Jonathan D. Van Hamme

ORCID: 0000-0001-9471-7616
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About
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Research Areas
  • Microbial bioremediation and biosurfactants
  • Microbial Community Ecology and Physiology
  • Genomics and Phylogenetic Studies
  • Plant-Microbe Interactions and Immunity
  • Biofuel production and bioconversion
  • Ruminant Nutrition and Digestive Physiology
  • Pesticide and Herbicide Environmental Studies
  • Per- and polyfluoroalkyl substances research
  • Petroleum Processing and Analysis
  • Toxic Organic Pollutants Impact
  • Legume Nitrogen Fixing Symbiosis
  • Environmental Chemistry and Analysis
  • Mine drainage and remediation techniques
  • Microbial Metabolic Engineering and Bioproduction
  • Gut microbiota and health
  • Meat and Animal Product Quality
  • Enhanced Oil Recovery Techniques
  • Genetic and phenotypic traits in livestock
  • Mining and Resource Management
  • Planarian Biology and Electrostimulation
  • Environmental DNA in Biodiversity Studies
  • Enzyme-mediated dye degradation
  • Coal and Its By-products
  • Atmospheric chemistry and aerosols
  • Steroid Chemistry and Biochemistry

Thompson Rivers University
2016-2025

Devon Energy (Canada)
2003

University of Waterloo
1999-2002

Bacterial taxonomic community analyses using PCR-amplification of the 16S rRNA gene and high-throughput sequencing has become a cornerstone in microbiology research. To reliably detect members, or operational units (OTUs), that make up bacterial communities, surveys rely on use most informative PCR primers to amplify broad range phylotypes present up-to-date reference databases. However, specific for domain Bacteria were often developed some time ago against database versions are now out...

10.3389/fmicb.2017.00494 article EN cc-by Frontiers in Microbiology 2017-03-28

10.1007/s10295-003-0042-4 article EN Journal of Industrial Microbiology & Biotechnology 2003-05-01

ABSTRACT Steroids are ubiquitous in natural environments and a significant growth substrate for microorganisms. Microbial steroid metabolism is also important some pathogens biotechnical applications. This study delineated the distribution of aerobic catabolism pathways among over 8,000 microorganisms whose genomes available NCBI RefSeq database. Combined analysis bacterial, archaeal, fungal with both hidden Markov models reciprocal BLAST identified 265 putative degraders within only...

10.1128/mbio.00166-16 article EN cc-by mBio 2016-03-09

The rumen is characterised by a complex microbial ecosystem, which particularly active in lipid metabolism. Several studies demonstrated role of diet and breed on bacterial community profile, with the effect metabolic pathways. Despite knowledge achieved metabolism little known about relationship between individual bacteria Therefore, multivariate approach was used to search for possible relationships products several correlation composition assessed 40 beef steers (20 Maremmana 20 Aubrac)...

10.1016/j.animal.2022.100520 article EN cc-by-nc-nd animal 2022-04-22

Metal contaminated soils are increasing worldwide. Metal-tolerant plants growing on metalliferous fascinating genetic and microbial resources. Seeds can vertically transmit endophytic microorganisms that assist next generations to cope with environmental stresses, through yet poorly understood mechanisms. The aims of this study were identify the core seed endophyte microbiome pioneer metallophyte Crotalaria pumila throughout three generations, better understand plant colonisation...

10.3390/ijms19010291 article EN International Journal of Molecular Sciences 2018-01-19

Abstract Pseudoalteromonas is a globally distributed marine-associated genus that can be found in broad range of aquatic environments, including association with macroalgal surfaces where they may take advantage these rich sources polysaccharides. The metabolic systems confer the ability to metabolize this abundant form photosynthetically fixed carbon, however, are not yet fully understood. Through genomics, transcriptomics, microbiology, and specific structure-function studies pathway...

10.1038/s42003-019-0721-y article EN cc-by Communications Biology 2019-12-19

ABSTRACT Methods to enhance crude oil biodegradation by mixed bacterial cultures, for example, (bio)surfactant addition, are complicated the diversity of microbial populations within a given culture. The physical and metabolic interactions between Rhodococcus sp. strain F9-D79 Pseudomonas JA5-B45 were examined during growth on Bow River oil. effects nonionic chemical surfactant, Igepal CO-630 (nonylphenol ethoxylate), also evaluated. Strain grew attached oil-water interface produced mycolic...

