental factors in regulating microbial community structure and function in saline-alkaline wetlands, providing new insights into the ecological roles and interaction mechanisms of myxobacteria within the ecosystem.","PeriodicalId":9381,"journal":{"name":"Canadian journal of microbiology","volume":"71 ","pages":"1-17"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143673369","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

Antimicrobial resistance in Klebsiella pneumoniae: an overview of common mechanisms and a current Canadian perspective. 肺炎克雷伯氏菌的抗菌药耐药性：常见机制概述和当前加拿大的观点。

IF 1.8 4区生物学

Canadian journal of microbiology Pub Date : 2024-12-01 Epub Date: 2024-08-30 DOI: 10.1139/cjm-2024-0032

Hannah G Braun, Sumudu R Perera, Yannick Dn Tremblay, Jenny-Lee Thomassin

引用次数: 0

Lettuce seed pelleting with Pseudomonas sp. 31-12: plant growth promotion under laboratory and greenhouse conditions. 使用假单胞菌 31-12 对莴苣种子进行颗粒处理：在实验室和温室条件下促进植物生长。

IF 1.8 4区生物学

Canadian journal of microbiology Pub Date : 2024-12-01 Epub Date: 2024-08-08 DOI: 10.1139/cjm-2024-0071

Jakkrapong Kangsopa, Russell K Hynes, Boonmee Siri

{"title":"Lettuce seed pelleting with Pseudomonas sp. 31-12: plant growth promotion under laboratory and greenhouse conditions.","authors":"Jakkrapong Kangsopa, Russell K Hynes, Boonmee Siri","doi":"10.1139/cjm-2024-0071","DOIUrl":"10.1139/cjm-2024-0071","url":null,"abstract":"Plant growth promotion by Pseudomonas sp. 31-12 incorporated into a lettuce seed pelleting matrix was studied. We examined (1) the effect of five rhizosphere derived bacterial strains on green oak lettuce (Lactuca sativa L.) seed germination, root and shoot growth, as a strain selection step for seed coating and seed pelletizing studies, (2) population stability of Pseudomonas sp. 31-12 incorporated into a pelleting matrix on lettuce seed stored three months at 4 °C, and (3) lettuce growth promotion in the laboratory and greenhouse by Pseudomonas sp. 31-12 coated and pelletized seed. A spontaneous streptomycin mutant of Pseudomonas sp. 31-12 (str) was used to determine population size on seed and roots of 15- and 30-day-old lettuce. The population of Pseudomonas sp. 31-12str on coated and pelleted seed decreased from 104 cfu/seed to 103 cfu/seed after 3 months storage at 4 °C. However, the population exceeded 104 cfu/g root dry mass and 105/g root dry mass after 15 days and 30 days in the greenhouse. Leaf fresh mass was significantly increased (P ≤ 0.05) with Pseudomonas sp. 31-12 seed treatment as compared to noninoculated seed. In conclusion, pelletized lettuce seed with Pseudomonas sp. 31-12 promoted growth and yield in the greenhouse.","PeriodicalId":9381,"journal":{"name":"Canadian journal of microbiology","volume":" ","pages":"529-537"},"PeriodicalIF":1.8,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141905928","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

Tracking the trajectory of frankia research through bibliometrics: trends and future directions. 通过文献计量学跟踪法兰克尼亚研究的轨迹：趋势和未来方向。

IF 1.8 4区生物学

Canadian journal of microbiology Pub Date : 2024-12-01 Epub Date: 2024-09-10 DOI: 10.1139/cjm-2024-0030

