Abstract：
:After the addition to soil of large numbers of a cowpea Rhizobium strain, the population declined steadily until the numbers reached about 10(7)/g, and the protozoa rose to about 10(4)/g. When indigenous protozoa were suppressed by the addition of actidione to the soil, the density of the test rhizobium did not fall initially, but its abundance declined to about 10(7)/g when actidione-resistant protozoa arose in significant numbers. The addition to actidione-treated soil of an antibiotic-resistant strain of Paramecium led to a rapid decrease in the population of the rhizobium, the density reaching essentially the same value as in soil receiving neither the drug nor the paramecia. The same changes occurred with Xanthomonas campestris as test prey except that its numbers fell to about 10(5)/g of soil. These data provide further evidence for the key role of protozoa in controlling the abundance of populations of certain bacteria introduced into soil.
journal_name
Arch Microbioljournal_title
Archives of microbiologyauthors
Habte M,Alexander Mdoi
10.1007/BF00492022subject
Has Abstractpub_date
1977-06-20 00:00:00pages
181-3issue
3eissn
0302-8933issn
1432-072Xjournal_volume
113pub_type
杂志文章abstract：:An Arthrobacter sp. growing on 4-Chlorobenzoic acid as its sole source of carbon excretes 4-hydroxygenzoic acid and protocatechuic acid into the culture medium. Protocatechuic acid is further attacked by "meta"-cleavage. During growth of the Arthrobacter sp. on benzoic acid cis-cis muconic acid can be isolated from th...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00690235
更新日期：1976-11-02 00:00:00
abstract：:The radiation resistant bacteria Micrococcus radiophilus and M. radioproteolyticus were studied by thin sectioning and freez-etching techniques and the two species were found to be similar in the fine structure. The only significant difference was in the appearance of the surfaces of the cell walls in freeze-etched pr...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00425346
更新日期：1976-04-01 00:00:00
abstract：:Bacillus cereus F4430/73 produced the highest levels of hemolysin BL (HBL) when grown under anaerobiosis in MOD medium. Anaerobic cells grown in a chemostat at low specific growth rate (0.1-0.2 h(-1)) expressed up to sevenfold more HBL than did cells held at a faster growth rate. At 0.2 h(-1), the presence of 90 mM gl...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-004-0688-y
更新日期：2004-09-01 00:00:00
abstract：:The activities of NAD+-photoreduction and NADH/decyl-ubiquinone reductase in membrane preparations of Rhodobacter capsulatus changed to the same extent under different conditions. These results indicated that NADH:ubiquinone oxidoreductase (complex I) catalyzes the electron transport in the downhill direction (respira...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s002030050548
更新日期：1998-02-01 00:00:00
abstract：:Essential oils (EOs) are products of plant origin and include mixtures of different chemical compounds. These volatile substances have many interesting properties, including antifungal properties. Fungi may develop under field conditions on crops such as wheat or corn and are able to synthesize mycotoxins, which adver...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-019-01673-5
更新日期：2019-10-01 00:00:00
abstract：:Nodules collected from Alnus nepalensis growing in mixed forest stands at three different sites around Shillong, were crushed in various culture media to obtain isolates of Frankia. The isolates were found to have typical Frankia morphology as revealed by the scanning electron microscope. Seedlings inoculated with iso...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00276476
更新日期：1994-01-01 00:00:00
abstract：:The gliding bacterium Herpetosiphon giganteus Hp a2 was shown to contain gamma-carotene, one monoglucosyloxy and two new diglucosyloxy carotenoids with a x-O-acyldiglucosyloxy carotenoid as main component. Flexirubin-like pigments could not be detected in this organism. As in the Myxobacterales and Cytophagales (Klein...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00413098
更新日期：1977-04-01 00:00:00
abstract：:The molecular weight of the protein moiety of a phospholipoprotein complex isolated from Pseudomonas facilis has been examined with a variety of sodium dodecylsulfate-polyacrylamide gel electrophoretic systems. A molecular weight of 35 000 was determined for the protein in all analyses. A 35 000-dalton protein was pre...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00427842
更新日期：1977-10-24 00:00:00
abstract：:We report on the genome-wide response, based on DNA microarrays, of the cyanobacterium Synechocystis sp. PCC 6803 wild type and DeltasigB to a 15 min heat shock. Approximately 9% of the genes in wild type and DeltasigB were significantly regulated (P < 0.001) following this treatment, with chaperones induced the most....
