Abstract:
:An accurate most-probable-number enumeration method was developed for counting the number of Beggiatoa trichomes from various freshwater sediments. The medium consisted of extracted hay, diluted soil extract, 0.05% acetate, and 15 to 35 U of catalase per ml. The same enrichment medium, but without the acetate, was the best enrichment medium from which to obtain pure cultures because it supported good growth of the beggiatoas without allowing them to be overgrown by other bacteria. A total of 32 strains of Beggiatoa were isolated from seven different freshwater habitats and partially characterized. The strains were separated into five groups based on several preliminary characteristics. Four of the groups contained cells with trichomes of approximately the same diameter (1.5 to 2.7 mum) and may be Beggiatoa leptomitiformis or an unnamed species. The fifth group appeared to be Beggiatoa alba. With the exception of three strains, all of the strains deposited sulfur in the presence of hydrogen sulfide, and all strains grew heterotrophically and deposited poly-beta-hydroxybutyrate and volutin when grown on acetate supplemented with low concentrations of other organic nutrients. Thin sections of sulfur-bearing trichomes indicated that the sulfur granules were external to the cytoplasmic membrane and that they were surrounded by an additional membrane.
journal_name
Appl Environ Microbioljournal_title
Applied and environmental microbiologyauthors
Strohl WR,Larkin JMdoi
10.1128/AEM.36.5.755-770.1978keywords:
subject
Has Abstractpub_date
1978-11-01 00:00:00pages
755-70issue
5eissn
0099-2240issn
1098-5336journal_volume
36pub_type
杂志文章abstract::Pigment production by the fungus Monascus sp. was studied to determine why Monascus sp. provides more pigment in solid culture than in submerged culture. Adding a sterilized nonionic polymeric adsorbent resin directly to the growing submerged culture did not enhance the pigment production, thus indicating that pigment...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.47.6.1323-1326.1984
更新日期:1984-06-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.47.5.1161-1163.1984
更新日期:1984-05-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.48.5.1001-1003.1984
更新日期:1984-11-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.65.10.4357-4362.1999
更新日期:1999-10-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.34.2.230-231.1977
更新日期:1977-08-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00173-15
更新日期:2015-05-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00038-06
更新日期:2006-07-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.45.4.1415-1417.1983
更新日期:1983-04-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.32.5.716-722.1976
更新日期:1976-11-01 00:00:00
abstract::The vaginal mucosa of ovariectomized female rats has been examined by scanning electron microscopy before and after estrogen [1,3,5(10)-estratriene-3,17beta-diol] treatment. Without estrogen stimulation vaginal colonization is minimal and the epithelium is characterized by a layer of epithelial cells covered with smal...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.34.1.80-87.1977
更新日期:1977-07-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00031-10
更新日期:2010-07-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.02449-06
更新日期:2007-05-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.02127-09
更新日期:2010-02-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.49.6.1530-1531.1985
更新日期:1985-06-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.67.7.2973-2981.2001
更新日期:2001-07-01 00:00:00
abstract::Azotobacter vinelandii selectively utilizes three types of nitrogenase (molybdenum, vanadium, and iron only) to fix N2, with their expression regulated by the presence or absence of different metal cofactors in its environment. Each alternative nitrogenase isoenzyme is predicted to have different electron flux require...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.01208-18
更新日期:2018-08-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.49.3.706-708.1985
更新日期:1985-03-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00672-17
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.63.3.1148-1150.1997
更新日期:1997-03-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
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更新日期:2007-04-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.46.3.573-579.1983
更新日期:1983-09-01 00:00:00
abstract::The food-borne pathogenic bacterium Listeria is known for relatively low morbidity and high mortality rates, reaching up to 25 to 30%. Listeria is a hardy organism, and its control in foods represents a significant challenge. Many naturally occurring compounds, including the bacteriocin nisin and a number of plant ess...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00070-15
更新日期:2015-04-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.41.4.967-971.1981
更新日期:1981-04-01 00:00:00
abstract::Bacillus thuringiensis serovar israelensis (B. thuringiensis subsp. israelensis) produces four insecticidal crystal proteins (ICPs) (Cry4A, Cry4B, Cry11A, and Cyt1A). Toxicity of recombinant B. thuringiensis subsp. israelensis strains expressing only one of the toxins was determined with first instars of Tipula paludo...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.01056-06
更新日期:2007-06-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.01415-06
更新日期:2007-01-01 00:00:00
abstract::Disulfide bonds are important for the correct folding, structural integrity, and activity of many biotechnologically relevant proteins. For synthesis and subsequent secretion of these proteins in bacteria, such as the well-known "cell factory" Bacillus subtilis, it is often the correct formation of disulfide bonds tha...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00894-08
更新日期:2008-12-01 00:00:00
abstract::The levels of integron abundance and diversity in soil amended with pig slurry were studied. Real-time PCR illustrated a significant increase in class 1 integron prevalence after slurry application, with increased prevalence still evident at 10 months after application. Culture-dependent data revealed 10 genera, inclu...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.01425-10
更新日期:2011-01-01 00:00:00
abstract::Escherichia coli, a commensal bacterium from the intestinal tracts of humans and vertebrate animals, has been used as one of two bacterial indicators of fecal contamination, along with intestinal enterococci, to monitor the microbiological quality of water. However, water environments are now recognized as a secondary...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00698-13
更新日期:2013-08-01 00:00:00
abstract::Heavy metal resistance by bacteria is a topic of much importance to the bioremediation of contaminated soils and sediments. We report here the isolation of a highly cadmium-resistant Klebsiella planticola strain, Cd-1, from reducing salt marsh sediments. The strain grows in up to 15 mM CdCl(2) under a wide range of Na...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.66.7.3083-3087.2000
更新日期:2000-07-01 00:00:00