Abstract：
:The natural role of antibiotics in the ecology of Streptomyces is debated and still largely unknown. The predatory myxobacteria and many other genera of prokaryotic epibiotic and wolfpack predators across different taxa possess secondary metabolites with antimicrobial action, and these compounds have a role in predation. If all epibiotic predators are antibiotic producers, it is worth testing whether all antibiotic producers are predators too. We show here that Streptomyces are non-obligate epibiotic predators of other microorganisms and that predatory abilities are widespread in this genus. We developed a test for predatory activity which revealed that a large proportion of traditionally isolated Streptomyces strains and all oligophilic Streptomyces isolates show predatory activity. Those that did not show predatory ability on first challenge could do so after many generations of selection or acclimation. Using time-lapse photomicrography, we demonstrate that the growth of the tips of Streptomyces hyphae is accompanied by disappearance of cells of other bacteria in the vicinity presumably due to lysis. Predatory activity is restricted to surface growth and is not obligately associated with antibiotic production in conventional culture. However, some of the genes crucial to the regulation of secondary metabolite pathways are differentially expressed during predatory growth on different prey species as compared to saprophytic growth. Our findings strengthen the association between epibiotic predation and antibiotic production.
journal_name
Arch Microbioljournal_title
Archives of microbiologyauthors
Kumbhar C,Mudliar P,Bhatia L,Kshirsagar A,Watve Mdoi
10.1007/s00203-014-0961-7subject
Has Abstractpub_date
2014-04-01 00:00:00pages
235-48issue
4eissn
0302-8933issn
1432-072Xjournal_volume
196pub_type
杂志文章abstract：:A novel actinomycete, strain PA1-10T, isolated from the leaf of Phyllanthus amarus collected from Bangkok, Thailand, was characterized taxonomically using a polyphasic approach. This strain contained the characteristics consistent with those of members of the genus Nonomuraea. It formed short rugose spore chain on aer...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-019-01717-w
更新日期：2020-01-01 00:00:00
abstract：:A Gram reaction-negative, strictly aerobic, non-motile, translucent and rod-shaped bacterium (designated W1-2-4(T)) isolated from tap water was characterized by a polyphasic approach to clarify its taxonomic position. Strain W1-2-4(T) was observed to grow optimally at 25-30 °C and at pH 6.5 on nutrient agar. Phylogene...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-016-1237-1
更新日期：2016-10-01 00:00:00
abstract：:The biosynthesis of the beta-glucosidase enzyme was studied in a transformed yeast obtained by cloning in Saccharomyces cerevisiae the structural gene coding for beta-glucosidase in Kluyveromyces fragilis. The enzyme biosynthesis was found to be non-adaptative, and repressed by glucose. These features are similar to t...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00402336
更新日期：1986-11-01 00:00:00
abstract：:In phototrophic and chemoautotrophic proteobacteria, genes encoding enzymes of the Calvin-Benson-Bassham pathway of CO2 fixation are often found in clusters that are transcribed from a single promoter under control of the LysR-type transcriptional activator, CbbR. Mutations affecting CbbR prevent induction of cbb gene...
journal_title：Archives of microbiology
pub_type： 杂志文章,评审
doi：10.1007/s002030050369
更新日期：1996-09-01 00:00:00
abstract：:Outer membrane vesicles (OMVs) are released from the outer membrane of Gram-negative bacteria. Moreover, Gram-positive bacteria also produce membrane-derived vesicles. As OMVs transport several bacterial components, especially from the cell envelope, their interaction with the host cell, with other bacteria or as immu...