Ridha Mhamdi, Maher Gtari

{"title":"Tracking the trajectory of frankia research through bibliometrics: trends and future directions.","authors":"Ridha Mhamdi, Maher Gtari","doi":"10.1139/cjm-2024-0030","DOIUrl":"10.1139/cjm-2024-0030","url":null,"abstract":"Frankia represent a unique group of filamentous, sporangia-forming bacteria, renowned for their exceptional capacity to establish symbiotic partnerships with actinorhizal plants. The objective of this paper is to offer quantitative insights into the current state of frankia research and its future potential. A comprehensive bibliometric analysis covering the years 2000-2022 was conducted using Scopus and SciVal. A steady increase in both annual publication and international collaboration has been observed, particularly since 2013. Research performance metrics for the last 5 years (2018-2022) indicate China and India as leaders with high Field-Weighted Citation Impact scores. This analysis highlighted prominent authors, research groups, and the evolving research landscape, suggesting an increasing focus on molecular and genomic aspects. The genomic era has transformed our understanding of frankia biology, highlighting their significance in diverse ecological and agricultural contexts. This study comprehensively maps the evolving landscape of frankia research, emphasizing key milestones that have catalysed international interest in frankia-actinorhizal research, expanding our perception of frankia's capabilities beyond its traditional symbiotic role. As research in this field progresses, a deeper comprehension of frankia-plant interactions, symbiotic signalling, and the intricacies of metabolic pathways holds the promise of revealing innovative techniques for optimizing nitrogen fixation and broadening the spectrum of host plants.","PeriodicalId":9381,"journal":{"name":"Canadian journal of microbiology","volume":" ","pages":"551-564"},"PeriodicalIF":1.8,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142280567","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

Soil microbiomes from the groundnut basin of Senegal contain plant growth-promoting bacteria with potential for crop improvement in arid soils. 塞内加尔落花生盆地的土壤微生物组含有促进植物生长的细菌，具有改良干旱土壤中作物的潜力。

IF 1.8 4区生物学

Canadian journal of microbiology Pub Date : 2024-12-01 Epub Date: 2024-08-21 DOI: 10.1139/cjm-2024-0031

Niokhor Bakhoum, Ethan Humm, Noor Khan, Ann M Hirsch

{"title":"Soil microbiomes from the groundnut basin of Senegal contain plant growth-promoting bacteria with potential for crop improvement in arid soils.","authors":"Niokhor Bakhoum, Ethan Humm, Noor Khan, Ann M Hirsch","doi":"10.1139/cjm-2024-0031","DOIUrl":"10.1139/cjm-2024-0031","url":null,"abstract":"The principal methods to maintain soil fertility in Sahel soils are largely allowing fields to go fallow and manure addition. These methods are not currently sufficient to improve soil fertility. To promote biological amendments, we aimed to understand the plant-growth promoting traits of various soil microbial isolates. The soils collected in different areas in Senegal exhibited a similar eDNA profile of bacteria; the dominant microbes were Firmicutes, followed by Proteobacteria and Actinobacteria. Of 17 isolates identified and tested, the vast majority solubilized rock phosphate and a large number grew on culture medium containing 6% salt, but very few degraded starches or hydrolysed carboxymethyl cellulose or produced siderophores. Upon single inoculation, Peribacillus asahii RC16 and Dietzia cinnamea 55 significantly increased pearl millet growth and yield parameters. For cowpea, plant shoot length was significantly increased by Pseudarthrobacter phenanthrenivorans MKAG7 co-inoculated with Bradyrhizobium elkanii 20TpCR5, and nearly all rhizobacteria tested significantly improved cowpea dry weight and pod weight. Additionally, the double inoculation of Dietzia cinnamea 55 and MKAG7 significantly increased shoot length, dry weight, and seed head weight of pearl millet. These isolates are promising inoculants because they are ecologically-friendly, cost-effective, sustainable, and have fewer negative effects on the soil and its inhabitants.","PeriodicalId":9381,"journal":{"name":"Canadian journal of microbiology","volume":" ","pages":"538-550"},"PeriodicalIF":1.8,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142016458","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

The roles of rabies virus structural proteins in immune evasion and implications for vaccine development. 狂犬病毒结构蛋白在免疫逃避中的作用及对疫苗开发的影响。

IF 1.8 4区生物学

Canadian journal of microbiology Pub Date : 2024-11-01 Epub Date: 2024-09-19 DOI: 10.1139/cjm-2024-0023

Pei-Hua Wang, Li Xing

引用次数: 0

Prairie soil improves wheat establishment and accelerates the developmental transition to flowering compared to agricultural soils. 与农业土壤相比，草原土壤能改善小麦的生长发育，并加快向开花期的过渡。

IF 1.8 4区生物学

Canadian journal of microbiology Pub Date : 2024-11-01 Epub Date: 2024-08-07 DOI: 10.1139/cjm-2023-0237

