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Bacteria - DOAJ

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Last Updated: 27 September 2022

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Characterization of hydrocarbon utilizing bacteria in waste engine oil-impacted sites

Three auto-mechanical workshops in Uyo, N. . . . ia, evaluated changes in soil physicochemical characteristics and bacterial species present in soil polluted with waste engine oil. With rises in soil physicochemical properties of soil and heterotrophic bacterial population counts, wastewater pollution caused soil contamination that affected soils significantly. During the 15 days of incubation, the degree of bacterial growth observed was related to organisms' ability to biodegrade hydrocarbons present in the medium bacterium species, which showed varying hydrocarbon utilization during the 15 days of incubation. Corynebacterium kutscheri grew in hydrocarbon medium, which was the most effective in cultures.

Source link: https://doi.org/10.36462/H.BioSci.20218


Identification of pathogen bacteria from camel (Camelus dromedarius) mastitis and investigation of antibiotic susceptibility

The aim of this research was to determine pathogenic bacteria in milk from female camels with mastitis and then select antibiotics for use with antibiotic susceptibility testing. After the application of the CMT test and determination of SCC values, the camels were diagnosed with subcutaneous mastitis. 4 Staphylococcus aureus, 4 S. auricularis, 2 S. tenkoperi, 2 S. cohnii spp. 2 6. 2 percent Gemella morbilorum, 2 6. 2 percent Corynebacterium pseudotuberculosis, 2 S. quorum, 2 Streptococcus agalactiae, 2 S. nephalitis, 2 S. dysgalactiae, 2 S. agalactiae, 2 S. agalactiae, 2 Pseudomonae, 2 6. 25% Coryne identified In S. aurus and S. cohnii spp. , Vancomycin resistance was determined.

Source link: https://doi.org/10.36462/H.BioSci.202109


Metaomics unveils the contribution of Alteromonas bacteria to carbon cycling in marine oxygen minimum zones

Gammaproteobacteria of the genus Alteromonas are important players of pelagic marine microbial communities, playing a key role in the aerobic degradation of particulate organic matter. Alteromonas prominently contribute to marine microbial communities from suboxic waters in both the free-living and particle-attached fractions, but a considerable decrease in abundance in anoxic waters was shown in this report. The highest percentage of Alteromonas transcripts was found within the second fluorescence maximum of Oxygen Minimum Zones, and the most significant percentage of Alteromonas transcripts was within the secondary fluorescence maximum of Oxygen Minimum Zones. .

Source link: https://doi.org/10.3389/fmars.2022.993667


Isolation of Crude Oil from Polluted Waters Using Biosurfactants Pseudomonas Bacteria: Assessment of Bacteria Concentration Effects

Both biological decomposition techniques and isolation of environmental pollutants using biosurfactants bacteria are effective methods of environmental defense. Using pseudomonas sea bacteria species, this research explores the effects of biosurfactants on crude oil recovery and isolation. In two pH ranges and four saline solutions of various concentrations, experiments were carried out to find the highest concentration of biosurfactants for isolating oil from water and killing oil-in-water or water-in-oil emulsions.

Source link: https://doi.org/10.48084/etasr.265


Occurrence and potential mechanism of holin-mediated non-lytic protein translocation in bacteria

Holins are commonly thought to produce large membrane lesions that allow endolysin passage across prokaryotes' cytoplasmic membrane, resulting in cell wall decay and cell lysis. However, there are increasing examples of non-lytic holin-dependent secretion of proteins by bacteria, implying that holins somehow transport proteins without causing large membrane lesions. The mechanism for non-lytic holin-mediated transport is unclear, but the recent report that the tiny holin TPEE mediates a non-lytic toxin secretion in Clostridium perfringens opened new perspectives. Here we review the documented cases of non-lytic holin-mediated transportation and then focus on TatA and TpeE's structural and functional comparison, resulting in a mechanistic model for holin-mediated transport.

Source link: https://doi.org/10.15698/mic2022.10.785


Isolation and characterization of phosphate solubilizing bacteria naturally colonizing legumes rhizosphere in Morocco

The present research seeks to identify PSB strains isolated from soils in various regions of Morocco's varying bioclimatic zones and then present in a variety of legumes rhizospheres to enhance agronomic microbial fertilizer's effectiveness. In addition, the strain WJEF15 demonstrated the highest P solubility efficiency in NBRIP-TCP liquid medium by releasing 25. 16 mg. l. u20131 of soluble P. The experiment design revealed that a combination of RP and TCP with max level increases P solubilization by 20. 8 percent, while the WJEF63 strain had the most effective concentration of 102. 69 mg. lu20131.

