Abstract:
:Protoplasts of Claviceps purpurea were prepared by treatment of mycelium with a lytic mixture of snail gut enzyme and cellulase from Trichoderma viride. Such protoplasts could be efficiently lysed by Triton X-100 treatment at high osmotic pressure without Ca or Mg, allowing the release of intact vacuoles in high yields. Vacuoles obtained from cells grown in modified Vogel medium (vegetative-type cells not producing alkaloids) were isolated and purified by centrifugation from a 5% Ficoll 400 (wt/vol) phase into the interphase between two layers, one containing 0.25 M each of mannitol and sucrose, and one containing 0.5 M mannitol. Vacuoles derived from cells grown in a medium favoring ergot alkaloid synthesis (sclerotia-like cells) were isolated by gentle centrifugation of filtered protoplast lysates without addition of Ficoll 400. Biochemical analyses of the vacuole fraction isolated from either kind of cell revealed their function as compartments harboring several hydrolytic enzymes. However, the enrichment of free amino acids in vacuoles of sclerotia-like cells was less pronounced than that in vacuoles of vegetative-type cells, indicating a difference in metabolic compartmentation in the two types of cells.
journal_name
Appl Environ Microbioljournal_title
Applied and environmental microbiologyauthors
Keller U,Madry N,Kleinkauf H,Glund Kdoi
10.1128/AEM.47.4.710-714.1984keywords:
subject
Has Abstractpub_date
1984-04-01 00:00:00pages
710-4issue
4eissn
0099-2240issn
1098-5336journal_volume
47pub_type
杂志文章abstract::Filamentous, gliding, sulfide-oxidizing bacteria of the genus Thioploca were found on sediments in profundal areas of Lake Biwa, a Japanese freshwater mesotrophic lake, and were characterized morphologically and phylogenetically. The Lake Biwa Thioploca resembled morphologically Thioploca ingrica, a brackish water spe...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.69.1.390-398.2003
更新日期:2003-01-01 00:00:00
abstract::Addition of sodium isoascorbate to the formulation for perishable canned comminuted cured meat markedly enhanced the efficacy of nitrite against Clostridium botulinum. This effect was reproducible through a series of three tests. In one test it was found that the initial addition of 50 microgram of sodium nitrite per ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.35.1.59-61.1978
更新日期:1978-01-01 00:00:00
abstract::Cytochrome c(3) from Desulfovibrio vulgaris Miyazaki F was successfully expressed in the facultative aerobe Shewanella oneidensis MR-1 under anaerobic, microaerophilic, and aerobic conditions, with yields of 0.3 to 0.5 mg of cytochrome/g of cells. A derivative of the broad-host-range plasmid pRK415 containing the cyto...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.66.9.4168-4171.2000
更新日期:2000-09-01 00:00:00
abstract::Biochemical and proteomic tools have been utilized for investigating the mechanism of action of a new Stenotrophomonas maltophilia strain (SeITE02), a gammaproteobacterium capable of resistance to high concentrations of selenite [SeO(3)(2-), Se(IV)], reducing it to nontoxic elemental selenium under aerobic conditions;...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00957-07
更新日期:2007-11-01 00:00:00
abstract::Production of bacteriocin activity designated pediocin PA-1 was associated with the presence of a 6.2-megadalton plasmid in Pediococcus acidilactici PAC1.0. The bacteriocin exhibited activity against P. acidilactici, P. pentosaceus, Lactobacillus plantarum, L. casei, L. bifermentans, and Leuconostoc mesenteroides subs...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.53.10.2534-2538.1987
更新日期:1987-10-01 00:00:00
abstract::Protein disulfide isomerase (PDI) is important in assisting the folding and maturation of secretory proteins in eukaryotes. A gene, pdiA, encoding PDIA was previously isolated from Aspergillus niger, and we report its functional characterization here. Functional analysis of PDIA showed that it catalyzes the refolding ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.66.2.775-782.2000
更新日期:2000-02-01 00:00:00
abstract::The restriction endonuclease Cac824I has been shown to be a major barrier to electrotransformation of Clostridium acetobutylicum ATCC 824 (L. D. Mermelstein, N. E. Welker, G. N. Bennett, and E. T. Papoutsakis, Bio/Technology 10:190-195, 1992). Methylation by the phi 3T I methyltransferase encoded by Bacillus subtilis ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.59.4.1077-1081.1993
