Barbara MacGregor

1991 …2018
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Research Output 1991 2018

2018
4 Citations (Scopus)

Filamentous giant Beggiatoaceae from the Guaymas Basin are capable of both denitrification and dissimilatory nitrate reduction to ammonium

Schutte, C. A., Teske, A., MacGregor, B., Salman-Carvalho, V., Lavik, G., Hach, P. & de Beer, D., Aug 1 2018, In : Applied and environmental microbiology. 84, 15, e02860-17.

Research output: Contribution to journalArticle

Denitrification
nitrate reduction
Ammonium Compounds
Sulfur
denitrification
2016
14 Citations (Scopus)

Distinct bacterial communities in surficial seafloor sediments following the 2010 deepwater horizon blowout

Yang, T., Speare, K., McKay, L., MacGregor, B., Joye, S. B. & Teske, A., Sep 13 2016, In : Frontiers in Microbiology. 7, SEP, 1384.

Research output: Contribution to journalArticle

Oils
Snow
Hydrocarbons
Petroleum Pollution
Sulfates
19 Citations (Scopus)

Microbial communities in methane- and short chain alkane-rich hydrothermal sediments of Guaymas Basin

Dowell, F., Cardman, Z., Dasarathy, S., Kellermann, M. Y., Lipp, J. S., Ruff, S. E., Biddle, J. F., McKay, L. J., MacGregor, B., Lloyd, K. G., Albert, D. B., Mendlovitz, H., Hinrichs, K. U. & Teske, A., Jan 1 2016, In : Frontiers in Microbiology. 7, JAN, 00017.

Research output: Contribution to journalArticle

Alkanes
Methane
Sulfates
Archaea
Sulfides
5 Citations (Scopus)

Phylogeography, salinity adaptations and metabolic potential of the candidate division KB1 bacteria based on a partial single cell genome

Nigro, L. M., Hyde, A. S., MacGregor, B. & Teske, A., Aug 22 2016, In : Frontiers in Microbiology. 7, AUG, 1266.

Research output: Contribution to journalArticle

Gulf of Mexico
Phylogeography
Osmoregulation
Betaine
Physiological Stress
18 Citations (Scopus)

The Guaymas Basin hiking guide to hydrothermal mounds, chimneys, and microbial mats: Complex seafloor expressions of subsurface hydrothermal circulation

Teske, A., De Beer, D., McKay, L. J., Tivey, M. K., Biddle, J. F., Hoer, D., Lloyd, K. G., Lever, M. A., Røy, H., Albert, D. B., Mendlovitz, H. P. & MacGregor, B., Feb 18 2016, In : Frontiers in Microbiology. 7, FEB, 75.

Research output: Contribution to journalArticle

Hot Temperature
Ecosystem
Temperature
Surveys and Questionnaires
Genome
Gammaproteobacteria
Proteins
Cyanobacteria
Open Reading Frames
2015
1 Citation (Scopus)
Nucleic Acid Repetitive Sequences
DNA-Directed RNA Polymerases
Genome
Bacteroidetes
Open Reading Frames
2014

Click-chemistry tagging of proteins in living cells: New possibilities for microbial (meta) proteomics

MacGregor, B., Jan 1 2014, In : Environmental Microbiology. 16, 8, p. 2353-2356 4 p.

Research output: Contribution to journalArticle

Archaeal Proteins
alkynes
Click Chemistry
azides
bacterial proteins
40 Citations (Scopus)

Composition and enzymatic function of particle-associated and free-living bacteria: A coastal/offshore comparison

D'Ambrosio, L., Ziervogel, K., MacGregor, B., Teske, A. & Arnosti, C., Nov 25 2014, In : ISME Journal. 8, 11, p. 2167-2179 13 p.

Research output: Contribution to journalArticle

hydrolysis
Hydrolysis
polysaccharide
Otus
Bacteria
2013
13 Citations (Scopus)

Depth-Related differences in organic substrate utilization by major microbial groups in intertidal marine sediment

Miyatake, T., MacGregor, B. & Boschker, H. T. S., Jan 1 2013, In : Applied and Environmental Microbiology. 79, 1, p. 389-392 4 p.