10.1128/aem.67.10.4874-4879.2001 article EN Applied and Environmental Microbiology 2001-10-01

The use of rustic cattle is desirable to face challenges brought on by climate change. Maremmana (MA) and Aubrac (AU) are breeds that can be successfully used for sustainable production. In this study, correlations between two rearing systems (feedlot grazing) the rumen microbiota, lipid composition liquor (RL), growth performance MA AU steers were investigated. Bacterial community was characterized high-throughput sequencing 16S rRNA gene amplicons, RL determined measuring fatty acid (FA)...

10.3389/fmicb.2021.652031 article EN cc-by Frontiers in Microbiology 2021-04-29

Abstract To fully comprehend host-microorganism interactions, it is crucial to understand the composition and diversity of microbiome, as well factors that shape these characteristics. We investigated microbiome variation using freshwater planarian Schmidtea mediterranea , an invertebrate model in regeneration biology (eco-)toxicology, by exposing organisms various controlled conditions. The exhibited high variability, with most bacteria belonging Betaproteobacteria. Among diverse microbial...

10.1038/s41598-025-86920-0 article EN cc-by Scientific Reports 2025-02-05

The effects of various hydrocarbon substrates, and a chemical surfactant capable enhancing crude-oil biodegradation, on the community structure mixed-bacterial inoculum were examined in batch culture. Of 1000 TSA-culturable isolates, 68.6% identified at genus level or better by phospholipid fatty acid analysis over 7-day time course experiments. Cultures exposed to 20 g/L Bow River crude oil with without 0.625 Igepal CO-630 (a nonylphenol ethoxylate surfactant), 5 saturates, aromatics, 125...

10.1139/w00-013 article EN Canadian Journal of Microbiology 2000-05-01

Hydrocarbon-degrading bacteria are important resources for use in phytoremediation applications. Yet, many hydrocarbonoclastic strains the genetic information regarding pollutant degradation and detoxification has not been thoroughly revealed. In this study, hydrocarbon-degrading were isolated from a long-term oil-polluted soil Bóbrka, Poland. Pseudomonas spp. was most dominant species. Of all 69 tested laboratory using qualitative biochemical assays, 61% showed capability to diesel as sole...

10.3390/genes10060443 article EN Genes 2019-06-11

Gordonia sp. strain NB4-1Y was isolated from vermicompost using bis-(3-pentafluorophenylpropyl)-sulfide as the sole added sulfur source and found to have a broad capacity for metabolizing organosulfur compounds. is closely related G. desulfuricans metabolize 6 : 2 fluorotelomer sulfonate (6 FTS) 5 3 acid (5 acid) via FTCA), unsaturated FTUCA) Uacid). Given that molecular biochemical basis microbial metabolism of poly- per-fluorinated compounds has yet be examined, we undertook investigate...

10.1099/mic.0.068932-0 article EN Microbiology 2013-06-07

Bioremediation of polluted soils is a promising technique with low environmental impact, which uses soil organisms to degrade contaminants. In this study, 19 bacterial strains isolated from diesel-contaminated were screened for their diesel-degrading potential, biosurfactant (BS) production, and biofilm formation abilities, all desirable characteristics when selecting re-inoculation into hydrocarbon-contaminated soils. Diesel-degradation rates determined in vitro minimal medium diesel as the...

10.1080/15226514.2017.1337065 article EN International Journal of Phytoremediation 2017-06-09

The high global consumption of ibuprofen and its limited elimination by wastewater treatment plants (WWTPs), has led to the contamination aquatic systems this common analgesic metabolites. potentially negative environmental public health effects emerging contaminant have raised concerns, driving demand for technologies. implementation bacteria which mineralize organic contaminants in biopurification used decontaminate water or directly processes WWTPs, is a cheap sustainable means complete...

10.1016/j.envpol.2021.116536 article EN cc-by Environmental Pollution 2021-01-24
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