scholarly journals Diversity of Biofilm-Forming Bacteria in Chinnamuttom Harbor of Southeast India

2021 ◽  
Vol 14 (4) ◽  
pp. 1793-1799
Author(s):  
P. Nithya
Keyword(s):  
Surface Water ◽  
Bacterial Species ◽  
Ship Hull ◽  
Rrna Gene ◽  
Pseudomonas Sp ◽  
Bacillus Sp ◽  
Bacterial Isolates ◽  
Four Seasons ◽  
The Mean ◽  
Marine Environmental

Biofilms are species rich, partially due to highly effective powers of diffusion of the microorganisms and have wide tolerance to marine environmental conditions. Characteristically, the first organisms to respond to and convalesce from stress. The present study aims to isolate and identify the biofilm forming bacterial species, collected from surface water and substratum of the ship hull for four seasons at Chinnamuttom fishing harbor, Southeast coast of India, during June 2015 to May 2016. Among the mean concentration of bacterial isolates of both water and substratum of the station, maximum in monsoon and minimum in summer seasons. Totally 16 isolates were obtained, based on the adherence property, 8 isolates from surface water and 8 isolates from substratum of the ship hull. The samples were plated on Zobell marine agar medium for bacterial isolates of study area. The isolates of Bacillus sp., Flavobacterium sp., Pseudomonas sp., Aeromonas sp., Micrococcus sp., Vibrio sp., Salmonella sp., Staphylococcus sp., Shegella sp., Klebsiella sp., Corynebacterium sp., Enterobacter sp., Chromohalobacter sp., Bacillus sp., Escherichia coli and Bacilus sp. were reported in all the seasons at study area. The major diverse bacterial isolates were further characterized through morphological and molecular identification. Based on 16S rRNA gene sequences. Biofilm bacterial isolates were confirmed as Bacillus sp., and Pseudomonas sp.

scholarly journals Antimicrobial activity evaluation of frankincense oil in domestic water samples by 16s rRNA gene

2017 ◽  
Vol 2 (4) ◽  
Author(s):  
Saeed F R ◽  
Al Kendi R ◽  
Vijith Chandu
Keyword(s):  
Antimicrobial Activity ◽  
Bacterial Species ◽  
Water System ◽  
Morphological Characteristics ◽  
Rrna Gene ◽  
Water Tank ◽  
Pseudomonas Sp ◽  
Bacterial Isolates ◽  
Domestic Water ◽  
Minimum Effective Concentration

          The domestic water system permits the growth and reproduction of bacterial species. The removal of such contaminants by the application of chemical disinfectants like chlorine may pose health risk. Therefore, the natural products are more favored to be investigated for its antimicrobial activity. The current study investigates the efficiency of frankincense oil as an antimicrobial agent on bacterial species isolated from the domestic water system. In the previous study, 15 bacterial species were isolated based on the colony morphological characteristics and prepared for identification. 16S rDNA gene was amplified using PCR for all bacterial isolates followed by sequencing and identification using BLAST.  Thirteen bacterial isolates were identified and represented in Staphylococcus saprophhyticus, Bacillus pumilus, Bacillus safensis and Pseudomonas sp. and the last one showed more resistant to frankincense oil as the numbers increased with the treatment by 26% and 35%. Other species were either completely or partially eliminated. The results confirmed that the antimicrobial activity of frankincense oil against some bacterial species, mainly exist in storage tank. Pseudomonas sp. showed resistance to frankincense oil (10%) used in this study. In addition, Staphylococcus saprophhyticus is of a concern to human health, however, it showed sensitivity to frankincense oil and also, its presence in the water tank indicates hygiene issues of the household. The frankincense oil found to be a promising disinfectant, thus further analysis needed to specify the minimum effective concentration to be applied, also to find out whether it is cost effective to be used as a disinfectant.