Source link: https://doi.org/10.3389/fmicb.2022.958300


Inoculating plant growth-promoting bacteria and arbuscular mycorrhiza fungi modulates rhizosphere acid phosphatase and nodulation activities and enhance the productivity of soybean (Glycine max)

Soybean [Glycine max Merrill] cultivation is important for its dual role as a primary source of dietary protein and soil fertility enhancer, but production is constrained by soil nutrient deficiencies. This field study was conducted at Nkolbisson-Yaoundu00e9 in Cameroon's agro-ecological zone V to evaluate soybean's growth-promoting bacteria and arbuscular mycorrhiza fungi, with or without NPK fertilizer addition, and without NPK fertilizer additions. Compared to control, the number of root nodules increased by 68. 4%, while the addition of NPK fertilizers has significantly increased the number of root nodules by 66. 9%. Compared to the control, the inoculation of PGPB or AMF in Sole and its integration with NPK fertilizer raised soybean yield and grain contents. Soil phosphorus was found to be highly related to soybean grain protein and carbohydrate contents. Acid phosphatase correlated closely with soybean grain yield and carbohydrate content, according to Acid phosphatase.

Source link: https://doi.org/10.3389/fpls.2022.934339


Functional interplay between antagonistic bacteria and Rhizoctonia solani in the tomato plant rhizosphere

An imperial role in tomato plant growth and defense against the Rhizoctonia solani is played by Microbial interactions with plant roots. This research carried out a field experiment with two antagonistic bacteria in tomato rhizosphere soil in order to determine the metabolic profile and microbial function during plant disease suppression. These carbon sources can help to propagate a healthy microbial community to minimize pathogen invasion in the plant root system, and these carbon sources can act as triggers of pathogen antagonists against pathogens in the future.

Source link: https://doi.org/10.3389/fmicb.2022.990850


Antimicrobial activity of natural products against MDR bacteria: A scientometric visualization analysis

The antimicrobial activity of natural products against multidrug-resistant bacteria has been shown in a growing number of studies. paraphrasedoutput:Methods: This research sought to analyze the current status and future trends in this field by using scientometric methods to analyze the most recent findings and future trends. This work was retrieved from the Web of Science Core Collection database. The United States and India made the most contributions in this field. The University of Dschang from Cameroon published the most journals. Coutinho HDM, Kuete V, and Gibbons S were the key researchers in numerous journals, as they published a significant number of papers and were co-cited in numerous publications. The most influential journals with the most number of publications and co-citations, respectively, were Frontiers in Microbiology and Antimicrobial Agents and Chemotherapy. Several key topics could be roughly divided into four main themes, among which the u201cnatural product improvement approachu201d had attracted a lot of attention in recent years.

Source link: https://doi.org/10.3389/fphar.2022.1000974


Genome analysis of secondary metabolite‑biosynthetic gene clusters of Photorhabdus akhurstii subsp. akhurstii and its antibacterial activity against antibiotic-resistant bacteria

Xenorhabdus and Photorhabdus can produce a variety of secondary metabolites with broad spectrum bioactivity against microorganisms. Xenorhabdus and Photorhabdus were found in Xenorhabdus and Photorhabdus against 15 antibiotic-resistant bacteria strains. By disk diffusion, photorhabdus extracts stifled Methicillin-resistant Staphylococcus aureus' growth. P. akhurstiyi is a sp. subpoena. Minimum inhibitory concentrations and minimal bactericidal concentrations were shown in an akhurstii extract, as shown by lower minimum inhibitory concentrations and minimal bactericidal concentrations. The P. akhurstii subsp. The P. akhurstii subsp. The P. khurstii subsp. mingle The op. Indication between either P. akhurstii subsp. P. akhurstii or P. akhurstii subpoena subsp. With a fractional inhibitory concentration index of 0. 53, a partial synergistic reaction of akhurstii or P. hainanensis extract in combination with oxacillin determined by checkerboard assay revealed partially synergistic interaction. P. akhurstii subsp. 's time-killing assay for P. akhurstii subpoena was time-killing assay for P. akhurstii subsp. Cell viability was reduced from 105 CFU/ml to 103 CFU/ml in 30 minutes by the S. aurus strain PB36. The bNN168. 5_TH extract caused the severe S. aureus strain PB36 cell membrane damage, according to the transmission electron microscopic study.

Source link: https://doaj.org/article/8a811a29a46c40dbbbc31943b8fd278a

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions