Abstract:
:The natural biodiversity that is found in tropical areas offers countless biotechnological opportunities; especially if we take in account that many biomolecules from several microorganisms have supported for many years, different industrial applications in areas such as pharmacology, agro-industry, bioprocess, environmental technology, and bioconversion. In order to find new lignocellulolytic enzymes and evaluate bamboo fibers as substrate, Schizophyllum commune a fungus with broad distribution was isolated and grown during 15 days in liquid culture medium containing 1% lignocellulosic fibers from bamboo, banana stem, and sugarcane bagasse. The enzymatic activity of xylanase, mannanase, polygalacturonase, CMCase, FPase, and avicelase were evaluated. Sugarcane bagasse and banana stem showed to induce higher hollocellulase activity when compared with bamboo as the main carbon source. The physical mechanism that the fungus uses to degrade bamboo was observed not only in fibers naturally infected but also in healthy fibers that were treated and untreated with enzyme solution. SEM analysis showed the structural disruption and invasion of the vascular bundles, parenchyma cells, and parenchymatous tissues as a consequence of the presence of this fungus and the catalytic action of its enzymes into the plant tissue.
journal_name
Curr Microbioljournal_title
Current microbiologyauthors
Arboleda Valencia JW,Valencia Jiménez A,Gonçalves de Siqueira F,Dussan Medina K,Restrepo Franco GM,Filho EX,Siegfried BD,Grossi-de-Sa MFdoi
10.1007/s00284-011-0023-1subject
Has Abstractpub_date
2011-12-01 00:00:00pages
581-7issue
6eissn
0343-8651issn
1432-0991journal_volume
63pub_type
杂志文章abstract::A Gram-negative, motile, aerobic and coccoid rod-shaped bacterium, designated strain YIM132180T, was isolated from a Lepraria sp. lichen collected from Pu'er, Yunnan Province, China. The strain grew at 15-35 °C (optimum, 25-28 °C), at 0-2% (w/v) NaCl (optimum, 0-1%) and at pH 6.0-9.0 (optimum, pH 7.0). The 16S rRNA ge...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-019-01826-1
更新日期:2020-02-01 00:00:00
abstract::Sequence analysis of dnaE, hlyA, and asd housekeeping genes were used to determine the genetic relatedness of our collection of Vibrio cholerae isolated from patients and surface waters over a 5-year period in Iran. The results showed 41, 17, and 9 variable sites throughout the sequenced fragments of dnaE (837 bp), hl...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-013-0324-7
更新日期:2013-07-01 00:00:00
abstract::The aim of this study is to investigate the combination of cefepime and sulbactam. Sulbactam, when administered , will effectively inhibit all Extended-spectrum beta lactamases (ESBLs) of the microorganism, while cefepime will inhibit the growth of the resistant microorganisms since it will not be hydrolyzed by OXA-48...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-020-02094-0
更新日期:2020-09-01 00:00:00
abstract::Thirty-one Listeria strains were tested for sensitivity to four class IIa bacteriocins, namely, enterocin A, mesentericin Y105, divercin V41, and pediocin AcH, and to nisin A. Class IIa bacteriocins displayed surprisingly similar antimicrobial patterns ranging from highly susceptible to fully resistant strains, wherea...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s002840010081
更新日期:2000-07-01 00:00:00
abstract::Rhesus monkey TRIM5α (TRIM5α(rh)), a member of the tripartite motif (TRIM) family, was identified as the main restriction factor responsible for resistance of old world monkey cells to HIV-1 infection. However, the precise mechanism of HIV-1 infection inhibition by TRIM5α remains elusive and appears to be related to s...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-011-0009-z
更新日期:2011-12-01 00:00:00
abstract::A bacterium capable of utilizing p-cresol as sole source of carbon and energy was isolated from soil and identified as a Bacillus species. The organism also utilized phenol, o-cresol, m-cresol, 4-hydroxybenzoic acid, and gentisic acid as growth substrates. The organism degraded p-cresol to 4-hydroxybenzoic acid, which...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-006-0309-x
更新日期:2006-12-01 00:00:00
abstract::The spread of antibiotic resistance is rapidly threatening the effectiveness of antibiotics in the clinical setting. Many infections are being caused by known and unknown pathogenic bacteria that are resistant to many or all antibiotics currently available. Empedobacter falsenii is a nosocomial pathogen that can cause...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-018-1498-9
更新日期:2018-08-01 00:00:00