DIVERSITY OF CULTURABLE BACTERIAL MICROBIOTA OF THE Eisenia foetida DIGESTIVE TRACT

2018 ◽  
Vol 41 (3) ◽  
pp. 255-264 ◽  
Author(s):  
J. Abraham Pérez-Pérez ◽  
David Espinosa-Victoria ◽  
Hilda V. Silva-Rojas ◽  
Lucía López-Reyes
Keyword(s):  
Bacterial Diversity ◽  
Digestive Tract ◽  
Bacterial Species ◽  
Brain Heart Infusion ◽  
Rrna Gene ◽  
Eisenia Foetida ◽  
Bacterial Isolates ◽  
Bacterial Microbiota ◽  
Decomposition Of Organic Matter ◽  
Earthworm Gut

Bacteria are an unavoidable component of the natural earthworm diet; thus, bacterial diversity in the earthworm gut is directly linked to decomposition of organic matter and development of the surrounding plants. The aim of this research was to isolate and to identify biochemically and molecularly the culturable bacterial microbiota of the digestive tract of Eisenia foetida. Earthworms were sourced from Instituto de Reconversión Productiva y Bioenergética (IRBIO) and Colegio de Postgraduados (COLPOS), México. Bacterial isolation was carried out on plates of Brain Heart Infusion (BHI) culture medium. Fifty six and 44 bacterial isolates were obtained from IRBIO and COLPOS, respectively. The population was composed of 44 Gram-negative and 56 Gram-positive isolates. Over 50 % of the bacterial isolates were rod-shaped cells. The 16S rRNA gene was sequenced and nine genera were identified in worms from IRBIO (Bacillus, Paenibacillus, Solibacillus, Staphylococcus, Arthrobacter, Pantoea, Stenotrophomonas, Acinetobacter and Aeromonas) and six in worms from COLPOS (Bacillus, Paenibacillus, Stenotrophomonas, Staphylococcus, Acinetobacter and Aeromonas). Bacillus was the predominant genus, with eight and six species in the oligochaetes from IRBIO and COLPOS, respectively. The most represented bacteria in the worms from both sites were Bacillus sp. and B. subtilis. The predominance of Bacillus was probably due to spore formation, a reproductive strategy that ensures survival and dispersion in the soil and oligochaetes digestive tract. The gut of E. foetida not only harbored bacterial species of agronomic importance but also species potentially pathogenic for humans (Staphylococcus warneri, Pantoea agglomerans and Stentrophomonas sp.). The larger bacterial diversity in worms from IRBIO could be due to their feeding on cattle manure, which is a rich source of bacteria.

scholarly journals Isolation, Characterization, and Identification of Bacterial Population from Textile and Tannery Effluents of Bangladesh

2016 ◽  
Vol 29 (2) ◽  
pp. 84-88
Author(s):  
A Hakim ◽  
S Hoque ◽  
SM Ullah
Keyword(s):  
Bacterial Population ◽  
Bacterial Species ◽  
Bacterial Count ◽  
Rrna Gene ◽  
Bacterial Isolates ◽  
Tannery Effluents ◽  
Bacterial Composition ◽  
Degrading Bacteria ◽  
Diagnostic Characteristics ◽  
Metal Treatment

Ten effluent samples from two different sites located at Hazaribagh tannery belt and Dhaka EPZ, Savar were collected. This study aimed to compare the bacterial composition isolated from tannery and textile effluents and to investigate the occurrence of metal toxicity tolerant and dye degrading bacteria and to select the potential strains for the use in bioremediation. The average bacterial count of HT and DETDE varied in between 3.35×106 and 5.45×106 cfu/mL and 4.8×106 and 7.75×106cfu/mL, respectively. A total of 12 bacterial isolates were characterized as strains of Bacillus, Staphylococcus, and Pseudomonas. A few, however, were re-cultured on other recommended media for verification of diagnostic characteristics. Maximum numbers of bacterial species were isolated from textile effluent. The results showed that a Gram-positive bacillus with a yellow pigment was considered as a major group of the population. Among them three isolates were identified based on alignments of partial sequence of 16S rRNA gene. These are also being used in different wastewater and metal treatment plants all over the world.Bangladesh J Microbiol, Volume 29, Number 2, Dec 2012, pp 84-88

