Keyword search (4,163 papers available)

"Walsh D" Authored Publications:

Title Authors PubMed ID
1 Isolation of Marine Bacteria through a "Bait" Approach Pakseresht B; Schiffman Z; McLatchie S; Coulombe P; Soullane S; Imfeld A; Gélinas Y; Walsh D; Findlay B; 41297029
CHEMBIOCHEM
2 Cumulative Effects of Watershed Disturbances and Run-of-river Dams on Mercury Cycling: Case Study and Recommendations for Environmental Managers Amyot M; Bilodeau F; Tremblay A; Planas D; Walsh D; Ponton DE; 38775830
BIOLOGY
3 A metagenomic-based study of two sites from the Barbadian reef system Simpson S; Bettauer V; Ramachandran A; Kraemer S; Mahon S; Medina M; Vallès Y; Dumeaux V; Vallès H; Walsh D; Hallett MT; 37009568
BIOLOGY
4 The occurrence of potentially pathogenic fungi and protists in Canadian lakes predicted using geomatics, in situ and satellite-derived variables: Towards a tele-epidemiological approach Oliva A; Garner RE; Walsh D; Huot Y; 34915335
BIOLOGY
5 Giant virus diversity and host interactions through global metagenomics. Schulz F, Roux S, Paez-Espino D, Jungbluth S, Walsh D, Denef VJ, McMahon KD, Konstantinidis KT, Eloe-Fadrosh EA, Kyrpides N, Woyke T 31968354
BIOLOGY
6 Diversity, evolution, and classification of virophages uncovered through global metagenomics. Paez-Espino D, Zhou J, Roux S, Nayfach S, Pavlopoulos GA, Schulz F, McMahon KD, Walsh D, Woyke T, Ivanova NN, Eloe-Fadrosh EA, Tringe SG, Kyrpides NC 31823797
BIOLOGY
7 Start-up of oxygen-limited autotrophic partial nitrification-anammox process for treatment of nitrite-free wastewater in a single-stage hybrid bioreactor. Hosseinpour B, Saborimanesh N, Yerushalmi L, Walsh D, Mulligan CN 31378146
CSFG
8 Pilot-scale application of a single-stage hybrid airlift BioCAST bioreactor for treatment of ammonium from nitrite-limited wastewater by a partial nitrification/anammox process. Saborimanesh N, Walsh D, Yerushalmi L, Arriagada EC, Mulligan CN 31267396
BIOLOGY

 

Title:Isolation of Marine Bacteria through a "Bait" Approach
Authors:Pakseresht BSchiffman ZMcLatchie SCoulombe PSoullane SImfeld AGélinas YWalsh DFindlay B
Link:https://pubmed.ncbi.nlm.nih.gov/41297029/
DOI:10.1139/cjm-2025-0037
Publication:Canadian journal of microbiology
Keywords:
PMID:41297029 Category: Date Added:2025-11-26
Dept Affiliation: CHEMBIOCHEM
1 Concordia University, Department of Chemistry and Biochemistry, Montreal, Canada; bahar.pakseresht@gmail.com.
2 Concordia University, Department of Chemistry and Biochemistry, Montreal, Canada; schz1530@gmail.com.
3 Concordia University, Department of Biology, Montreal, Canada; mclatchiesusan@gmail.com.
4 Concordia University, Department of Chemistry and Biochemistry, Montreal, Quebec, Canada; pascale.coulombe@gmail.com.
5 Concordia University, Department of Chemistry and Biochemistry, Montreal, Quebec, Canada; safiyasoullane@hotmail.com.
6 Concordia University, Department of Chemistry and Biochemistry, Montreal, Quebec, Canada; anicimfeld@gmail.com.
7 Concordia University, Department of Chemistry and Biochemistry, Montreal, Quebec, Canada; yves.gelinas@concordia.ca.
8 Concordia University, Biology, Montreal, Quebec, Canada; david.walsh@concordia.ca.
9 Concordia University, Department of Chemistry and Biochemistry, Montreal, Canada.
10 Concordia University, Department of Biology, Montreal, Canada; brandon.findlay@concordia.ca.

Description:

There is a great divide between the microbes active in natural environments and the organisms that may be grown in a laboratory setting. In this work we set out to cultivate representatives of the marine myxobacterial clade, a highly diverse, largely-uncultured group of Gram-negative bacteria believed to have extensive biosynthetic potential. Sediment samples were collected from the St. Lawrence Estuary and Gulf and the presence of active marine myxobacteria was established through qPCR analysis of 16S rRNA gene and transcript abundances . In the expectation that the marine myxobacteria would exhibit predatory behaviour like their terrestrial counterparts, the sediment samples were then streaked on agar plates that contained common marine bacteria as the sole carbon source. Unexpectedly, in place of myxobacteria we isolated Pseudomonas, Bacillus, and Stenotropomonas spp., among others, revealing a generalized ability for these strains to break down living organic matter and suggesting that "bait" bacteria may be an effective approach for the cultivation of novel marine saprophytes.





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