Research output: Contribution to journalArticle

Geologic Sediments
Diatoms
Bacillariophyceae
marine sediments
Cyanobacteria
18 Citations (Scopus)
Beggiatoa
Cyanobacteria
cyanobacterium
microbial mat
genome
19 Citations (Scopus)
Beggiatoa
Sulfides
Electron Transport
cell respiration
sulfides
21 Citations (Scopus)

Why orange guaymas basin Beggiatoa spp. are orange: Single-filament-genome-enabled identification of an abundant octaheme cytochrome with hydroxylamine oxidase, hydrazine oxidase, and nitrite reductase activities

MacGregor, B., Biddle, J. F., Siebert, J. R., Staunton, E., Hegg, E. L., Matthysse, A. G. & Teske, A., Feb 1 2013, In : Applied and Environmental Microbiology. 79, 4, p. 1183-1190 8 p.

Research output: Contribution to journalArticle

hydroxylamine dehydrogenase
hydrazine
Beggiatoa
Nitrite Reductases
nitrite reductase
2012
126 Citations (Scopus)

Integrating microbial ecology into ecosystem models: Challenges and priorities

Treseder, K. K., Balser, T. C., Bradford, M. A., Brodie, E. L., Dubinsky, E. A., Eviner, V. T., Hofmockel, K. S., Lennon, J. T., Levine, U. Y., MacGregor, B., Pett-Ridge, J. & Waldrop, M. P., Jul 1 2012, In : Biogeochemistry. 109, 1-3, p. 7-18 12 p.

Research output: Contribution to journalArticle

microbial ecology
Ecology
Ecosystems
ecosystem
microbial community
35 Citations (Scopus)

Spatial heterogeneity and underlying geochemistry of phylogenetically diverse orange and white Beggiatoa mats in Guaymas Basin hydrothermal sediments

McKay, L. J., MacGregor, B., Biddle, J. F., Albert, D. B., Mendlovitz, H. P., Hoer, D. R., Lipp, J. S., Lloyd, K. G. & Teske, A. P., Sep 1 2012, In : Deep-Sea Research Part I: Oceanographic Research Papers. 67, p. 21-31 11 p.

Research output: Contribution to journalArticle

Beggiatoa
geochemistry
basins
sediments
basin
2010
43 Citations (Scopus)

Quantitative PCR methods for RNA and DNA in marine sediments: Maximizing yield while overcoming inhibition

Lloyd, K. G., MacGregor, B. & Teske, A., Apr 1 2010, In : FEMS Microbiology Ecology. 72, 1, p. 143-151 9 p.

Research output: Contribution to journalArticle

Geologic Sediments
sediment yield
marine sediment
purification
RNA
2009
31 Citations (Scopus)
Deltaproteobacteria
Geologic Sediments
delta-Proteobacteria
marine sediments
Phylogeny
2007
83 Citations (Scopus)

Diversity, relative abundance and metabolic potential of bacterial endosymbionts in three Bathymodiolus mussel species from cold seeps in the Gulf of Mexico

Duperron, S., Sibuet, M., MacGregor, B., Kuypers, M. M. M., Fisher, C. R. & Dubilier, N., Jun 1 2007, In : Environmental Microbiology. 9, 6, p. 1423-1438 16 p.

Research output: Contribution to journalArticle

Gulf of Mexico
cold seep
endosymbiont
Bivalvia
endosymbionts
68 Citations (Scopus)

Improved 16S rRNA-targeted probe set for analysis of sulfate-reducing bacteria by fluorescence in situ hybridization

Lücker, S., Steger, D., Kjeldsen, K. U., MacGregor, B., Wagner, M. & Loy, A., Jun 1 2007, In : Journal of Microbiological Methods. 69, 3, p. 523-528 6 p.

Research output: Contribution to journalArticle

Fluorescence In Situ Hybridization
Sulfates
Deltaproteobacteria
Bacteria
Oligonucleotides
2006
20 Citations (Scopus)
Geologic Sediments
marine sediments
Ribosomes
marine sediment
biomarker
12 Citations (Scopus)
Single-Stranded Conformational Polymorphism
single-stranded conformational polymorphism
microbial communities
microbial community
polymorphism
2004
119 Citations (Scopus)

An improved fluorescence in situ hybridization protocol for the identification of bacteria and archaea in marine sediments

Ishii, K., Mußmann, M., MacGregor, B. & Amann, R., Nov 22 2004, In : FEMS Microbiology Ecology. 50, 3, p. 203-212 10 p.