Isolation of pathogenic bacteria from Oberea linearis (Coleptera: Cerambycidae)

Biologia ◽  
2007 ◽  
Vol 62 (1) ◽  
Author(s):  
Ali Bahar ◽  
Zihni Demirbağ
Keyword(s):  
Serratia Marcescens ◽  
Pseudomonas Syringae ◽  
Pathogenic Bacteria ◽  
Bacterial Flora ◽  
Biochemical Properties ◽  
Metabolic Enzyme ◽  
Rrna Gene ◽  
Pseudomonas Sp ◽  
Bacterial Isolates ◽  
Enterobacter Agglomerans

AbstractThe bacterial flora of the Oberea linearis (Coleoptera: Cerambycidae) was investigated and 13 different bacteria were isolated from O. linearis larvae. Seven of these bacteria were performed and characterized at species level and the rest of them were characterized at genus level. In this study, we determined morphological and physiological characteristics of the bacterial isolates by conventional and routine techniques, biochemical properties and metabolic enzyme profiles by API20E and Phoenix 1000A panel test systems. Additionally, 16S rRNA gene sequence analysis was also performed to identify the isolates at the molecular level. The isolates were identified as Acinetobacter calcoaceticus (Ol1), Enterobacter aerogenes (Ol2), Pseudomonas sp. (Ol3), Flavobacterium sp. (Ol4), Microbacterium sp. (Ol5), Enterobacter agglomerans (Ol6), Xanthomonas sp. (Ol7), Pseudomonas syringae (Ol8), Pseudomonas sp. (Ol9), Xanthomonas sp. (Ol10), Enterobacter cancerogenus (Ol11), Xanthomonas maltophilia (Ol12), and Serratia marcescens (Ol13). This is the first record of bacterial isolates (Ol5, Ol8, Ol11, Ol12) from any insect. All these bacteria were tested against O. linearis larvae, and Serratia marcescens was found to cause the highest mortality (65%). On the other hand, we determined 90% mortality against this pest within four days by utilizing spore and crystal mixture of Bacillus thuringiensis isolated from Melolontha melolontha.

scholarly journals Assessment of microbiological and residual antibiotics status in milk sold in Abeokuta, Ogun State. Nigeria

2018 ◽  
Vol 6 (6) ◽  
pp. 642
Author(s):  
Flora Oluwafemi ◽  
Bosede Folashade Oluwabamiwo ◽  
Oluseyi Oluwajubelo Oluwatosin ◽  
Olufunmilayo Ruth Akinrinade ◽  
Adelodun Lawrence Kolapo
Keyword(s):  
Bacterial Species ◽  
Method Comparison ◽  
Antibiotic Sensitivity ◽  
Plate Count ◽  
Diffusion Method ◽  
Rrna Gene ◽  
Antibiotic Residues ◽  
Bacterial Isolates ◽  
Powdered Milk ◽  
Microbiological Methods