Renee H Petipas, Cassidy Peru, Janice M Parks, Maren L Friesen, Chandra N Jack

{"title":"Prairie soil improves wheat establishment and accelerates the developmental transition to flowering compared to agricultural soils.","authors":"Renee H Petipas, Cassidy Peru, Janice M Parks, Maren L Friesen, Chandra N Jack","doi":"10.1139/cjm-2023-0237","DOIUrl":"10.1139/cjm-2023-0237","url":null,"abstract":"Less than 1% of native prairie lands remain in the United States. Located in eastern Washington, the rare habitat called Palouse prairie was largely converted to wheat monocropping. With this conversion came numerous physical, chemical, and biological changes to the soil that may ultimately contribute to reduced wheat yields. Here, we explored how wheat (Tritcum aestivum L.) seedling establishment, plant size, and heading, signifying the developmental transition to flowering, were affected by being planted in prairie soil versus agricultural soils. We then sought to understand whether the observed effects were the result of changes to the soil microbiota due to agricultural intensification. We found that prairie soil enhanced both the probability of wheat seedling survival and heading compared to agricultural soil; however, wheat growth was largely unaffected by soil source. We did not detect effects on wheat developmental transitions or phenotype when inoculated with prairie microbes compared with agricultural microbes, but we did observe general antagonistic effects of microbes on plant size, regardless of soil source. This work indicates that agricultural intensification has affected soils in a way that changes early seedling establishment and the timing of heading for wheat, but these effects may not be caused by microbes, and instead may be caused by soil nutrient conditions.","PeriodicalId":9381,"journal":{"name":"Canadian journal of microbiology","volume":" ","pages":"482-491"},"PeriodicalIF":1.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141901029","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

Occurrence and characterization of plasmid-encoded qnr genes in quinolone-resistant bacteria across diverse aquatic environments in southern Ontario. 安大略省南部不同水生环境中抗喹诺酮细菌质粒编码 qnr 基因的出现和特征。

IF 1.8 4区生物学

Canadian journal of microbiology Pub Date : 2024-11-01 Epub Date: 2024-07-31 DOI: 10.1139/cjm-2024-0029

Farhan Yusuf, Saher M Ahmed, Danica Dy, Katherine Baney, Hassan Waseem, Kimberley A Gilbride

{"title":"Occurrence and characterization of plasmid-encoded qnr genes in quinolone-resistant bacteria across diverse aquatic environments in southern Ontario.","authors":"Farhan Yusuf, Saher M Ahmed, Danica Dy, Katherine Baney, Hassan Waseem, Kimberley A Gilbride","doi":"10.1139/cjm-2024-0029","DOIUrl":"10.1139/cjm-2024-0029","url":null,"abstract":"Antimicrobial resistance is an ever-increasing threat. The widespread usage of ciprofloxacin has led to the manifestation of resistance due to chromosomal mutations or the acquisition of plasmid-mediated quinolone resistance (PMQR) traits. Some particular PMQR traits, qnr genes, have been identified globally in clinical and environmental isolates. This study aimed to determine the prevalence of ciprofloxacin-resistant bacteria in aquatic environments in southern Ontario and investigate the extent of dissemination of ciprofloxacin resistance traits among the bacterial communities. We surveyed the prevalence of plasmid encoding qnr genes using a multiplex PCR assay of associated PMQR genes, qnrA, qnrB, and qnrS, on 202 isolates. Despite the absence of significant impacts on minimum inhibitory concentration levels, the presence of qnr genes correlates with heightened resistance to quinolones and nalidixic acid in some isolates. Taxonomic analysis highlights distinct differences in the composition and diversity of ciprofloxacin-sensitive (CipS) and ciprofloxacin-resistant (CipR) populations, with Proteobacteria dominating both groups. Importantly, CipR populations exhibit lower genetic diversity but higher prevalence of multiple antibiotic resistances, suggesting co-selection mechanisms. Co-occurrence analysis highlights significant associations between ciprofloxacin resistance and other antibiotic resistances, implicating complex genetic linkages. The results of our study signified the critical role of environmental monitoring in public health.","PeriodicalId":9381,"journal":{"name":"Canadian journal of microbiology","volume":" ","pages":"492-506"},"PeriodicalIF":1.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141859118","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