abstract::We present a novel light-dependent metabolism of an aromatic compound (trans-cinnamate) that is assimilatory rather than dissimilatory. Light-dependent assimilation of trans-cinnamate was observed by both growing and resting cells of Rhodobacter sphaeroides OU5. Trans-cinnamate assimilation could be correlated with si...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-006-0440-8
更新日期:2007-06-01 00:00:00
abstract::Regulated secretory proteins are sorted via selective co-aggregation in eukaryotes. Cellobiase (C) of the filamentous fungus Termitomyces clypeatus remained co-aggregated with sucrase (S), and only one isoform of each of the enzymes was present in intra- and extracellular extracts. Kinetics of secretion of sucrase inc...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-001-7001-y
更新日期:2002-07-01 00:00:00
abstract::Pathogens have evolved an array of strategies to establish a productive infection. The extracellular proteins secreted by pathogens are one of unique mechanisms to evade the host innate immune response. Many secretory proteins transported by the bacterial secretion systems have been widely investigated in Salmonella. ...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-020-02201-1
更新日期:2020-11-01 00:00:00
abstract::The establishment of human flora-associated animal models allows the in vivo manipulation of host, microbial, and environmental parameters to influence the gut microbial community. However, it is difficult to simulate infant gut microbiota in germ-free animals because of the variation and dynamic state of infant micro...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-013-0360-3
更新日期:2013-09-01 00:00:00
abstract::In this study, the rumen was assessed for its potential to detoxify RDX using molecular microbial ecology as well as analytical chemistry techniques. Results indicated significant loss (P < 0.05) of RDX in <8-h post incubation, and qualitative LC-MS/MS analysis showed evidence for the formation of 1-NO-RDX (M-O + HCOO...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-012-0144-1
更新日期:2012-08-01 00:00:00
abstract::From an undisturbed natural forest soil in Ecuador, three fungal strains of the genus Aspergillus were isolated. Based on molecular and morphological features they are described as three new species, named A. quitensis, A. amazonicus, and A. ecuadorensis. ...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-008-9178-9
更新日期:2008-09-01 00:00:00
abstract::In laboratory cultures of ice nucleation-active (Ice+) Erwinia herbicola isolates, it has been difficult to achieve high-level expression of ice nuclei, especially nuclei active at temperatures warmer than -5 degrees C (i.e., type 1 ice nuclei). Here we demonstrate that starvation for phosphate and exposure to low tem...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s002849900325
更新日期:1998-06-01 00:00:00
abstract::A moderately psychrophilic bacterium Corynebacterium paurometabolum MTCC 6841 (gram positive, short rod type) producing extracellular alkaline lipase was isolated from Lake Naukuchiatal, Uttaranchal, India. The bacterium was able to grow within a broad range of pH (5-10). Soyabean oil and olive oil served as the best ...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-005-0224-6
更新日期:2006-05-01 00:00:00
abstract::This study was undertaken to identify exopolysaccharide-producing bacteria gathered from 18 hypersaline habitats. Phenotypic studies performed with 134 isolates revealed the majority of them to be Gram-negative rods with respiratory metabolism, belonging to the genus Halomonas. A numerical analysis of the 114 phenotyp...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-003-4208-0
更新日期:2004-05-01 00:00:00
abstract::The genus Acinetobacter has been recognized to take up exogenous DNA from the environment. In this study, we conducted natural transformation with a novel diesel-degrading Acinetobacter sp. strain, designated strain DR1, using the broad host range plasmid pRK415. Many factors, including temperature, quantities of DNA,...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-010-9698-y
更新日期:2011-01-01 00:00:00
abstract::Lactic and butyric acid production by bacterial flocs in a continuous culture obeyed different physiological constraints. The butyric acid rate of production was constant and independent of the growth rate [0.012 +/- 0.001 gBUT/(L.h)], whereas lactic fermentation occurred only beyond a critical growth rate (0.25 +/- 0...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-003-4169-3
更新日期:2004-03-01 00:00:00
abstract::The current status of Helicobacter contamination of laboratory mice, rats, gerbils, and house musk shrews from 47, 10, 4, and 3 colonies, respectively, in Japan was studied. Helicobacter was detected by reverse transcription (RT)-nested polymerase chain reaction (PCR) with Helicobacter genus-specific primers by using ...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s002840010111
