Abstract:
:This paper deals with the interactions of chromium (Cr) with biological systems, focusing in particular on yeasts and fungi. These interactions are analysed with primarily regard to biochemical functions, but higher levels of organization are also considered. Thus, the morphological and cytological characteristics of selected microorganisms in response to exposure to chromium ions are evaluated. The different oxidation states of chromium and reactive oxygen species (ROS) generated in redox reactions with chromium ions are presented and characterized. The interactions of the most exposed subcellular structures, including the cell wall, plasma membrane and nuclei, have been deeply investigated in recent years, for two major reasons. The first is the toxicity of chromium ions and their strong impact on the metabolism of many species, ranging from microbes to humans. The second is the still disputed usefulness of chromium ions, and in particular trivalent chromium, in the glucose and fat metabolisms. Chromium pollution is still an important issue in many regions of the world, and various solutions have been proposed for the bioremediation of soil and water with selected microbial species. Yeasts and especially moulds have been most widely investigated from this aspect, and the biosorption and bioaccumulation of chromium for bioremediation purposes have been demonstrated. Accordingly, the mechanisms of chromium tolerance or resistance of selected microbes are of particular importance in both bioremediation and waste water treatment technologies. The mechanisms of chromium toxicity and detoxification have been studied extensively in yeasts and fungi, and some promising results have emerged in this area.
journal_name
J Basic Microbioljournal_title
Journal of basic microbiologyauthors
Poljsak B,Pócsi I,Raspor P,Pesti Mdoi
10.1002/jobm.200900170subject
Has Abstractpub_date
2010-02-01 00:00:00pages
21-36issue
1eissn
0233-111Xissn
1521-4028journal_volume
50pub_type
杂志文章,评审abstract::Vibrio parahaemolyticus has long been known pathogenic to shrimp but only recently it is also reported pathogenic to tropical cultured marine finfish. Traditionally, bacterial diseases in aquaculture are often treated using synthetic antibiotics but concern due to side effects of these chemicals is elevating hence, ne...
journal_title:Journal of basic microbiology
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doi:10.1002/jobm.201500611
更新日期:2016-08-01 00:00:00
abstract::In this study, diisodecyl phthalate (DIDP) was efficiently degraded by Bacillus sp. SB-007. The optimal conditions for DIDP (100 mg l(-1)) degradation by Bacillus sp. SB-007 in a mineral salts medium were found to be pH 7.0 at 30 degrees C, stirring at 200 rpm. The specific rate of DIDP degradation was found to be con...
journal_title:Journal of basic microbiology
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doi:10.1002/jobm.200800297
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abstract::Aspergillus nidulans produces sterigmatocystin, a secondary metabolite mycotoxin, for the protection of its reproductive structures. Previous studies on grazing behavior of fungivore arthropods, regulation of sexual development, and secondary metabolite biosynthesis have revealed the association of sterigmatocystin bi...
journal_title:Journal of basic microbiology
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abstract::The close linkage between hisI and mutations of the cysII group in Pseudomonas aeruginosa was confirmed by mapping experiments with new mutants. All mutants of the cysII group were blocked in the cysteine biosynthesis before sulfite (this include the mutant cys-5605 which had previously been mapped by Mee and Lee, 196...
journal_title:Journal of basic microbiology
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doi:10.1002/jobm.3620260120
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abstract::A mosquitocidal soil isolate of Bacillus thuringiensis serovar fukuokaensis (H3ade) produced spherical parasporal inclusions measuring 0.6-0.7 microm in diameter. Inclusion matrix was homogeneous substance surrounded by a thick, highly electron-dense envelope 30-50 nm in thickness. The envelopes were associated with b...
journal_title:Journal of basic microbiology
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abstract::beta -Glucosidase is a highly desired glycosidase, especially for hydrolysis of glycoconjugated precursors in musts and wines for the release of active aromatic compounds. A Shewanella sp. G5 strain was isolated from the intestinal content of benthonic organism (Munida subrrugosa) from different coastal areas of the B...
journal_title:Journal of basic microbiology
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abstract::Two strains of 64 endophytic bacteria, Bacillus cereus Si-Ps1 and Pseudomonas azotoformans La-Pot3-3, isolated from Citrus sinensis and C. sinensis var. Thomson's leaves, respectively, reduced N-acyl homoserine-based quorum sensing in bioindicator strain Pseudomonas syringae pv. syringae (Pss) B728a and the biofilm pr...