journal_title：Archives of microbiology
pub_type： 杂志文章,评审
doi：10.1007/s00203-014-1042-7
更新日期：2015-01-01 00:00:00
abstract：:Studies are presented of the biliproteins of Anabaena sp. This filamentous cyanobacterium contains three major biliproteins. Whereas two of these, C-phycocyanin and allophycocyanin, are common to all cyanobacteria, the third, phycoerythrocyanin (gammamax approximately 568 nm) has hitherto not been described and its di...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00416970
更新日期：1976-10-11 00:00:00
abstract：:A complex polydispersity became apparent when the poly(glycerophosphate) lipoteichoic acid of Enterococcus faecalis was chromatographed on DEAE-Sephadex. The chain length varied between 13 and 33 glycerophosphate residues per lipid anchor. In parallel, the extent of chain glycosylation increased from 0.2 to 0.4 digluc...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00249103
更新日期：1992-01-01 00:00:00
abstract：:Some unicellular N(2)-fixing cyanobacteria have recently been found to lack a functional photosystem II of photosynthesis. Such organisms, provisionally termed UCYN-A, of the oceanic picoplanktion are major contributors to the global marine N-input by N(2)-fixation. Since their photosystem II is inactive, they can per...
journal_title：Archives of microbiology
pub_type： 杂志文章,评审
doi：10.1007/s00203-010-0621-5
更新日期：2010-10-01 00:00:00
abstract：:Histoplasma capsulatum yeast cells have been studied by immunoelectron microscopy using rabbit polyclonal antisera and a biotin-avidin-peroxidase detection system. An antigenic surface layer has been visualized in the cell wall of immunostained organisms. This layer was not seen in samples prepared by standard electro...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00693397
更新日期：1985-08-01 00:00:00
abstract：:We previously reported that double disruption of protein phosphatase (PPase) genes PTP2 (phosphotyrosine-specific PPase) and MSG5 (phosphotyrosine and phosphothreonine/serine-PPase) causes Ca(2+) sensitive growth, whereas the single disruptions do not. This finding suggests that Ptp2p and Msg5p are involved in Ca(2+)-...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-009-0498-3
更新日期：2009-09-01 00:00:00
abstract：:Gayal (Bos frontalis) of the Yunnan region is well adapted to harsh environmental conditions. Its diet consists predominantly of bamboo, reeds, and woody plants, suggesting that the rumen of this species contains many fiber-degrading bacteria and cellulases. The aim of this study was to identify and modify specific ce...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-020-01812-3
更新日期：2020-07-01 00:00:00
abstract：:Acinetobacter species remain alive in hospitals on various surfaces, both dry and moist, forming an important source of hospital infections. These bacteria are naturally resistant to many antibiotic classes. Although the role of the quorum sensing system in regulating the virulence factors of Acinetobacter species has...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-017-1408-8
更新日期：2017-12-01 00:00:00
abstract：:The growth, duplication and fate of multikaryotic hyphae bearing true clamp connections, as derived from compatible matings of Schizophyllum commune, were studied by phase contrast microscopy. The nuclei (N) of multikaryotic apices maintained a near central position during hyphal growth. True clamp connection formatio...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00406155
更新日期：1980-12-01 00:00:00
abstract：:Beta-Lactamase (penicillinase) activity was found in a number of strains of blue-green algea. In some cases, this enzyme permitted algae to overcome the inhibitory effects of penicillin. Production and localization of beta-lactamase were studied in a unicellular species, Coccochloris elabens (strain 7003), and in a fi...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00429338
更新日期：1977-03-01 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 subtype of phosphofructokinase activity, either ATP-, ADP- or pyrophosphate-dependent, present in members of three genera from the Spirochaetales was investigated. The individual species/strains examined included Spirochaeta alkalica, S. asiatica, S. halophila, S. isovalerica, S. litoralis, S. zuelzerae, S. thermo...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s002030050777
更新日期：1999-12-01 00:00:00
abstract：:Two bacterial isolates from Great Bay Estuary, New Hampshire, in co-culture carried out anaerobic dissimilation of citric acid with Fe(III) as the terminal electron acceptor. Neither isolate oxidized citrate with Fe(III) anaerobically in axenic culture. The Fe(III) reducer, Shewanella alga strain BrY, did not grow ana...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s002030050383
更新日期：1996-10-17 00:00:00
