Naphthalene and phenol degradation by Flavobacterium sp. DQ398100 and Pseudomonas putida, DQ399838 isolated from petroleum polluted soil

2006 ◽  
Vol 25 (S1) ◽  
pp. 83-84 ◽  
Author(s):  
Hassan E. Abd-Elsalam ◽  
Elsayed E. Hafez ◽  
Essam A. Zaki
Keyword(s):  
Pseudomonas Putida ◽  
Phenol Degradation ◽  
Polluted Soil

scholarly journals Different Spectra of Stationary-Phase Mutations in Early-Arising versus Late-Arising Mutants of Pseudomonas putida: Involvement of the DNA Repair Enzyme MutY and the Stationary-Phase Sigma Factor RpoS

2002 ◽  
Vol 184 (24) ◽  
pp. 6957-6965 ◽  
Author(s):  
Signe Saumaa ◽  
Andres Tover ◽  
Lagle Kasak ◽  
Maia Kivisaar
Keyword(s):  
Stationary Phase ◽  
Pseudomonas Putida ◽  
Transcriptional Activation ◽  
Sigma Factor ◽  
Phenol Degradation ◽  
Test System ◽  
Growth Barriers ◽  
Mutational Processes ◽  
Sigma Factor Rpos ◽  
Selection Of

ABSTRACT Stationary-phase mutations occur in populations of stressed, nongrowing, and slowly growing cells and allow mutant bacteria to overcome growth barriers. Mutational processes in starving cells are different from those occurring in growing bacteria. Here, we present evidence that changes in mutational processes also take place during starvation of bacteria. Our test system for selection of mutants based on creation of functional promoters for the transcriptional activation of the phenol degradation genes pheBA in starving Pseudomonas putida enables us to study base substitutions (C-to-A or G-to-T transversions), deletions, and insertions. We observed changes in the spectrum of promoter-creating mutations during prolonged starvation of Pseudomonas putida on phenol minimal plates. One particular C-to-A transversion was the prevailing mutation in starving cells. However, with increasing time of starvation, the importance of this mutation decreased but the percentage of other types of mutations, such as 2- to 3-bp deletions, increased. The rate of transversions was markedly elevated in the P. putida MutY-defective strain. The occurrence of 2- to 3-bp deletions required the stationary-phase sigma factor RpoS, which indicates that some mutagenic pathway is positively controlled by RpoS in P. putida.

The cyo operon of Pseudomonas putida is involved in carbon catabolite repression of phenol degradation

2001 ◽  
Vol 266 (2) ◽  
pp. 199-206 ◽  
Author(s):  
L. Petruschka ◽  
G. Burchhardt ◽  
C. Müller ◽  
C. Weihe ◽  
H. Herrmann
Keyword(s):  
Pseudomonas Putida ◽  
Catabolite Repression ◽  
Carbon Catabolite Repression ◽  
Phenol Degradation

Calorimetric investigations of phenol degradation by Pseudomonas putida

1993 ◽  
Vol 229 ◽  
pp. 181-192 ◽  
Author(s):  
Ch. Motzkus ◽  
G. Welge ◽  
I. Lamprecht
Keyword(s):  
Pseudomonas Putida ◽  
Phenol Degradation ◽  
Calorimetric Investigations

scholarly journals Biodegradation of endocrine disruptor Bisphenol A by Pseudomonas putida strain YC-AE1 isolated from polluted soil, Guangdong, China

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Adel Eltoukhy ◽  
Yang Jia ◽  
Ruth Nahurira ◽  
M. A. Abo-Kadoum ◽  
Ibatsam Khokhar ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Pseudomonas Putida ◽  
Endocrine Disruptor ◽  
Polluted Soil

scholarly journals Study of factors which negatively affect expression of the phenol degradation operon pheBA in Pseudomonas putida

Microbiology ◽  
2007 ◽  
Vol 153 (6) ◽  
pp. 1860-1871 ◽  
Author(s):  
Marta. Putrinš ◽  
Andres. Tover ◽  
Radi. Tegova ◽  
Ülle. Saks ◽  
Maia. Kivisaar
Keyword(s):  
Pseudomonas Putida ◽  
Phenol Degradation ◽  
Affect Expression

Bioremediation of Biodiesel/Diesel Blend (B50) in Soil Contamination by Using Pseudomonas putida

2014 ◽  
Vol 699 ◽  
pp. 1012-1019 ◽  
Author(s):  
N.M. Sunar ◽  
Q. Emparan ◽  
Ahmad Tarmizi Abdul Karim ◽  
M. Maslan ◽  
F. Mustafa ◽  
...  
Keyword(s):  
Quality Improvement ◽  
Organic Carbon ◽  
Moisture Content ◽  
Pseudomonas Putida ◽  
Polluted Soil ◽  
Physico Chemical ◽  
Before And After ◽  
Biodiesel Fuels ◽  
Effective Microorganism ◽  
Stimulation Of

The biodiesel fuels nowadays are attracting worldwide attention as blending components or direct replacements for diesel fuel in conventional diesel engines. This study aims to investigate the effectiveness ofPseudomonas putidaas oil-biodegradable agent in soil contaminated with biodiesel/diesel blends (B50). The effectiveness on bioremediation has been conducted by examining several physico-chemical tests on biodiesel/diesel-contaminated soil before and after seeding ofPseudomonasputida. The spillage stimulation of B50 was conducted at laboratory scale for 24 days of incubation time. The results show that the bioremediation treatment able to remove up to 82%, 54%, 38% and 10% of nitrogen, sulfate, phosphate and organic carbon, respectively. The pH of soil sample was changed from pH 7.42 (Day 0) to pH 6.38 (Day 24) after the treatment. Meanwhile, the moisture content in the sample has increased from 25.61% (Day 0) to 31.83% (Day 24). All results show the good indication of quality improvement for polluted soil after treated withPseudomonasputida. It is apparent from the acquired results that the application ofPseudomonasputidais suitable as effective microorganism and potentially useful as oil-soil biodegradable agent in polluted soil.

Cloning and sequences of the first eight genes of the chromosomally encoded (methyl) phenol degradation pathway from Pseudomonas putida P35X

Gene ◽  
1994 ◽  
Vol 151 (1-2) ◽  
pp. 29-36 ◽  
Author(s):  
Lee Ching Ng ◽  
Victoria Shingle ◽  
Chun Chau Sze ◽  
Chit Laa Poh
Keyword(s):  
Pseudomonas Putida ◽  
Phenol Degradation ◽  
Degradation Pathway
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