Abstract:
:The aim of this work was to study the catabolic pathway of the pollutant 2,4,6-trichlorophenol in Ralstonia eutropha JMP134. 2,6-dichlorohydroquinone was detected as transient intermediate. Enzymatic transformations of 6-chlorohydroxyquinol to 2-chloromaleylacetate, and of this compound to maleylacetate were detected in crude extracts. Therefore, the degradation of 2,4,6-trichlorophenol proceeded through an hydroxyquinol pathway, different from the other chloroaromatic pathways reported in this strain. The same results were observed in two other 2,4,6-trichlorophenol degrading strains: R. eutropha JMP222, a derivative of strain JMP134 lacking the chlorocatechol catabolism-encoding pJP4 plasmid, and a river isolate, Ralstonia sp. PZK.
journal_name
J Basic Microbioljournal_title
Journal of basic microbiologyauthors
Padilla L,Matus V,Zenteno P,González Bdoi
10.1002/1521-4028(200008)40:4<243::AID-JOBM243>3.0subject
Has Abstractpub_date
2000-01-01 00:00:00pages
243-9issue
4eissn
0233-111Xissn
1521-4028journal_volume
40pub_type
杂志文章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::Rock phosphate effect on English mint (Mentha piperita L.) grown on steamed perlite:vermiculite (1:1, v:v) substrate, with and without rock phosphate, was evaluated in greenhouse experiments. Five treatments were carried out by inoculation with an arbuscular mycorrhizal fungus Glomus mosseae and a phosphorus solubiliz...
journal_title:Journal of basic microbiology
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abstract::The bacterial strain mA3 capable of utilizing 3-aminophenol as the sole source of carbon, energy and nitrogen for growth was isolated from an enrichment culture and identified as an Arthrobacter species. Utilization of 0.68 mg/ml 3-aminophenol by batch cultures of this organism was characterized by a specific growth r...
journal_title:Journal of basic microbiology
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abstract::Intracellular proteolytic activity was detected in the haloalkaliphilic archaeon Natronococcus occultus during the stationary phase of cultures grown in complete medium and during carbon and nitrogen starvation. Puromycin prevented the occurrence of proteolytic activity in starved cells, suggesting that de novo synthe...
journal_title:Journal of basic microbiology
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abstract::Trichoderma atroviride (T-15603.1) is a promising fungal agent for biological control of wood decay fungi in urban tree wounds. The aim of this work was to determine the combined effects of water activity (a(w), 0.998-0.892), temperature (10-30 °C) and pH (3-7) on the development of conidia on low-nutrient agar (LNA)....
journal_title:Journal of basic microbiology
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abstract::The present investigation deals with the promotry effect of different additives and metallic micro minerals on citric acid production by Aspergillus niger MNNG-115 using different carbohydrate materials. For this, sugar cane bagasse was fortified with sucrose salt medium. Ethanol and coconut oil at 3.0% (v/w) level in...
journal_title:Journal of basic microbiology
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abstract::Lyme disease, caused by Borrelia burgdorferi, is a focally endemic tick-transmitted zoonotic infection. In this study, the major factors underlying synonymous codon-related amino acid usage in the B. burgdorferi genome and bias in synonymous codon usage of the translation initiation region of coding sequences were ana...
journal_title:Journal of basic microbiology
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abstract::A comparative electron microscopic analysis of weakly beta-haemolytic spirochaetes related to human and animal intestinal spirochaetosis was done in order to search for the presence of inducible bacteriophages associated with these spirochaetes. Bacteriophages were detected at the electron microscope after experimenta...
journal_title:Journal of basic microbiology
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更新日期:1998-01-01 00:00:00
abstract::Many strains of Amycolatopsis, such as Amycolatopsis orientalis, A. balhimycina, and A. mediterranei, are important antibiotic producers. Three indigenous plasmids, pMEA100, pMEA300, and pA387, found in this genus have been sequenced. However, only some vectors based on pA387 have been widely applied in Amycolatopsis ...
journal_title:Journal of basic microbiology
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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
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journal_title:Journal of basic microbiology
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abstract::Sphingobium sp. SYK-6 can utilize lignin biphenyl compounds, such as 2,2'-dihydroxy-3,3'-dimethoxy-5,5'-dicarboxybiphenyl (DDVA). In the metabolism of DDVA, this microorganism exploits two O -demethylation systems with different substrate specificities, namely, a DDVA-specific oxygenative O -demethylation system and a...
journal_title:Journal of basic microbiology
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journal_title:Journal of basic microbiology
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更新日期:2003-01-01 00:00:00
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journal_title:Journal of basic microbiology
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journal_title:Journal of basic microbiology
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journal_title:Journal of basic microbiology
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更新日期:1996-01-01 00:00:00
abstract::Open reading frame17 (Bm17) of Bombyx mori nucleopolyhedrovirus is a highly conserved gene in lepidopteran nucleopolyhedroviruses, suggesting that it performs an important role in the virus life cycle whose function is unknown. In this report, we describe the characterization of Bm17. Reversed transcriptive-PCR (RT-PC...
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abstract::Crude glucoamylase preparation from Rhizoctonia solani was used to saccharify raw and cooked starch. Various concentrations of potato starch and wheat flour from 10-40%, w/v were used for mashing but 30% was found to be the optimal and economical. The saccharified mash yielded 5.89%, v/v ethanol in a simultaneous sacc...
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abstract::The fungal population of Aswan High Dam Lake showed marked vertical variations during the period of study which extended from July 1985 to December 1986. High fungal counts were observed at the surface water which were mainly due to the high counts of Aspergillus fumigatus and A. terreus. Going deeper the fungal popul...
journal_title:Journal of basic microbiology
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更新日期:1990-01-01 00:00:00
abstract::In most filamentous basidiomycetes, clamp cells are found at the septa of dikaryotic mycelia. Clamp cell formation starts at hyphal tip cells with the development of a lateral bulge at a position slightly apical to the future septum. Relative to the growth direction of the hypha, the protrusion expands backwards into ...
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abstract::Yeasts form a significant and diverse part of the phyllosphere microbiota. Some yeasts that inhabit plants have been found to exhibit extracellular enzymatic activities. The aim of the present study was to investigate the ability of yeasts isolated from leaves, fruits, and blossoms of fruit trees cultivated in Southwe...
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abstract::The impact of increasing Cd2+ exposure on the quality and quantity of siderophores produced by a plant growth promoting Pseudomonas fulva strain was tested to gain insight into the degree of change. P. fulva was cultured in the increasing concentrations of Cd2+ (0, 0.5, 1.0, 2.0 mM). The secreted siderophores were sep...
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abstract::The Schizosaccharomyces pombe msrB(+) gene encoding methionine-R-sulfoxide reductase (MsrB) was cloned into the shuttle vector pRS316 to generate the recombinant plasmid pFMetSO. The msrB(+) mRNA level was significantly increased in the S. pombe cells harboring pFMetSO, indicating that the cloned msrB(+) gene is funct...
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abstract::Endophytes represent a hidden world within plants. Almost all plants that are studied harbor one or more endophytes, which help their host to survive against pathogens and changing adverse environmental conditions. Fungal and bacterial endophytes with distinct ecological niches show important biological activities and...
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