abstract：:Thermotoga hypogea is an extremely thermophilic anaerobic bacterium capable of growing at 90 degrees C. It uses carbohydrates and peptides as carbon and energy sources to produce acetate, CO(2), H(2), L-alanine and ethanol as end products. Alcohol dehydrogenase activity was found to be present in the soluble fraction ...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-007-0217-x
更新日期：2007-06-01 00:00:00
abstract：:Pulicat Lake sediments are often severely polluted with the toxic heavy metal mercury. Several mercury-resistant strains of Bacillus species were isolated from the sediments and all the isolates exhibited broad spectrum resistance (resistance to both organic and inorganic mercuric compounds). Plasmid curing assay show...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-006-0088-6
更新日期：2006-04-01 00:00:00
abstract：:Although, there have been many published bacterial strains aerobically degrading the heterocyclic amine compounds, only one strain to date has been reported to degrade pyrrolidine under denitrifying conditions. In this study, denitrifying bacteria degrading pyrrolidine and piperidine were isolated from diverse geologi...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-008-0452-9
更新日期：2009-04-01 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：:A gram-negative bacterium designated BN30(T), which is motile with a polar flagellum, non-endospores forming, oxidase- and catalase-positive, was isolated from soybean root nodule. The organism is facultative anaerobic and surface-wrinkled rod. It can grow at 10-40 °C, pH 6-8 and 6 % (w/v) NaCl. BLASTn search based on...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-015-1102-7
更新日期：2015-06-01 00:00:00
abstract：:In this study, on evaluating the physiological function and mechanism of putrescine, we found that putrescine supplementation (1 mM) increases transcription of the putrescine aminotransferase gene, ygjG. Putrescine-dependent expression was confirmed by measuring β-galactosidase activity and with reverse transcription-...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-014-0991-1
更新日期：2014-09-01 00:00:00
abstract：:We previously constructed an arabinose-inducible recombinant Bifidobacterium longum that could efficiently express secreted IFN-alpha2b in vitro (Deng et al. in Arch Microbiol 191:681-686, 2009). Here, we investigated the influence of oral pBAD-SPIFN-transformed B. longum on immunomodulation and IFN-induced Mx1 gene t...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-010-0589-1
更新日期：2010-08-01 00:00:00
abstract：:Hyphal development in Candida albicans was blocked by EDTA. This effect was not due to a general growth inhibition since the chelator did not affect protein and DNA synthesis. Recovery of mycelial growth was observed when EDTA-grown cells were incubated at 37 degrees C in EDTA-free medium. High-molecular-weight mannop...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00307769
更新日期：1994-01-01 00:00:00
abstract：:A thermostable homodimeric isocitrate dehydrogenase from the hyperthermophilic sulfate-reducing archaeon Archaeoglobus fulgidus was purified and characterized. The mol. mass of the isocitrate dehydrogenase subunit was 42 kDa as determined by SDS-PAGE. Following separation by SDS-PAGE, A. fulgidus isocitrate dehydrogen...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s002030050516
更新日期：1997-11-01 00:00:00
abstract：:Video-enhanced light microscopy of the apical and subapical regions of growing hyphae of several fungal species revealed the existence of momentary synchronized motions of subcellular organelles. First discovered in a temperature-sensitive morphological mutant (ramosa-1) of Aspergillus niger, these seemingly spontaneo...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-005-0771-z
更新日期：2005-05-01 00:00:00
abstract：:A total of 13 killer toxin producing strains belonging to the genera Saccharomyces, Candida and Pichia were tested against each other and against a sensitive yeast strain. Based on the activity of the toxins 4 different toxins of Saccharomyces cerevisiae, 2 different toxins of Pichia and one toxin of Candida were reco...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00410734
更新日期：1984-04-01 00:00:00
abstract：:N-Formylmaleamic acid, a probable intermediate in the bacterial metabolism of nicotinic acid, has been synthesized by photoisomerization of its trans isomer, N-formylfumaramic acid. The compound previously reported to be N-formylmaleamic acid has been shown to be N-formylfumaramic acid. ...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/BF00416972
更新日期：1976-10-11 00:00:00
abstract：:The diversity of eukaryotic populations, in particular protozoa, in the water supplies of intensively reared broilers has not been previously studied. This important food-rearing environment was screened for the molecular diversity of eukaryotes by the analysis of PCR-amplified 18S rRNA. DNA was extracted from filtere...
journal_title：Archives of microbiology
pub_type： 杂志文章
doi：10.1007/s00203-006-0119-3
更新日期：2006-07-01 00:00:00