journal_title:Journal of basic microbiology
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abstract::Yarrowia lipolytica yeast was grown batchwise on n-hexadecane as the carbon and energy source. Two cerebroside species were quantitatively isolated from sphingolipid fractions of total lipids by a combination of column chromatography and preparative high-performance thin-layer chromatography. The cerebroside content a...
journal_title:Journal of basic microbiology
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doi:10.1002/jobm.200310337
更新日期:2004-01-01 00:00:00
abstract::This work reports the production of a novel serine protease enzyme (P. dig-protease) from the fungus Penicillium digitatum. The protease was purified from the culture supernatant to homogeneity using ammonium sulfate precipitation, Sephadex G-150 gel filtration and carboxymethyl-sepharose ion exchange chromatography w...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.201400179
更新日期:2014-07-01 00:00:00
abstract::Xylella fastidiosa, the causal agent of citrus variegated chlorosis (CVC), colonizes plant xylem, reducing sap flow, and inducing internerval chlorosis, leaf size reduction, necrosis, and harder and smaller fruits. This bacterium may be transmitted from plant to plant by sharpshooter insects, including Bucephalogonia ...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.201400916
更新日期:2015-12-01 00:00:00
abstract::Intracellular aminopeptidase synthesized by a soil strain of Pseudomonas sp. was purified 323-fold using the following procedure: saturation with ammonium sulfate, separation by preparative electrophoresis, anion-exchange chromatography and gel filtration chromatography. Molecular weight of the enzyme determined accor...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/1521-4028(200208)42:4<260::AID-JOBM260>3.0
更新日期:2002-01-01 00:00:00
abstract::Penicillium chrysogenum secretes a low molecular weight, cationic and cysteine-rich protein (PAF). It has growth inhibitory activity against the model organism Aspergillus nidulans and numerous zoo- and phytopathogenic fungi but shows only minimal conditional antifungal activity against the producing organism itself. ...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.201000321
更新日期:2011-06-01 00:00:00
abstract::Candida albicans supernatants contain a mixture of autoregulatory alcohols. In vitro, when added individually or in combination, these alcohols inhibit the yeast to filamentous form conversion. Here we evaluate the in vivo effect of the exogenous administration of a Cocktail solution simulating the composition of alco...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.201100158
更新日期:2012-08-01 00:00:00
abstract::An extracellular cold-adapted alkaline lipase from the psychrotrophic Yersinia enterocolitica strain KM1 was purified 26-fold to homogeneity. The enzyme was active over a broad range spanning 0-60 °C with an optimum activity at 37 °C, and it was found to be alkaline-preferring with an optimum activity at pH 9.0. The m...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.201400730
更新日期:2015-06-01 00:00:00
abstract::The ability of four strains of Aspergillus parasiticus (IMI 301,001) and two strains of Aspergillus flavus (IMI 300,998) to produce aflatoxins on Nigerian groundnuts under varying conditions of temperature was studied. While all the A. parasiticus strains produced the four major aflatoxins (B1, B2, G1, G2), only aflat...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.3620270910
更新日期:1987-01-01 00:00:00
abstract::A soluble, NADP+-dependent alcohol dehydrogenase (ADH) with a pH optimum at 8.7 was found in A. calcoaceticus EB 104 after growth on different carbon sources. n-Alkanols with short and medium chain length were employed as test substrates. The Km values decreased with increasing chain length. The Vmax values remained n...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.3620260611
更新日期:1986-01-01 00:00:00
abstract::The objectives of the present study were to purify and assess the killer toxin effect produced by Aureobasidium pullulans under casual agents of green mold (Penicillum digitatum) and sour rot (Geotrichum citri-aurantii). Initially, different methods of protein precipitation were tested. The proteolytic activity and th...
journal_title:Journal of basic microbiology
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doi:10.1002/jobm.202000164
更新日期:2020-12-29 00:00:00
abstract::In the course of a screening for extracellular inhibitors of 8 different proteinases 140 actinomycete and 150 mould strains were examined. 130 fungal and 50 actinomycete strains were similarly tested for the production of extracellular inhibitors of dihydrofolate reductase (DHFR) and alkaline phosphatase (APh). Most o...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.3620290719
更新日期:1989-01-01 00:00:00
abstract::A nourseothricin-producing Streptomyces noursei strain was continuously cultivated in a chemostat equipped with a stirrer for mechanical fractionation of the mycelium. Different cultivation conditions allowed the selection of six types of differentiation mutants after the culture had reached a population genetically s...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
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abstract::Bacteria capable of methylating Hg2+ have been isolated from sediment, water, soil and the gastrointestinal tract of humans. However, very little is known about the physiology and genetics of the mechanisms controlling Hg2+ methylation. Mercury methylation can be either chromosomal or plasmid-encoded in bacteria. In a...