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-006-0138-0
更新日期：2006-10-01 00:00:00
abstract：:Two gene clusters encoding similar formate dehydrogenases (FDH) were identified in Eubacterium acidaminophilum. Each cluster is composed of one gene coding for a catalytic subunit ( fdhA-I, fdhA-II) and one for an electron-transferring subunit ( fdhB-I, fdhB-II). Both fdhA genes contain a TGA codon for selenocysteine ...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-002-0508-1
更新日期：2003-01-01 00:00:00
abstract：:The fine structure of the Gram-negative filamentous gliding bacterium, Herpetosiphon is described. The outer membrane of the cell envelope could not be resolved as a separate structure, probably because it is fused with the underlying dense (peptidoglycan) layer. There was an additional wall layer outside this membran...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00428379
更新日期：1975-03-10 00:00:00
abstract：:The carboxysomal polypeptides of Thiobacillus neapolitanus with apparent molecular masses of 85 and 130 kDa were isolated and subjected to N-terminal sequencing. The first 17 amino acids of the two peptides were identical. The sequence perfectly matched the deduced amino acid sequence of an open reading frame in the c...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s002030050765
更新日期：1999-10-01 00:00:00
abstract：:Lipase is an important commercial enzyme with unique and versatile biotechnological applications. This study was conducted to biosynthesize and characterizes alkaliphilic lipase by Exiguobacterium sp. strain AMBL-20T isolated from the glacial water samples of the northeastern (Gilgit-Baltistan) region of Pakistan. The...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-020-02133-1
更新日期：2020-12-15 00:00:00
abstract：:Nitrogen (N) is among the most important macro-nutrients significantly affecting plant growth and yield production. Accordingly, N must be supplied adequately so that optimum amounts of yield are resulted. There are different ways of supplying N to the plant including the use of chemical and biological fertilization. ...
journal_title：Archives of microbiology
pub_type： 杂志文章,评审
doi：10.1007/s00203-010-0657-6
更新日期：2011-02-01 00:00:00
abstract：:The maleylacetate reductase of 3-chlorobenzoate-grown cells of Pseudomonas sp. strain B13 has been purified 50-fold. The enzyme converted 2-chloromaleylacetate to 3-oxoadipate with temporary occurrence of maleylacetate; 1 mol of chloride was eliminated during the conversion of 1 mol of 2-chloro- and 2,3-dichloromaleyl...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00276301
更新日期：1992-01-01 00:00:00
abstract：:The applicability of flow-microfluorometer to separate microbial cells was demonstrated with algal and bacterial cells. Algal mixtures were sorted according to the natural chlorophyll fluorescence and the bacterial mixtures were sorted according to the fluorescence of ethidium bromide-stained nucleic acid. ...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00423075
更新日期：1979-03-12 00:00:00
abstract：:The biosynthesis of two flavoproteins, 6-hydroxy-D-nicotine oxidase with covalently bound FAD and 6-hydroxy-L-nicotine oxidase containing non-covalently bound FAD, was studied in wild-type cells and in a riboflavin-requiring mutant of Arthrobacter oxidans. In the mutant cells, the rate of synthesis and the maximal act...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00407929
更新日期：1978-10-04 00:00:00
abstract：:The effects of the Ca(2+)/H(+) exchanger A23187 and the K(+)/H(+) exchanger nigericin, the electrogenic membrane-potential depleters valinomycin and CCCP, and the calcium channel blockers ruthenium red, nifedipine, and nitrendipine on the apical growth of Phycomyces blakesleeanus were analyzed. While all of the compou...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-003-0609-5
更新日期：2003-12-01 00:00:00
abstract：:Bacteriophages rapidly diversify their genes through co-evolution with their hosts. We hypothesize that gene diversification of phages leads to locality in phages genome. To test this hypothesis, we investigated the genetic diversity and composition of Microcystis cyanophages using 104 sequences of Ma-LMM01-type cyano...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-014-0980-4
更新日期：2014-06-01 00:00:00