This study investigated the prevalence and concentration of antibiotic residues in twenty brands of milk. Determination and quantification of antibiotic residues was done using High Performance Liquid Chromatography. Aerobic plate count was carried out and the associated bacteria isolated. Identification of bacteria was done using standard microbiological methods. Molecular characterization and identification of bacterial isolates was done using 16S rRNA gene sequencing method. Antibiotic sensitivity was carried out on bacterial isolates using disc diffusion method. Plasmid profile of drug resistant isolates was done using alkaline analysis method. Comparison of means was done using Analysis of Variance. Antibiotic residues were detected in 10 (50%) of the 20 milk brands analyzed. The residual levels of tetracycline, oxytetracycline and chlortetracycline ranged between 5ng/kg and 1569ng/kg while none of the samples had doxycycline residues. The prevalence of tetracycline residues in evaporated milk brands and powdered milk samples were 100 and 23 % respectively. The aerobic plate counts ranged from 2.5 × 102 to 6.5 × 102 CFU∕mL for evaporated milk and 2.5 × 101 to 6.0 × 101 CFU∕mL for powdered milk. A total of ten bacterial species were isolated and identified. Susceptibility result showed that 95% of the isolates were sensitive to erythromycin, cefuroxime and gentamycin; 12.5% were resistant to tetracycline and ampicillin, 10% were resistant to ofloxacin and 7.5% to doxycycline and penicillin. Five of the bacterial isolates were resistant to more than one class of antibiotics. Resistant isolates subjected to plasmid profiling had detectable plasmids with estimated sizes between 120bp and 1000bp. The obtained results provide evidence that the presence of antibiotic residues in evaporated and powdered milk is an indication that the public is exposed to the harmful effects of the residues.

scholarly journals The Effects of Enrichment Nutrients on the Growth of Indigenous Bacteria Species in Spent Lubricating Oil Contaminated Water

2020 ◽  
pp. 39-48
Author(s):  
Tudararo-Aherobo Laurelta
Keyword(s):  
Bacterial Species ◽  
Organic Wastes ◽  
Lubricating Oil ◽  
Contaminated Water ◽  
Cow Dung ◽  
Pseudomonas Sp ◽  
Bacterial Isolates ◽  
Mineral Salts ◽  
Bacterial Counts ◽  
Significant Difference

Aim: This study was conducted to compare the effects of enrichment nutrients, NPK (Nitrogen, Posphorus, Potassium) and organic wastes on the growth of indigenous bacterial species in spent lubricating oil contaminated water. Six bacterial species which were isolated from spent lubricating oil impacted soils (Pseudomonas sp., Bacillus sp., Actinomyces sp., Acinetobacter sp., Enterobacter sp., and Micrococcus sp.,) and showed profuse utilization of spent lubricating oil on screening, were used for this study. Place and Duration of Study: The study was conducted in the laboratory of the Department of Environmental Management and Toxicology, Federal University of Petroleum Resources, Effurun, between 2018 and 2019. Methodology: The study and was conducted using Mineral Salts Medium broth, spent lubricating oil substrate and NPK (20:10:10), Chicken droppings and Cow dung as nutrient sources (biostimulants). The effect of the biostimulants on the growth of the bacterial isolates was assessed weekly for 14 days by measuring the turbidity, bacterial counts and pH. Results: Pseudomonas sp. recorded the highest count of 1.16E+19 CFU/ml, 2.53E+17 CFU/ml and 1.74E+14 CFU/ml for biostimulation with NPK, Chicken droppings and Cow dungs respectively. The treatment with NPK enhanced the bacterial isolates most, of the three treatments used at the end of the test period. The pH values obtained for the test cultures at the end of the study, ranged from 6.52±0.02 for Enterobacter sp. in Cow dung treated cultures to7.85±0.03 for Pseudomonas sp.in NPK treated cultures. The values were within the optimum biodegradation range of 6.50 -8.50. There was significant difference between the bacterial counts obtained with the cultures treated with NPK and Chicken droppings (P=0.006), between NPK and cow dungs (P = 0.031) and between NPK and the control (P = 0.033). The study affirms the benefits of using organic wastes in the bioremediation process of hydrocarbon contaminated sites; it enhances the nutrients required by the bacteria for the remediation process and it’s a waste management strategy for disposing these organic wastes at very minimal costs and in an ecofriendly manner.

scholarly journals DNA Barcoding of Swamp Sediment Bacterial Isolates for Swamp Aquaculture Probiotic

