Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Antimicrobial resistance (2)
- Multidrug resistance (2)
- ATP (1)
- Antibiotic resistance genes (1)
- Antibiotic resistant bacteria (1)
-
- Antibiotics (1)
- Bacterioplankton carbon demand (1)
- Bioavailability (1)
- Biofilm (1)
- Biological carbon pump (1)
- Brachypodium (1)
- Deepwater Horizon oil spill (1)
- Dissolved organic carbon (1)
- E. coli (1)
- Functional redundancy (1)
- Membrane potential (1)
- Metagenome (1)
- Microbiome (1)
- Microcosm (1)
- MsaABCR (1)
- NAAMES (1)
- Persister cells (1)
- Pseudomonas (1)
- Rhizosphere (1)
- Root exudates (1)
- Staphylococcus aureus (1)
- Transcriptome (1)
- Wastewater treatment plant (1)
- Watershed (1)
Articles 1 - 6 of 6
Full-Text Articles in Life Sciences
The Seasonal Flux And Fate Of Dissolved Organic Carbon Through Bacterioplankton In The Western North Atlantic, Nicholas Baetge, Michael J. Behrenfeld, James Fox, Kimberly H. Halsey, Kristina D.A. Mojica, Anai Novoa, Brandon M. Stephens, Craig A. Carlson
The Seasonal Flux And Fate Of Dissolved Organic Carbon Through Bacterioplankton In The Western North Atlantic, Nicholas Baetge, Michael J. Behrenfeld, James Fox, Kimberly H. Halsey, Kristina D.A. Mojica, Anai Novoa, Brandon M. Stephens, Craig A. Carlson
Faculty Publications
The oceans teem with heterotrophic bacterioplankton that play an appreciable role in the uptake of dissolved organic carbon (DOC) derived from phytoplankton net primary production (NPP). As such, bacterioplankton carbon demand (BCD), or gross heterotrophic production, represents a major carbon pathway that influences the seasonal accumulation of DOC in the surface ocean and, subsequently, the potential vertical or horizontal export of seasonally accumulated DOC. Here, we examine the contributions of bacterioplankton and DOM to ecological and biogeochemical carbon flow pathways, including those of the microbial loop and the biological carbon pump, in the Western North Atlantic Ocean (∼39–54°N along ∼40°W) …
Increased Antimicrobial And Multidrug Resistance Downstream Of Wastewater Treatment Plants In An Urban Watershed, Maitreyee Mukherjee, Edward Laird, Terry J. Gentry, John P. Brooks, Raghupathy Karthikeyan
Increased Antimicrobial And Multidrug Resistance Downstream Of Wastewater Treatment Plants In An Urban Watershed, Maitreyee Mukherjee, Edward Laird, Terry J. Gentry, John P. Brooks, Raghupathy Karthikeyan
Faculty Publications
Development and spread of antimicrobial resistance (AMR) and multidrug resistance (MDR) through propagation of antibiotic resistance genes (ARG) in various environments is a global emerging public health concern. The role of wastewater treatment plants (WWTPs) as hot spots for the dissemination of AMR and MDR has been widely pointed out by the scientific community. In this study, we collected surface water samples from sites upstream and downstream of two WWTP discharge points in an urban watershed in the Bryan-College Station (BCS), Texas area, over a period of nine months. E. coli isolates were tested for resistance to ampicillin, tetracycline, sulfamethoxazole, …
Elevated Incidences Of Antimicrobial Resistance And Multidrug Resistance In The Maumee River (Ohio, Usa), A Major Tributary Of Lake Erie, Maitreyee Mukherjee, Leah Marie, Cheyenne Liles, Nadia Mustafa, George Bullerjahn, Terry J. Gentry, John P. Brooks
Elevated Incidences Of Antimicrobial Resistance And Multidrug Resistance In The Maumee River (Ohio, Usa), A Major Tributary Of Lake Erie, Maitreyee Mukherjee, Leah Marie, Cheyenne Liles, Nadia Mustafa, George Bullerjahn, Terry J. Gentry, John P. Brooks
Faculty Publications
