Abstract:
:The effect of CO2 availability on cell size, shape, and aggregation in continuous cultures of Candida utilis was studied in minimal medium with glucose or ethanol as the sole carbon and energy source. Enrichment with CO2 was achieved (i) by using the substrate with more C atoms, (ii) by using pure oxygen and thus decreasing aeration intensity at the same dissolved-oxygen concentration, or (iii) by adding CO2 to the aeration gas. The cells were always of yeast shape, and no filaments were formed. In cultures with a biomass concentration above 6 g (dry weight) per liter, no cell aggregates were observed. In cultures with a lower biomass, the daughter cells failed to separate from the parent cells and formed aggregates with thickened walls. The average cell number per aggregate was found to be higher, and the average protoplast volume lower, under conditions of probable CO2 limitation. Simultaneously, the ratio of total dry weight to wet weight of protoplasts was considerably higher, indicating an increased share of wall or extracellular material. The possible effect of the observed morphological changes for maintaining a suitable concentration gradient of CO2 around the cell is discussed.
journal_name
Appl Environ Microbioljournal_title
Applied and environmental microbiologyauthors
Straskrabová V,Páca J,Králícková Edoi
10.1128/AEM.40.5.855-861.1980subject
Has Abstractpub_date
1980-11-01 00:00:00pages
855-61issue
5eissn
0099-2240issn
1098-5336journal_volume
40pub_type
杂志文章abstract::An aminotransferase capable of transaminating 2-oxo-4-[(hydroxy)(methyl)phosphinoyl]butyric acid to L-phosphinothricin [L-homoalanine-4-yl-(methyl)phosphinic acid], the active ingredient of the herbicide Basta (Hoechst AG), was purified to apparent homogeneity from Escherichia coli K-12. The enzyme catalyzes the trans...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.56.1.1-6.1990
更新日期:1990-01-01 00:00:00
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doi:10.1128/AEM.00262-08
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pub_type: 杂志文章
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pub_type: 杂志文章
doi:10.1128/AEM.63.1.39-43.1997
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pub_type: 杂志文章
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.59.12.4330-4334.1993
更新日期:1993-12-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.45.6.1899-1904.1983
更新日期:1983-06-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.47.6.1228-1237.1984
更新日期:1984-06-01 00:00:00
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pub_type: 杂志文章
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更新日期:2003-09-01 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:2009-02-01 00:00:00
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pub_type: 杂志文章
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更新日期:2000-12-01 00:00:00
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pub_type: 杂志文章
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
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更新日期:2005-04-01 00:00:00
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pub_type: 杂志文章
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更新日期:2004-08-01 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:2008-03-01 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:1977-08-01 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:1995-06-01 00:00:00
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pub_type: 杂志文章
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更新日期:2004-07-01 00:00:00
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journal_title:Applied and environmental microbiology
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.62.8.2966-2969.1996
更新日期:1996-08-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.55.2.520-522.1989
更新日期:1989-02-01 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:2008-12-01 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:2007-11-01 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:2008-12-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.57.3.694-700.1991
更新日期:1991-03-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.69.10.5957-5967.2003
更新日期:2003-10-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.01050-14
更新日期:2014-08-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.70.1.262-267.2004
更新日期:2004-01-01 00:00:00
abstract::Bacteriophages against Streptococcus thermophilus are a growing problem in the Italian cheese industry. One possible control method involves replacing S. thermophilus in mozzarella starter blends with lactic acid bacteria from a different genus or species. In this study, we evaluated lactose-positive pediococci for th...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.62.3.936-941.1996
更新日期:1996-03-01 00:00:00