Research output: Contribution to journalArticle

Geologic Sediments
Archaea
Horseradish Peroxidase
Fluorescence In Situ Hybridization
marine sediment
2003
84 Citations (Scopus)

Related assemblages of sulphate-reducing bacteria associated with ultradeep gold mines of South Africa and deep basalt aquifers of Washington State

Baker, B. J., Moser, D. P., MacGregor, B., Fishbain, S., Wagner, M., Fry, N. K., Jackson, B., Speolstra, N., Loos, S., Takai, K., Lollar, B. S., Fredrickson, J., Balkwill, D., Onstott, T. C., Wimpee, C. F. & Stahl, D. A., Apr 1 2003, In : Environmental microbiology. 5, 4, p. 267-277 11 p.

Research output: Contribution to journalArticle

sulfate-reducing bacteria
basalt
Desulfotomaculum
Groundwater
gold mine
2002
29 Citations (Scopus)

Evidence for a dynamic cycle between Mn and Co in the water column of a stratified lake

Taillefert, M., MacGregor, B., Gaillard, J. F., Lienemann, C. P., Perret, D. & Stahl, D. A., Feb 1 2002, In : Environmental Science and Technology. 36, 3, p. 468-476 9 p.

Research output: Contribution to journalArticle

Lakes
water column
Water
lake
Dissolution
41 Citations (Scopus)

Isolation of small-subunit rRNA for stable isotopic characterization

MacGregor, B., Brüchert, V., Fleischer, S. & Amann, R., Aug 29 2002, In : Environmental Microbiology. 4, 8, p. 451-464 14 p.

Research output: Contribution to journalArticle

Ribosomal RNA
RNA
ribosomal RNA
biomarker
Biomarkers
2001
12 Citations (Scopus)

Distribution and abundance of Gram-positive bacteria in the environment: Development of a group-specific probe

MacGregor, B., Toze, S., Alm, E. W., Sharp, R., Ziemer, C. J. & Stahl, D. A., Apr 2 2001, In : Journal of Microbiological Methods. 44, 3, p. 193-203 11 p.

Research output: Contribution to journalArticle

Gram-Positive Bacteria
Humic Substances
Negative Staining
Oligonucleotide Probes
Rumen
10 Citations (Scopus)

Evidence for tight coupling between active bacteria and particulate organic carbon during seasonal stratification of Lake Michigan

Van Mooy, B., MacGregor, B., Hollander, D., Nealson, K. & Stahl, D., Jan 1 2001, In : Limnology and Oceanography. 46, 5, p. 1202-1208 7 p.

Research output: Contribution to journalArticle

Lake Michigan
particulate organic carbon
particulate organic matter
stratification
bacterium
35 Citations (Scopus)

Microbiological, molecular biological and stable isotopic evidence for nitrogen fixation in the open waters of Lake Michigan

MacGregor, B., Van Mooy, B., Baker, B. J., Mellon, M., Moisander, P. H., Paerl, H. W., Zehr, J., Hollander, D. & Stahl, D. A., Dec 27 2001, In : Environmental microbiology. 3, 3, p. 205-219 15 p.

Research output: Contribution to journalArticle

Nitrogen Fixation
Lake Michigan
nitrogen fixation
Lakes
open water
35 Citations (Scopus)

Seasonal and Spatial Variability in Lake Michigan Sediment Small-Subunit rRNA Concentrations

MacGregor, B., Moser, D. P., Baker, B. J., Alm, E. W., Maurer, M., Nealson, K. H. & Stahl, D. A., Sep 1 2001, In : Applied and environmental microbiology. 67, 9, p. 3908-3922 15 p.

Research output: Contribution to journalArticle

Lake Michigan
Lakes
Nitrates
lacustrine deposit
ribosomal RNA
1999
11 Citations (Scopus)

Molecular approaches to the study of aquatic microbial communities

MacGregor, B., Jan 1 1999, In : Current Opinion in Biotechnology. 10, 3, p. 220-224 5 p.