Maumee River, the major tributary in the western basin of Lake Erie, serves as one of major sources of freshwater in the area, supplying potable, recreational, and industrial water. In this study we collected water samples from four sites in the Maumee River Bay between 2016–2017 and E. coli was isolated, enumerated, and analyzed for antimicrobial resistance (AMR) and multidrug resistance (MDR). Strikingly, 95% of the total isolates were found to be resistant to at least one antibiotic. A very high resistance to the drugs cephalothin (95.3%), ampicillin (38.3%), tetracycline (8.8%), gentamicin (8.2%), ciprofloxacin (4.2%), cefoperazone (4%), and sulfamethoxazole (1.5%) …
The Msaabcr Operon Regulates Persister Formation By Modulating Energy Metabolism In Staphylococcus Aureus, Shanti Pandey, Gyan S. Sahukhal, Mohamed O. Elasri
The Msaabcr Operon Regulates Persister Formation By Modulating Energy Metabolism In Staphylococcus Aureus, Shanti Pandey, Gyan S. Sahukhal, Mohamed O. Elasri
Faculty Publications
Staphylococcus aureus is a major human pathogen that causes chronic, systemic infections, and the recalcitrance of these infections is mainly due to the presence of persister cells, which are a bacterial subpopulation that exhibits extreme, yet transient, antibiotic tolerance accompanied by a transient halt in growth. However, upon cessation of antibiotic treatment, a resumption in growth of persister cells causes recurrence of infections and treatment failure. Previously, we reported the involvement of msaABCR in several important staphylococcal phenotypes, including the formation of persister cells. Additionally, observations of the regulation of several metabolic genes by the msaABCR operon in transcriptomics and …
Root Exudates Alter The Expression Of Diverse Metabolic, Transport, Regulatory, And Stress Response Genes In Rhizosphere Pseudomonas, Olga V. Mavrodi, Janiece R. Mcwilliams, Jacob O. Peter, Anna Berim, Karl A. Hassan, Liam D.H. Elbourne, Melissa K. Letourneau, David R. Gang, Ian T. Paulsen, David M. Weller, Linda S. Thomashow, Alex S. Flynt, Dmitri V. Mavrodi
Root Exudates Alter The Expression Of Diverse Metabolic, Transport, Regulatory, And Stress Response Genes In Rhizosphere Pseudomonas, Olga V. Mavrodi, Janiece R. Mcwilliams, Jacob O. Peter, Anna Berim, Karl A. Hassan, Liam D.H. Elbourne, Melissa K. Letourneau, David R. Gang, Ian T. Paulsen, David M. Weller, Linda S. Thomashow, Alex S. Flynt, Dmitri V. Mavrodi
Faculty Publications
Plants live in association with microorganisms that positively influence plant development, vigor, and fitness in response to pathogens and abiotic stressors. The bulk of the plant microbiome is concentrated belowground at the plant root-soil interface. Plant roots secrete carbon-rich rhizodeposits containing primary and secondary low molecular weight metabolites, lysates, and mucilages. These exudates provide nutrients for soil microorganisms and modulate their affinity to host plants, but molecular details of this process are largely unresolved. We addressed this gap by focusing on the molecular dialog between eight well-characterized beneficial strains of the Pseudomonas fluorescens group and Brachypodium distachyon, a model …
Microbial Functional Responses In Marine Biofilms Exposed To Deepwater Horizon Spill Contaminants, Rachel L. Mugge, Jennifer L. Salerno, Leila J. Hamdan
Microbial Functional Responses In Marine Biofilms Exposed To Deepwater Horizon Spill Contaminants, Rachel L. Mugge, Jennifer L. Salerno, Leila J. Hamdan
Faculty Publications
Marine biofilms are essential biological components that transform built structures into artificial reefs. Anthropogenic contaminants released into the marine environment, such as crude oil and chemical dispersant from an oil spill, may disrupt the diversity and function of these foundational biofilms. To investigate the response of marine biofilm microbiomes from distinct environments to contaminants and to address microbial functional response, biofilm metagenomes were analyzed from two short-term microcosms, one using surface seawater (SSW) and the other using deep seawater (DSW). Following exposure to crude oil, chemical dispersant, and dispersed oil, taxonomically distinct communities were observed between microcosms from different source …