更新日期:2000-09-01 00:00:00
abstract::Six cyclohexylacetic acid-degrading strains were isolated from soil samples in Japan and identified as members of the genera Cupriavidus (strain KUA-1), Rhodococcus, and Dietzia by 16S rRNA gene sequence analysis. For the first time members of these genera were shown to be capable of degrading cyclohexylacetic acid. A...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-008-9158-0
更新日期:2008-08-01 00:00:00
abstract::Strains of Vibrio cholerae O1 (Ogawa, Inaba) and non-O1 serogroups have been found to produce an elastolytic protease that can be detected on 0.3% elastin agar plates or in broth cultures. The elastase enzyme appears to be maximally expressed in late log phase (14-18 h postinoculation) and has optimum activity at a pH...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s002849900421
更新日期:1999-08-01 00:00:00
abstract::The DNA sequence was determined for a region upstream of the puf operon of Rhodospirillum rubrum. A partial ORF was identified. The DNA sequence and the inferred amino acid sequences were aligned with those of bchA of Rhodobacter capsulatus and other phototrophic bacteria. Based on this alignment and genetic evidence,...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/BF01570863
更新日期:1993-08-01 00:00:00
abstract::Insecticidal proteins produced by strains of Bacillus thuringenesis are specific toward target pests. One of the Bt proteins, Cry 1Ac has been used successfully for controlling crop predation by polyphagous pests Helicoverpa armigera. Structurally, Bt proteins consist of three domains; domain I and III are fairly homo...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-010-9749-4
更新日期:2011-02-01 00:00:00
abstract::Glutamine synthetase (GS) fromBeneckea alginolytica strain 90 was purified to homogeneity as indicated by sodium dodecyl sulface polyacrylamide gel electrophoresis. The purified enzyme was injected into rabbits, and the antiserum, as well as previously prepared antiserum against the GS fromEscherichia coli, was used i...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/BF02602446
更新日期:1980-07-01 00:00:00
abstract::The cbbF genes of the facultative chemoautotroph Alcaligenes eutrophus H16 are part of two highly homologous cbb operons. Both the chromosomal and the megaplasmid pHG1-borne copy of cbbF were cloned and sequenced. Subsequent analyses including comparison with known sequences from other organisms and heterologous expre...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/BF00294635
更新日期:1995-07-01 00:00:00
abstract::Rep22 is the replication region of the lactococcal theta replicating pUCL22 plasmid. The copy number of Rep22-based plasmids in Lactococcus was determined by using a chromosomal DNA fragment from Lactococcus lactis subsp. lactis MMS368 as reference. Segregational behavior appeared to be linked to copy number and there...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/BF00294521
更新日期:1995-01-01 00:00:00
abstract::Genetic engineering of microbes for commercial metabolite production traditionally has sought to alter the levels and/or intrinsic activities of key enzymes in relevant biosynthetic pathway(s). Microorganisms exploit similar strategies for flux control, but also coordinate flux through sets of related pathways by usin...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s002840010255
更新日期:2001-07-01 00:00:00
abstract::Native perennial legume Adesmia bicolor reveals characteristics that are key to securing persistence under grazing. Literature on the diversity and symbiotic effectiveness of indigenous rhizobia-nodulating A. bicolor in central Argentina is limited. The purpose of this study was therefore to determine phenotypic and g...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-012-0260-y
更新日期:2013-02-01 00:00:00
abstract::Bacterial fish pathogens are pervasive in aquaculture. Control of bacterial fish pathogen is a difficult task among aquaculture practitioners. A large number of antibiotics are used for the control of prevalent bacterial pathogens in aquaculture. This may lead to drug resistance among pathogens and further treatment w...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s00284-018-1506-0
更新日期:2018-09-01 00:00:00
abstract::Maize root colonization by two fluorescentPseudomonas strains M.3.1. and TR335, isolated respectively frommaize and tomato roots, were studied in hydroponic conditions. Each bacteriumwas inoculated separately, and three different colonization areas werestudied: nutrient solution, rhizoplane, and endorhizosphere. The t...
journal_title:Current microbiology
pub_type: 杂志文章
doi:10.1007/s002849900185
更新日期:1997-05-01 00:00:00