Research output: Contribution to journalReview article

Oligonucleotides
Sorting
Cells
Messenger RNA
Oligonucleotide Array Sequence Analysis
480 Citations (Scopus)

Polyphasic taxonomy of the genus Shewanella and description of Shewanella oneidensis sp. nov.

Venkateswaran, K., Moser, D. P., Dollhopf, M. E., Lies, D. P., Saffarini, D. A., MacGregor, B., Ringelberg, D. B., White, D. C., Nishijima, M., Sano, H., Burghardt, J., Stackebrandt, E. & Nealson, K. H., Jan 1 1999, In : International Journal of Systematic Bacteriology. 49, 2, p. 705-724 20 p.

Research output: Contribution to journalArticle

Shewanella oneidensis
Shewanella
taxonomy
new species
Shewanella pealeana
336 Citations (Scopus)

Population structure and phylogenetic characterization of marine benthic Archaea in deep-sea sediments

Vetriani, C., Jannasch, H. W., MacGregor, B., Stahl, D. A. & Reysenbach, A. L., Oct 1 1999, In : Applied and Environmental Microbiology. 65, 10, p. 4375-4384 10 p.

Research output: Contribution to journalArticle

deep-sea sediment
Archaea
Ribosomal DNA
Oceans and Seas
population structure
51 Citations (Scopus)

Shewanella pealeana sp. nov., a member of the microbial community associated with the accessory nidamental gland of the squid Loligo pealei

Leonardo, M. R., Moser, D. P., Barbieri, E., Brantner, C. A., MacGregor, B., Paster, B. J., Stackebrandt, E. & Nealson, K. H., Jan 1 1999, In : International Journal of Systematic Bacteriology. 49, 4, p. 1341-1351 11 p.

Research output: Contribution to journalArticle

Shewanella pealeana
Loligo
Shewanella
Decapodiformes
choline
130 Citations (Scopus)

Sulphate reduction and vertical distribution of sulphate-reducing bacteria quantified by rRNA slot-blot hybridization in a coastal marine sediment

Sahm, K., MacGregor, B., Jørgensen, B. B. & Stahl, D. A., Jan 1 1999, In : Environmental Microbiology. 1, 1, p. 65-74 10 p.

Research output: Contribution to journalArticle

Geologic Sediments
sulfate-reducing bacteria
coastal sediment
marine sediments
sulfate-reducing bacterium
1998
13 Citations (Scopus)

Transcription of the Rhodobacter sphaeroides cycA P1 promoter by alternate RNA polymerase holoenzymes

MacGregor, B., Karls, R. K. & Donohue, T. J., Jan 1 1998, In : Journal of Bacteriology. 180, 1, p. 1-9 9 p.

Research output: Contribution to journalArticle

Cycas
Rhodobacter sphaeroides
Holoenzymes
DNA-Directed RNA Polymerases
Escherichia coli
1997
175 Citations (Scopus)

Crenarchaeota in Lake Michigan sediment

MacGregor, B., Moser, D. P., Alm, E. W., Nealson, K. H. & Stahl, D. A., Mar 1 1997, In : Applied and Environmental Microbiology. 63, 3, p. 1178-1181 4 p.

Research output: Contribution to journalArticle

Crenarchaeota
Lake Michigan
DNA Probes
Lakes
lacustrine deposit
1991
17 Citations (Scopus)

Evidence for two promoters for the cytochrome c2 gene (cycA) of Rhodobacter sphaeroides

MacGregor, B. & Donohue, T. J., Jan 1 1991, In : Journal of Bacteriology. 173, 13, p. 3949-3957 9 p.

Research output: Contribution to journalArticle

Cycas
Cytochromes c2
Rhodobacter sphaeroides
Genes
Periplasmic Proteins
6 Citations (Scopus)

Genetic and physical mapping of the Rhodobacter sphaeroides photosynthetic gene cluster from R-prime pWS2

Wu, Y. Q., MacGregor, B., Donohue, T. J., Kaplan, S. & Yen, B., Jan 1 1991, In : Plasmid. 25, 3, p. 163-176 14 p.

Research output: Contribution to journalArticle

Physical Chromosome Mapping
Rhodobacter sphaeroides
Multigene Family
Cycas
Bacteriochlorophylls