journal_title:Journal of basic microbiology
pub_type: 杂志文章,评审
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abstract::Surface cultures of Fusarium culmorum JP15 were found to respond to extracts of other fungi by enhanced production of orange-red fusarubin pigments and formation of aerial mycelium. Two inducers from strain Ulocladium sp. HKI 0226, the new (-)-terpestacin (1) and L-tenuazonic acid (2), were isolated. 1 inhibited syncy...
journal_title:Journal of basic microbiology
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doi:10.1002/1521-4028(200107)41:3/4<179::aid-jobm179>3
更新日期:2001-01-01 00:00:00
abstract::A study was performed to develop a fermented milk beverage with the aim to increase the potential application of buffalo cheese whey and soymilk. A mixed substrate was prepared by selective combination, which contained buffalo cheese whey 35%, soymilk 30% and cow milk 35%. The substrate mixture was fermented by a mixe...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/(sici)1521-4028(199909)39:4<243::aid-jobm2
更新日期:1999-01-01 00:00:00
abstract::A study was conducted to examine the prevalence of brucellosis (in animal farms) in the vicinity of Islamabad and Rawalpindi. A total of 170 milk samples were collected randomly from several farmhouses. The collected milk samples were initially screened by a Brucella selective medium. The bacterial isolates grown on t...
journal_title:Journal of basic microbiology
pub_type: 杂志文章
doi:10.1002/jobm.201900454
更新日期:2020-03-01 00:00:00
abstract::Insecticidal proteins expressed by genetically modified Bt maize may alter the enzymatic and microbial communities associated with rhizosphere soil. This study investigated the structure and enzymatic activity of rhizosphere soil microbial communities associated with field grown Bt and non-Bt maize. Rhizosphere soil s...
journal_title:Journal of basic microbiology
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doi:10.1002/jobm.201700043
更新日期:2017-09-01 00:00:00
abstract::The high-level expression of the xylanase GH11 gene from Aspergillus niger IA-001 called xynB was successfully completed in Pichia pastoris. The xynB gene encoding a mature xylanase of 225 amino acid was subcloned into the pPICZαA vector and was transformed into P. pastoris X-33 under the control of the alcohol oxidas...
journal_title:Journal of basic microbiology
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abstract::The metabolization of L-carnitine was studied using whole cells of Escherichia coli 044 K74. It showed features of an epigenetical control. L-carnitine and crotonobetaine were able to induce the carnitine-reducing system. Oxygen and nitrate as electron acceptors, gamma-butyrobetaine as final product of carnitine trans...
journal_title:Journal of basic microbiology
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abstract::A simple photometric method for the determination of the agglutination rate of cells by lectins in a continuously stirred suspension is presented. Besides the agglutination rate the method allows the estimation of an average degree of agglutination, i.e. the number of cells per aggregate. The influence of the Con A-co...
journal_title:Journal of basic microbiology
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abstract::Protein turnover affects protein abundance and phenotypes. Comprehensive investigation of protein turnover dynamics has the potential to provide substantial information about gene expression. Here we report a large-scale protein turnover study in Salmonella Typhimurium during infection by quantitative proteomics. Muri...
journal_title:Journal of basic microbiology
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abstract::There was a considerable change in the structural parameters of both the lignocellulosic substrates. This change was confirmed by infrared (IR) spectroscopy and X-ray diffraction data, which revealed the presence of phenolic groups in the peaks range 1310-1410 and 1200 cm-1 with large crystalline substrates. These wer...
journal_title:Journal of basic microbiology
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更新日期:1993-01-01 00:00:00
abstract::Mixed bacterial cultures are increasingly being used in the production of polyhydroxyalkanoates (PHAs), as they have the potential to be more cost effective than axenic pure cultures. The purpose of this study was to use pure cultures in combination to identify their potential of PHA production. In this work we used v...
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