2018 ◽  
Vol 68 ◽  
pp. 01023
Author(s):  
Marini Wijayanti ◽  
Dade Jubaedah ◽  
Januar Ahlan Suhada ◽  
Siti Yuliani ◽  
Nabilah Saraswati ◽  
...  
Keyword(s):  
Bacterial Species ◽  
Gene Bank ◽  
Bacillus Sp ◽  
Dna Barcodes ◽  
Bacterial Isolates ◽  
Streptomyces Sp ◽  
Blast Analysis ◽  
16S R Rna ◽  
Aquaculture Ponds ◽  
Rna Genes

Bacteria derived from swamp sediments and aquaculture ponds potential to be probiotics. The study aims to determine the sequence of 16S r RNA gene of isolate of probiotics candidate bacteria from sediment of swamp, to determine the phylogenetic tree between the bacterial species from isolates and Gene Bank data central for their potential as probiotic. The samples of bacteria resulted from pure isolation selected from the sediment of pond cultivation and swamp waters at Lebung Karangan Reservation, Ogan Ilir Regency, Indralaya, South Sumatra. This study was started from cultivating bacteria, extracting DNA of bacteria, amplification 16S r RNA genes by PCR, running electrophoresis, and sequencing the amplicon for determining DNA barcodes of bacteria from sediment of swamp and rearing pond. The result of BLAST analysis showed that KA isolate had the highest similarity 97% with Streptomyces sp. Hjorring101 from Denmark and RA isolate had the highest similarity 98% with Streptomyces sp. BD99 from Pakistan. KE isolate had the highest similarity 99% with Bacillus subtilis CESi5 from Japan and RE isolate had the highest similarity 93% with Bacillus sp.2bFR from Manado. All of isolates were bacteria potentially as swamp aquaculture probiotics.

Vibrio alfacsensis sp. nov., isolated from marine organisms

2012 ◽  
Vol 62 (Pt_12) ◽  
pp. 2955-2961 ◽  
Author(s):  
Bruno Gomez-Gil ◽  
Ana Roque ◽  
Luciane Chimetto ◽  
Ana Paula B. Moreira ◽  
Elke Lang ◽  
...  
Keyword(s):  
Type Species ◽  
Bacterial Species ◽  
Solea Senegalensis ◽  
Rrna Gene ◽  
The Novel ◽  
Content Type ◽  
Vibrio Fluvialis ◽  
Link Type ◽  
The Mean ◽  
Vibrio Furnissii

Five strains (CAIM 1831T, CAIM 1832, CAIM 1833, CAIM 1834 and CAIM 1836) were isolated from cultured sole (Solea senegalensis) in two regions of Spain, two strains (CAIM 404 and CAIM 1294) from wild-caught spotted rose snapper (Lutjanus guttatus) in Mexico, and one strain (CAIM 1835) from corals in Brazil. The 16S rRNA gene sequences of the novel isolates showed similarity to Vibrio ponticus (98.2–98.3 %, GenBank accession no. AJ630103) and to a lesser degree to Vibrio furnissii (97.2–97.3 %, X76336) and to Vibrio fluvialis (96.9–97.1 %, X74703). Multilocus sequence analysis clustered these strains closely together and clearly separated them from phylogenetically related species of the genus Vibrio . Genomic fingerprinting by rep-PCR clustered the novel strains according to their geographical origin. Phenotypic analyses showed a large variation among the new strains, but many tests enabled them to be differentiated from other species of the genus Vibrio . The mean ΔT m values between the strains analysed here and closely related type strains were above 6.79 °C. The values between the novel isolates were below 2.35 °C, well outside the limit suggested for the delineation of a bacterial species. The phenotypic and genotypic data presented here clearly place these new strains as a coherent group within the genus Vibrio , for which we propose the name Vibrio alfacsensis sp. nov. with CAIM 1831T ( = DSM 24595T = S277T) as the type strain.

scholarly journals Isolation and characterization of the cellulose-degrading bacteria from Ngoc Linh ginseng soil in Quang Nam province

