DNA microarrays were used to examine the transcriptional response of Pseudomonas aeruginosa to anaerobiosis and nitrate. In response to anaerobic growth, 691 transcripts were differentially expressed. Comparisons of P. aeruginosa grown aerobically in the presence or the absence of nitrate showed differential expression of greater than 900 transcripts.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1111847 | PMC |
| http://dx.doi.org/10.1128/IAI.73.6.3764-3772.2005 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Ring A Cleaving Beta-Diketone Hydrolase Is a Key Enzyme of Steroid Degradation in Anaerobic Bacteria.
Environ Microbiol
January 2025
Faculty of Biology-Microbiology, University of Freiburg, Freiburg, Germany.
Bacterial degradation of ubiquitous and persistent steroids such as steroid hormones is important for their removal from the environment. Initial studies of steroid degradation in anaerobic bacteria suggested that ring-cleaving hydrolases are involved in oxygen-independent sterane skeleton degradation. However, the enzymes involved in ring A cleavage of the common intermediate androsta-1,4-diene-3,17-dione have remained unknown.
View Article and Find Full Text PDFMicroaerobic biodegradation of aromatic hydrocarbon mixtures: strategies for efficient nitrate and oxygen dosage.
Appl Microbiol Biotechnol
January 2025
Department of Environmental Technology, Wageningen University & Research, P.O. Box 17, 6700 AA, Wageningen, The Netherlands.
The biodegradation of organic aromatic compounds in subsurface environments is often hindered by limited dissolved oxygen. While oxygen supplementation can enhance in situ biodegradation, it poses financial and technical challenges. This study explores introducing low-oxygen concentrations in anaerobic environments for efficient contaminant removal, particularly in scenarios where coexisting pollutants are present.
View Article and Find Full Text PDFSecondary transport mechanisms in amino acid fed enhanced biological phosphorus removal.
Chemosphere
February 2025
Gerald May Department of Civil, Construction, and Environmental Engineering, The University of New Mexico, Albuquerque, NM, 87131, United States. Electronic address:
Enhanced biological phosphorus removal (EBPR) water resource recovery facilities (WRRFs) often fail to meet phosphorus discharge permit limits, indicating a need to improve EBPR to reduce environmental phosphorus discharges. EBPR designs are largely based on the Accumulibacter polyphosphate accumulating organism (PAO) metabolism, while understudied Tetrasphaera PAOs are equally important to EBPR in many facilities worldwide. Anaerobic organic carbon competition is believed to be a key driver of EBPR reliability.
View Article and Find Full Text PDFBioaugmentation to enhance degradation of acetochlor and pretilachlor in water and sediment under anaerobic conditions.
FEMS Microbiol Lett
January 2025
The department of Agriculture, Natural Resources and Environment, Dong Thap University, 783 Pham Huu Lau Street, Cao Lanh City, Dong Thap Province 870000, Viet Nam.
Chloroacetamide herbicides are widely used to control weeds globally. In this study, three acetochlor-degrading mixed cultures using nitrate, sulfate, and ferric iron as electron acceptors were isolated and determined for their degradation under anaerobic conditions. The degradation rates of all mixed pure cultures in a mineral medium were not much different at 1 µM, while the rates at 50 µM were in the order: mixed culture using nitrate > sulfate > ferric iron as electron acceptors, giving 6.
View Article and Find Full Text PDFMulti-faceted effects and mechanisms of granular activated carbon to enhance anaerobic ammonium oxidation (anammox) for nitrogen removal from wastewater.
Bioresour Technol
February 2025
Centre for Environmental Health and Engineering (CEHE), Department of Civil and Environmental Engineering, University of Surrey, Guildford GU2 7XH, UK. Electronic address:
Nitrogen removal via anammox is efficient but challenged by their slow growth. Adding granular activated carbon (GAC) increased the total nitrogen removal rate to 66.99 g-N/m/day, compared to 50.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!