Abstract：
:The mutagenic activity of ethyl acetate extracts of culture medium from Cunninghamella elegans incubated 72 h with various polycyclic aromatic hydrocarbons (PAHs) was evaluated in the Salmonella typhimurium reversion assay. All of the PAH extracts were assayed in tester strains TA98 and TA100 both with and without metabolic activation using a liver fraction from Aroclor 1254-treated rats. None of the extracts from fungal incubations with the mutagenic PAHs, benzo[a]pyrene, 7,12-dimethylbenz[a]anthracene, 3-methylcholanthrene and benz[a]anthracene, as well as the non-mutagenic PAHs, naphthalene, phenanthrene and anthracene, displayed any appreciable mutagenic activity. In addition, time course experiments indicated that the rate of decrease in mutagenic activity in the extracts from cultures incubated with benzo[a]pyrene or 7,12-dimethylbenz[a]anthracene was coincident with the rate of increase in total metabolism. The results demonstrated the ability of the fungus C. elegans to detoxify known carcinogens and mutagens and suggests that this organism may play an important role in the metabolism and inactivation of PAHs in the environment.
journal_name
Arch Microbioljournal_title
Archives of microbiologyauthors
Cerniglia CE,White GL,Heflich RHdoi
10.1007/BF00411031subject
Has Abstractpub_date
1985-11-01 00:00:00pages
105-10issue
2eissn
0302-8933issn
1432-072Xjournal_volume
143pub_type
杂志文章abstract：:Autotrophic cultures of the facultative chemolithotroph Alcaligenes eutrophus have been found to excrete glycollate. This excretion was greatly stimulated by the incorporation of up to 20% (v/v) oxygen in the hydrogen used for gassing. The stimulatory effect of oxygen was prevented by the addition of 10% (v/v) CO2 to ...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00690224
更新日期：1976-11-02 00:00:00
abstract：:The diversity among 45 cyanobacterial isolates from 11 different Gunnera species originating from different geographical areas was examined. By means of polymerase chain reaction (PCR) fingerprinting with short tandemly repeated repetitive (STRR) sequences as primers, ten groups of symbiotic cyanobacteria and five uni...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s002039900113
更新日期：2000-02-01 00:00:00
abstract：:Recently, it was proposed that some antibiotics stimulate the production of reactive oxygen species (ROS), which contribute to cell death. Later, other research groups have provided arguments against ROS-mediated killing of bacteria by antibiotics. At present, there remain a number of unanswered questions in understan...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-016-1247-z
更新日期：2016-11-01 00:00:00
abstract：:To address correlations between population sizes of microbes on the leaf surfaces and leaf morphological and physicochemical properties, various leaf morphological and physicochemical features as possible predictors of microbial population sizes on the leaf surfaces of four Napier grass cultivars were assessed. Result...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-020-02025-4
更新日期：2021-01-01 00:00:00
abstract：:The efficiency of hydrolysis of fungal (Fusarium spp.) cell wall and rye root cell wall by crude enzymatic complexes from (42-day-old) cultures of three F. culmorum isolates, a plant growth-promoting rhizosphere isolate (PGPF) DEMFc2, a deleterious rhizosphere isolate (DRMO) DEMFc5, and a pathogenic isolate DEMFc37, a...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-012-0803-4
更新日期：2012-08-01 00:00:00
abstract：:In beta-lactam-antibiotic-producing fungi, such as Aspergillus (Emericella) nidulans, L-alpha-aminoadipic acid is the branching point of the lysine and penicillin biosynthesis pathways. To obtain a deeper insight into the regulation of lysine biosynthesis genes, the regulation of the A. nidulans lysF gene, which encod...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s002030000246
更新日期：2001-02-01 00:00:00
abstract：:In an extended study on the biodiversity of rock-dwelling bacteria, the colony and cell morphology, physiology, protein patterns, and 16S rDNA sequences of 17 bacterial strains isolated from different surfaces of rocks, stones, and monuments and from various geographical locations were characterized. All except one st...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s002030050350
更新日期：1996-07-01 00:00:00
abstract：:Penicillium marneffei is a dimorphic fungus that intracellularly infects the reticuloendothelial system of humans and bamboo rats. Endemic in Southeast Asia, it infects 10% of AIDS patients in this region. The absence of a sexual stage and the highly infectious nature of the mould-phase conidia have impaired studies o...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-003-0533-8
更新日期：2003-05-01 00:00:00
abstract：:CSM2, a cold-sensitive mutant of psychrophilic Pseudomonas syringae, grows like wild-type cells when cultured at 22 and 28 degrees C; but at 4 degrees C, the growth is retarded. In CSM2, AAT (coding for aspartate aminotransferase) is identified as the mutated gene. The expression of AAT in Pseudomonas syringae was tra...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-010-0591-7
更新日期：2010-08-01 00:00:00
abstract：:Bacterial pathogens are a major threat to both humans and animals worldwide. It is crucial to understand the mechanisms of various disease processes at the molecular level. Shewanella species are widespread in the environment and some are considered as emerging opportunistic human and marine mammal pathogens. In this ...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-020-02060-1
更新日期：2020-10-10 00:00:00
abstract：:Chemoautotrophic endosymbionts residing in Solemya velum gills provide this shallow water clam with most of its nutritional requirements. The cbb gene cluster of the S. velum symbiont, including cbbL and cbbS, which encode the large and small subunits of the carbon-fixing enzyme ribulose 1,5-bisphosphate carboxylase/o...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-004-0689-x
更新日期：2004-09-01 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：:The regulation of the syntheses of two arabinan-degrading extracellular enzymes and several intracellular L-arabinose catabolic enzymes was examined in wild-type and carbon catabolite derepressed mutants of Aspergillus nidulans. alpha-L-Arabinofuranosidase B, endoarabinase, L-arabinose reductase, L-arabitol dehydrogen...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00282109