2016 ◽  
Vol 14 (1) ◽  
pp. 55-61
Author(s):  
Trần Bảo Trâm ◽  
Phạm Hương Sơn ◽  
Ngô Thị Hiền ◽  
Ngô Thị Hoa ◽  
Nguyễn Thu Hiền ◽  
...  
Keyword(s):  
Thick Layer ◽  
Rrna Gene ◽  
Ideal Condition ◽  
Pseudomonas Sp ◽  
Bacillus Sp ◽  
Isolation And Characterization ◽  
Degrading Bacteria ◽  
Ginseng Soil ◽  
The Ideal

Ngoc Linh ginseng (Panax vietnamensis Ha et Grushv.) is an endemic species in Vietnam and was discovered at the Ngoc Linh mountain (Kon Tum/Quảng Nam). Investigations showed that the soil with a thick layer of humus was the ideal condition for growth and development of Ngoc Linh ginseng. Therefore research on microbial flora as well as cellulose-degrading bacteria in ginseng soil may elucidate factors contributing to acclimatized cultivation of this ginseng in Vietnam. From the soil sample with cultivated Ngoc Linh ginseng in Quang Nam, five bacteria strains with cellulose-degrading activities were isolated (QN1, QN2, QN3, QN4, QN5 with respectively hydrolyzed CMC halos diameters of 10, 11, 22, 7, 22 mm) with cellulase activities of 1,31; 1,23; 2,99; 0,99; 2,51 U/ml. The combination of 16S rRNA gene sequences and cultured/biochemical characteristics of the bacteria showed that the five bacteria strains was classified to be Pseudomonas sp. QN1; Pseudomonas sp. QN4; Bacillus sp. QN2; Bacillus sp. QN3; Roseomonas sp. QN5.

scholarly journals Characterization of rhizospheric bacteria isolated from soil cultivated with sugarcane in Tamaulipas state, Mexico

2021 ◽  
Vol 38 (4) ◽  
pp. 951-969
Author(s):  
Jesús García ◽  
Martín Reyes ◽  
Juan Flores ◽  
Jesús Quiroz ◽  
Israel García ◽  
...  
Keyword(s):  
Plant Growth ◽  
Bacterial Species ◽  
Saccharum Officinarum ◽  
Morphological Characterization ◽  
Luria Bertani ◽  
Rrna Gene ◽  
Sugarcane Variety ◽  
Bacillus Sp ◽  
Phosphorus Solubilization ◽  
Rhizospheric Bacteria

The state of Tamaulipas, Mexico, has two important sugar mills, with plantations of sugarcane (Saccharum officinarum L.) of more than 50 years, the objective of the study was the identification and bacterial characterization in the production of indole-3-acetic acid (IAA), the solubilization of phosphorus and plant growth of bacterial isolates from the rhizosphere of sugarcane. The isolation and morphological characterization were in 30 rhizosphere soil samples of the sugarcane variety CP 72-2086 using the Luria-Bertani media, Congo Red Agar and Potato Dextrose Agar. The molecular characterization was with the 16S rRNA gene and the bacterial inoculation consisted of seedlings of the variety CP 72-2086. 121 strains (38 species) were isolated, being Bacillus sp. most frequently, 14 species were positive for phosphorus solubilization: Bacillus sp. (6), Pseudomonas spp. (5), Paenibacillus (2) Streptomyces venezuelae (1) stand out. The greater phosphorus solubilization was Pseudomonas mediterranea (21.6 mm). Nine bacteria showed production close to 5 ppm IAA: Bacillus aryabhattai (6 ppm), Bacillus pumilus (5.8 ppm) and Ensifer adhaerens (5.6 ppm). Bacillus megaterium showed a higher percentage of chlorophyll and foliar nitrogen. In the present analysis, 38 bacterial species associated with the rhizosphere of the sugarcane variety CP 72-2086 were identified, so these results showed the potential to select native bacteria that have the ability to stimulate plant growth of the variety CP 72-2086.

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