更新日期:1993-04-01 00:00:00
abstract::The Cry2Aa3 gene was introduced into asporogenic Bacillus thuringiensis, and the synthesized protoxin killed Bombyx mori and Lymantria dispar larvae. Chymotrypsin hydrolyzed the linkages between 49Tyr/Val50 and 145Lys/Ser146 in the protoxin, and 50- and 58-kDa fragments were generated, respectively. Both peptides kill...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.07123-11
更新日期:2012-07-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00379-20
更新日期:2020-07-02 00:00:00
abstract::Cells of a newly isolated environmental strain of Candida humicola accumulated 10-fold more polyphosphate (polyP), during active growth, when grown in complete glucose-mineral salts medium at pH 5.5 than when grown at pH 7.5. Neither phosphate starvation, nutrient limitation, nor anaerobiosis was required to induce po...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.66.9.4068-4073.2000
更新日期:2000-09-01 00:00:00
abstract::An extracellular serine protease produced by a mutant, M1, derived from Streptomyces albogriseolus S-3253 that no longer produces a protease inhibitor (Streptomyces subtilisin inhibitor [SSI]) was isolated. A 20-kDa protein was purified by its affinity for SSI and designated SAM-P20. The amino acid sequence of the ami...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.61.1.180-186.1995
更新日期:1995-01-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.72.1.793-801.2006
更新日期:2006-01-01 00:00:00
abstract::Perchlorate is a known health hazard for humans, fish, and other species. Therefore, it is important to assess the response of an ecosystem exposed to perchlorate contamination. The data reported here show that a liquid chromatography-mass spectrometry-based proteomics approach for the detection of perchlorate-reducin...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.01323-10
更新日期:2011-02-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.01625-06
更新日期:2007-01-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.72.2.1302-1309.2006
更新日期:2006-02-01 00:00:00
abstract::The harvesting of rainwater is gaining acceptance among many governmental authorities in countries such as Australia, Germany, and South Africa, among others. However, conflicting reports on the microbial quality of harvested rainwater have been published. To monitor the presence of potential pathogenic bacteria durin...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.04130-13
更新日期:2014-04-01 00:00:00
abstract::Two hybrid bacteriocins, enterocin E50-52/pediocin PA-1 (EP) and pediocin PA-1/enterocin E50-52 (PE), were designed by combining the N terminus of enterocin E50-52 and the C terminus of pediocin PA-1 and by combining the C terminus of pediocin PA-1 and the N terminus of enterocin E50-52, respectively. Both hybrid bact...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.03477-14
更新日期:2015-03-01 00:00:00
abstract::Enterotoxin-positive (Ent+) and enterotoxin-negative (Ent-) strains of Clostridium perfringens were cultured in Duncan-Strong sporulation medium containing starch at 37 and 46 degrees C. At 37 degrees C, all strains degraded starch and sporulated well. However, only Ent- strains could hydrolyze starch, grow extensivel...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.58.1.326-330.1992
更新日期:1992-01-01 00:00:00
abstract::IncQ marker plasmids were previously constructed to enable the analysis of the survival of populations of Pseudomonas putida released into lake water (C. Winstanley, J. A. W. Morgan, R. W. Pickup, J. G. Jones, and J. R. Saunders, Appl. Environ. Microbiol. 55:771-777, 1989). We constructed equivalent IncP plasmids, pLV...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.57.7.1905-1913.1991
更新日期:1991-07-01 00:00:00
abstract::Symbioses with gut microorganisms provides a means by which terrestrial herbivores are able to obtain energy. These microorganisms ferment cell wall materials of plants to short-chain fatty acids (SCFA), which are then absorbed and used by the host animal. Many marine herbivorous fishes contain SCFA (predominantly ace...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.68.3.1374-1380.2002