更新日期：1994-01-01 00:00:00
abstract：:Anaplerotic fixation of carbon dioxide by the fungus Aspergillus nidulans when grown under carbon-limited conditions was mediated by pyruvate carboxylase and a phosphoenol pyruvate (PEP)-metabolising enzyme which has been tentatively designated as PEP carboxylase. The activities of both enzymes were growth rate depend...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00422531
更新日期：1981-01-01 00:00:00
abstract：:A strain of Pseudomonas fluorescens was capable of co-metabolizing 3-chlorobenzoic acid with the production of a chlorinated catechol black pigment. A peroxidase and another enzymatic activity referred to as a polyphenol oxidase were found to be involved in the oxidation of 4-chlorocatechol to 4-chloro-1,2-benzoquinon...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00252220
更新日期：1993-01-01 00:00:00
abstract：:Denitrification by Thiobacillus denitrificans "RT" strain was investigated using manometry and gas chromatography. 1. From nitrate, resting cells produced only nitrogen anaerobically with thiosulfate as the electron donor. The data suggest that nitrate was assimilated and dissimilated by the same nitrate reductase, as...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00436326
更新日期：1975-03-12 00:00:00
abstract：:In yeasts, several sensing systems localized to the plasma membrane which transduce information regarding the availability and quality of nitrogen and carbon sources and work in parallel with the intracellular nutrient-sensing systems, regulate the expression and activity of proteins involved in nutrient uptake and ut...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-005-0022-3
更新日期：2005-11-01 00:00:00
abstract：:A gram-negative bacterium was isolated from activated sewage sludge with thiophene-2-carboxylate as the sole source of carbon and with nitrate as an electron acceptor. The isolate, strain NKK, was a motile, oxidase- and catalase-positive, rod-like bacterium with a G+C content of 61.7 mol%. Besides nitrate, oxygen coul...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s002030050575
更新日期：1998-04-01 00:00:00
abstract：:Pseudomonas maltophilia CSV89, a bacterium isolated from soil in our laboratory, grows on 1-naphthoic acid as the sole source of carbon and energy. To elucidate the pathway for degradation of 1-naphthoic acid, the metabolites were isolated from spent medium, purified by TLC, and characterized by gas chromatography-mas...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00262202
更新日期：1995-01-01 00:00:00
abstract：:The study was conducted to evaluate the microbiological and chemical profiles of elephant grass inoculated with and without different wild strains of lactic acid bacteria. Silage was prepared of four treatments and one control with three replicates as control (EKC, adding 2 ml/kg sterilizing water), Lactobacillus plan...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-017-1447-1
更新日期：2018-03-01 00:00:00
abstract：:The set of physiological and metabolic changes occurring immediately after inoculation and during the lag phase is thought to be of vital importance for optimal offset of fermentation. The transcriptional changes taking place during the lag phase after inoculation of a late-respiratory-phase yeast culture into fresh, ...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-003-0527-6
更新日期：2003-04-01 00:00:00
abstract：:The sulfate-reducing highly enriched culture N47 is capable to anaerobically degrade naphthalene, 2-methylnaphthalene, and 2-naphthoic acid. A proteogenomic investigation was performed to elucidate the initial activation reaction of anaerobic naphthalene degradation. This lead to the identification of an alpha-subunit...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-010-0667-4
更新日期：2011-04-01 00:00:00
abstract：:The metabolism of methylamine as the nitrogen source for growth of the non-methylotrophic yeast Candida utilis and the methylotrophic yeast Hansenula polymorpha was investigated. Growth of both organisms in media with glucose and methylamine was associated with the presence of an amine oxidase in these cells. The enzy...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00511216
更新日期：1980-06-01 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：:Acinetobacter calcoaceticus LMD 79.41 produced significant amounts of pyrrolo-quinoline quinone (PQQ) in its culture medium when grown on quinic acid or shikimic acid. Studies with LMD 79.41 and PQQ- -mutants of this strain demonstrated that this organism contains an NAD(P)-independent quinate dehydrogenase (QDH) (EC ...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00409714
更新日期：1988-05-01 00:00:00
abstract：:An extremely thermophilic, sulfur-dependent archaeon, strain WT1, was isolated from a freshwater hot spring in the Lake Taupo area of North Island, New Zealand. The cells are flagellated, strictly anaerobic cocci that grow optimally at 85 degrees C and 5.4 g NaCl l(-1). The strain grows heterotrophically on complex pr...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s002030050745
更新日期：1999-08-01 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：:As the protein databases continue to expand at an exponential rate, fed by daily uploads from multiple large scale genomic and metagenomic projects, the problem of assigning a function to each new protein has become the focus of significant research interest in recent times. Herein, we review the most recent advances ...
journal_title：Archives of microbiology
pub_type： 杂志文章,评审
doi：10.1007/s00203-010-0549-9
更新日期：2010-03-01 00:00:00
abstract：:The gram-negative bacterium Myxobacter sp. AL-1 produces chitosanase-cellulase activity that is maximally excreted during the stationary phase of growth. Carboxymethylcellulase zymogram analysis revealed that the enzymatic activity was correlated with two bands of 32 and 35 kDa. Ion-exchange-chromatography-enriched pr...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s002030050505
更新日期：1997-10-01 00:00:00
abstract：:The ADPglucose pyrophosphorylases from Rhodopseudomonas sphaeroides and Rhodopseudomonas gelatinosa are activated by fructose-6-phosphate, pyruvate and fructose-1,6 biophosphate-P2. The effects of the activators are to increase significantly the Vmax of ADPglucose synthesis and to lower the S0.5 values (concentration ...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00421887
更新日期：1980-05-01 00:00:00
