scholarly journals Isolation and Characterization of Mercury Resistant Bacteria from Haldia river sediments

2013 ◽  
Vol 5 (3) ◽  
pp. 23-28 ◽  
Author(s):  
Ankhi Maiti ◽  
Keyword(s):  
River Sediments ◽  
Resistant Bacteria ◽  
Isolation And Characterization ◽  
Mercury Resistant Bacteria

Isolation and characterization of mercury-resistant bacteria from industrial wastewater

2019 ◽  
pp. 128-133
Author(s):  
Syed Zaghum Abbas ◽  
◽  
Choo Jing Yee ◽  
Kaizar Hossain ◽  
Akil Ahmad ◽  
...  
Keyword(s):  
Industrial Wastewater ◽  
Resistant Bacteria ◽  
Isolation And Characterization ◽  
Mercury Resistant Bacteria

scholarly journals Isolation and characterization of arsenic resistant soil bacteria and their effects on germination of rice under arsenic contamination

2015 ◽  
Vol 2 (2) ◽  
pp. 229-237
Author(s):  
Istiaq Ahmed ◽  
Md Tofazzal Islam ◽  
Md Akhter Hossain Chowdhury ◽  
Md Kamruzzaman
Keyword(s):  
Contaminated Soils ◽  
Sodium Arsenite ◽  
Agar Plate ◽  
Rice Seedling ◽  
Resistant Bacteria ◽  
Gram Staining ◽  
Isolation And Characterization ◽  
Resistant Strains

This study was carried out to isolate, screen and characterize arsenic (As) resistant bacteria from As contaminated soils of Dumrakandi and Matlab under Faridpur and Chandpur districts and to evaluate their efficiency in reducing As toxicity against rice seedlings during germination. Thirteen strains were isolated from the soils which showed resistance to different levels of sodium arsenite (viz. 5, 10, 20 and 40 mM) in both agar plate and broth assay using BSMY I media. Among the isolates, BTL0011, BTL0012, BTL0015 and BTL0022 showed highest resistance to 40 mM sodium arsenite. Gram staining and KOH solubility test revealed that five strains were gram positive and rest eight was gram negative. They grew well in the liquid media at pH 5.5 to 8.5. In-vitro rice seedling bioassay with two superior isolates (BTL0011 and BTL0022) revealed that As resistant strains significantly enhanced seed germination of BRRI dhan29 and BRRI dhan47 at 60 ppm As. This study was laid out in CRD with three replications. The performance of BTL 0022 was superior to BTL0011. The overall results suggest that BTL0011 and BTL0022 can be used for bioremediation of As contaminated soils and to increase the germination and seedling growth of rice in As contaminated soils.Res. Agric., Livest. Fish.2(2): 229-237, August 2015

scholarly journals Isolation and Characterization of Pb Resistant Bacteria from Cilalay Lake, Indonesia

2015 ◽  
Vol 4 (3) ◽  
Author(s):  
Kesi Kurnia ◽  
Nina Hermayani Sadi ◽  
Syafitri Jumianto
Keyword(s):  
Heterotrophic Bacteria ◽  
Water Environment ◽  
Resistant Bacteria ◽  
Bacterial Isolates ◽  
Gram Negative ◽  
Isolation And Characterization ◽  
Agar Media ◽  
Physical And Chemical ◽  
Standard Disk

<span>Pollution of water environment with heavy metals is becoming one of the most severe environmental and human health hazards. Lead (Pb) is a major pollutant and highly toxic to human, animals, plants, and microbes. </span><span lang="IN">Toxic metals are difficult to remove from the environment, since they cannot be chemically or biologically degraded and are ultimately indestructible. Biological approaches based on metal-resistant microorganisms have received a great deal of attention as alternative remediation processes. </span><span>This study aim to isolat</span><span lang="IN">e</span><span> and characterize Pb resistant of heterotrophic bacteria in Cilalay Lake, </span><span lang="IN">West Java, </span><span>Indonesia. The water samples were collected </span><span lang="IN">along</span><span> three points around Cilalay Lake. </span><span lang="IN">Water physical and chemical </span><span>determination was performed using the Water Quality Checker</span><span lang="IN">. </span><span>The bacterial isolates were screened on T</span><span lang="IN">r</span><span>ipton</span><span lang="IN">e</span><span> Glucose Yeast (TGY) agar plates. </span><span lang="IN">Afterwards s</span><span>elected isolates were grown on Nutrient Agar media 50% </span><span lang="IN">with </span><span>supplemented Pb 100 ppm by the standard disk. Population of resistant bacteria was counted. The result from metal resistant bacteria indicated that all isolates w</span><span lang="IN">ere</span><span> resistant. The most abundant type of resistant </span><span lang="IN">bacteria </span><span>to lead was Gram negative more than Gram positive. Identified have metal resistant bacteria could be useful for the bioremediation of heavy metal contaminated sewage and waste water</span>

scholarly journals Isolation and Characterization of Two Klebsiella pneumoniae Phages Encoding Divergent Depolymerases