abstract：:Endophytic bacteria have been reported to have symbiotic, mutualistic, commensalistic or trophobiotic relationships with various plant parts. As part of its adaptation, many endophytic organisms are known to exhibit properties with multiple beneficial effects to the plant system. Even though many bacterial genera have...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-020-01911-1
更新日期：2020-09-01 00:00:00
abstract：:Electron microscopic studies emphasized that the protein-E-specific transmembrane tunnel structure, which permeabilizes Escherichia coli, is not randomly distributed over the cell envelope but is restricted to areas of potential division sites. These sites were located predominantly in the middle of the cell, but appr...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s002030050641
更新日期：1998-10-01 00:00:00
abstract：:A new psychrophilic, anaerobic, acetogenic bacterium from the tundra wetland soil of Polar Ural is described. The organism fermented H2/CO2, formate, methanol, and several sugars to acetate as the sole end-product. The temperature range for growth was 1-30 degrees C with an optimum at 20 degrees C. The bacterium showe...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s002030000229
更新日期：2000-12-01 00:00:00
abstract：:BvgAS is a two-component system of Bordetella pertussis involved in the reciprocal regulation of the virulence genes and the flagellar biosynthesis. In this study, we found that expression of bvgAS in Escherichia coli also results in reduced motility. The repression was relieved by the addition of known chemical modul...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s002030050688
更新日期：1999-01-01 00:00:00
abstract：:The objective of this work was to investigate the structure and diversity of lactic acid bacteria (LAB) communities in traditionally fermented meat collected from different areas of Tunisia. A polyphasic study, which involves phenotypic tests and ribosomal DNA-based techniques, was used to identify Gram-positive and c...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-009-0499-2
更新日期：2009-09-01 00:00:00
abstract：:Recently, a unique archaeal/bacterial community that grows in a macroscopically visible string-of-pearls-like structure in cold (~10 degrees C), sulfurous marsh water was discovered. Here, a new technique is described that allows the fast and reliable growth of these string-of-pearls-like microbial communities in larg...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-003-0580-1
更新日期：2003-09-01 00:00:00
abstract：:The development of peritrichous flagella and, consequently, swarming of Vibrio alginolyticus depend on a complex relationship between temperature, salt concentrations and pH. At temperatures above 28 degrees C V. alginolyticus did not develop peritrichous flagella unless certain minimal concentrations of NaCl are pres...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00447338
更新日期：1975-08-28 00:00:00
abstract：:The essential oil (EO) from the roots of Plectranthus barbatus Andr. (Syn. Coleus forskohlii Briq.) was evaluated for quorum sensing (QS) inhibitory activity. P. barbatus EO was screened for inhibition of QS regulated violacein production in Chromobacterium violaceum (ATCC 12472) wild-type strain. At inhibitory (6.25%...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-020-02171-9
更新日期：2021-01-20 00:00:00
abstract：:To identify virulence-associated genes of a fish pathogen Yersinia ruckeri, we screened a total of 1056 mini-Tn5-Km2 signature-tagged mutants in rainbow trout by immersion challenge. Of 1056, 25 mutants were found survival-defective as they could not be re-isolated from fish kidney 7 days after infection. Mutated gene...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-010-0582-8
更新日期：2010-07-01 00:00:00
abstract：:Under starvation conditions, rhodopsin-containing halobacteria show a light-accelerated death under aerobic conditions. This is attributed to photooxidative processes. Under anaerobic conditions, halobacteria die rapidly in the dark, and light prevents death. Since it has been shown by others that lightdriven ATP synt...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00425136
更新日期：1976-08-01 00:00:00
abstract：:Acyl carrier protein (ACP) is a small acidic protein that acts as an essential cofactor in many biosynthetic pathways depending on acyl transfer reactions. In this work, a Vibrio anguillarum ACP encoding gene, acpV, was first cloned from the chromosome of a virulent V. anguillarum strain MVM425. acpV was over-expresse...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-005-0058-4
更新日期：2006-03-01 00:00:00