更新日期:2002-03-01 00:00:00
abstract::Pesticides are key stressors of soil microorganisms with reciprocal effects on ecosystem functioning. These effects have been mainly attributed to the parent compounds, while the impact of their transformation products (TPs) has been largely overlooked. We assessed in a meadow soil (soil A) the transformation of iprod...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.01536-18
更新日期:2018-10-30 00:00:00
abstract::The Tinto River (Huelva, southwestern Spain) is an extreme environment with a rather constant acidic pH along the entire river and a high concentration of heavy metals. The extreme conditions of the Tinto ecosystem are generated by the metabolic activity of chemolithotrophic microorganisms thriving in the rich complex...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.69.8.4853-4865.2003
更新日期:2003-08-01 00:00:00
abstract::Streptomyces exfoliatus SMF19 produced two types of extracellular beta-lactamase-inhibiting proteins, 48 (beta LIP-I) and 33 (beta LIP-II) kDa. The inhibition mode of beta LIP-I on Bacto Penase and benzylpenicillin as substrates was uncompetitive (i.e., both Km and Vmax were changed), while that of beta LIP-II was non...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.60.3.1029-1032.1994
更新日期:1994-03-01 00:00:00
abstract::Isolates of the obligately biotrophic fungus Uncinula necator cluster in three distinct genetic groups (groups I, II, and III). We designed PCR primers specific for these groups in order to monitor field populations of U. necator. We used the nucleotide sequences of the gene that encodes eburicol 14alpha-demethylase (...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.65.9.3950-3954.1999
更新日期:1999-09-01 00:00:00
abstract::Due to concerns about a link between variant Creutzfeldt-Jakob disease in humans and similar prion protein-induced disease in cattle, i.e., bovine spongiform encephalopathy (BSE), strict controls are in place to exclude BSE-positive animals and/or specified risk materials including bovine central nervous system (CNS) ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/aem.68.2.791-798.2002
更新日期:2002-02-01 00:00:00
abstract::Salmonella enterica serovar Enteritidis strain E40 filaments were developed under conditions of a reduced water activity (a(w)) of 0.95 in tryptic soy broth (TSB) or tryptic soy agar (TSA) supplemented with 8% or 7% NaCl, respectively. Filament formation was accompanied by an increase of biomass without an increase in...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.06774-11
更新日期:2012-04-01 00:00:00
abstract::High-throughput sequencing of the taxonomically informative 16S rRNA gene provides a powerful approach for exploring microbial diversity. Here we compare the performances of two common "benchtop" sequencing platforms, Illumina MiSeq and Ion Torrent Personal Genome Machine (PGM), for bacterial community profiling by 16...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.02206-14
更新日期:2014-12-01 00:00:00
abstract::A 15-mer peptide fragment derived from pediocin PA-1 (from residue 20 to residue 34) specifically inhibited the bactericidal activity of pediocin PA-1. The fragment did not inhibit the pediocin-like bacteriocins sakacin P, leucocin A, and curvacin A to nearly the same extent as it inhibited pediocin PA-1. Enterocin A,...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.64.12.5057-5060.1998
更新日期:1998-12-01 00:00:00
abstract::Celiac disease (CD) is an immune-mediated enteropathy triggered by the ingestion of cereal gluten proteins. This disorder is associated with imbalances in the gut microbiota composition that could be involved in the pathogenesis of CD. The aim of this study was to characterize the composition and diversity of the cult...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00869-13
更新日期:2013-09-01 00:00:00
abstract::Microbial transformation of lapachol, a naturally occurring naphthoquinone, was carried out by Curvularia lunata (NRRL 2178). The fungus brings about oxidative cyclization of the substrate to dehydro-alpha-lapachone, which was isolated and characterized by nuclear magnetic resonance and mass spectral analyses; its str...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.38.2.311-313.1979
更新日期:1979-08-01 00:00:00