2020 ◽  
Vol 21 (9) ◽  
pp. 3160 ◽  
Author(s):  
Pilar Domingo-Calap ◽  
Beatriz Beamud ◽  
Lucas Mora-Quilis ◽  
Fernando González-Candelas ◽  
Rafael Sanjuán
Keyword(s):  
Klebsiella Pneumoniae ◽  
Multidrug Resistant ◽  
Health Concern ◽  
Resistant Bacteria ◽  
Isolation And Characterization ◽  
The Family ◽  
Important Challenge ◽  
Tail Spike ◽  
Reference Strains

The emergence of multidrug-resistant bacteria is a major global health concern. The search for new therapies has brought bacteriophages into the spotlight, and new phages are being described as possible therapeutic agents. Among the bacteria that are most extensively resistant to current antibiotics is Klebsiella pneumoniae, whose hypervariable extracellular capsule makes treatment particularly difficult. Here, we describe two new K. pneumoniae phages, πVLC5 and πVLC6, isolated from environmental samples. These phages belong to the genus Drulisvirus within the family Podoviridae. Both phages encode a similar tail spike protein with putative depolymerase activity, which is shared among other related phages and probably determines their ability to specifically infect K. pneumoniae capsular types K22 and K37. In addition, we found that phage πVLC6 also infects capsular type K13 and is capable of striping the capsules of K. pneumoniae KL2 and KL3, although the phage was not infectious in these two strains. Genome sequence analysis suggested that the extended tropism of phage πVLC6 is conferred by a second, divergent depolymerase. Phage πVLC5 encodes yet another putative depolymerase, but we found no activity of this phage against capsular types other than K22 and K37, after testing a panel of 77 reference strains. Overall, our results confirm that most phages productively infected one or few Klebsiella capsular types. This constitutes an important challenge for clinical applications.

Isolation and Characterization of Arsenic-Resistant Bacteria from Contaminated Water-Bodies in West Bengal, India

2014 ◽  
Vol 32 (1) ◽  
pp. 17-26 ◽  
Author(s):  
Ramansu Goswami ◽  
Suprabhat Mukherjee ◽  
Vipin Singh Rana ◽  
Dhira Rani Saha ◽  
Rajagopal Raman ◽  
...  
Keyword(s):  
West Bengal ◽  
Water Bodies ◽  
Resistant Bacteria ◽  
Contaminated Water ◽  
Isolation And Characterization ◽  
Arsenic Resistant Bacteria

Isolation and characterization of antibiotic-resistant bacteria from pharmaceutical industrial wastewaters

2015 ◽  
Vol 89 ◽  
pp. 54-61 ◽  
Author(s):  
Leyla Tahrani ◽  
Leila Soufi ◽  
Ines Mehri ◽  
Afef Najjari ◽  
Abdenaceur Hassan ◽  
...  
Keyword(s):  
Resistant Bacteria ◽  
Antibiotic Resistant Bacteria ◽  
Antibiotic Resistant ◽  
Industrial Wastewaters ◽  
Isolation And Characterization

scholarly journals Isolation and characterization of a bacterial strain Hydrogenophaga sp. PYR1 for anaerobic pyrene and benzo[a]pyrene biodegradation

RSC Advances ◽  
2017 ◽  
Vol 7 (74) ◽  
pp. 46690-46698 ◽  
Author(s):  
Zaisheng Yan ◽  
Yu Zhang ◽  
Huifang Wu ◽  
Mingzhong Yang ◽  
Haichen Zhang ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
River Sediments ◽  
Anaerobic Conditions ◽  
Isolation And Characterization ◽  
Polycyclic Aromatic ◽  
Aerobic And Anaerobic ◽  
Aerobic And Anaerobic Conditions

A pyrene-degrading strainHydrogenophagasp. PYR1 was isolated from PAH-contaminated river sediments and found to be able to degrade high molecular weight-polycyclic aromatic hydrocarbons under both aerobic and anaerobic conditions.

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