The characteristics of a novel heterotrophic nitrifying and aerobic denitrifying bacterium, Acinetobacter junii YB

2014 ◽  
Vol 171 ◽  
pp. 1-9 ◽  
Author(s):  
Yong-Xiang Ren ◽  
Lei Yang ◽  
Xian Liang
Keyword(s):  
Acinetobacter Junii ◽  
Denitrifying Bacterium

scholarly journals Bloodstream infection caused by Acinetobacter junii in a patient with acute lymphoblastic leukaemia after allogenic haematopoietic cell transplantation

2011 ◽  
Vol 60 (3) ◽  
pp. 375-377 ◽  
Author(s):  
Rodrigo Cayô ◽  
Lucrecia Yañez San Segundo ◽  
Inmaculada Concepción Pérez del Molino Bernal ◽  
Celia García de la Fuente ◽  
Maria Aranzazu Bermúdez Rodríguez ◽  
...  
Keyword(s):  
Acute Lymphoblastic Leukaemia ◽  
Bloodstream Infection ◽  
Clinical Significance ◽  
Lymphoblastic Leukaemia ◽  
Transplant Patient ◽  
Paediatric Oncology ◽  
Correct Identification ◽  
Human Pathogen ◽  
Acinetobacter Junii ◽  
Haematopoietic Cell

Acinetobacter junii is a rare human pathogen associated with bacteraemia in neonates and paediatric oncology patients. We present a case of A. junii causing bacteraemia in an adult transplant patient with leukaemia. The correct identification of Acinetobacter species can highlight the clinical significance of the different species of this genus.

Growth and nutrient degradation characteristics of an aerobic denitrifying bacterium

2017 ◽  
pp. 99-108
Author(s):  
Ling Sun ◽  
Wen-ping Cao ◽  
Shao-hui Huang ◽  
Hui-fang Zhang ◽  
Yan Li
Keyword(s):  
Denitrifying Bacterium

scholarly journals A rare case of pleural effusion due to Acinetobacter junii in a known patient of pulmonary tuberculosis

2018 ◽  
Vol 6 (2) ◽  
pp. 726
Author(s):  
Mousumi Kilikdar ◽  
Nitin A. Ambhore ◽  
Divya S. Shekokar ◽  
Rajesh P. Karyakarte
Keyword(s):  
Pleural Effusion ◽  
Pulmonary Tuberculosis ◽  
Rare Case ◽  
Blood Stream ◽  
Paediatric Oncology ◽  
Tuberculosis Patient ◽  
Blood Stream Infections ◽  
Acinetobacter Junii ◽  
Antitubercular Treatment ◽  
Heterogenous Group

The genus Acinetobacter comprises a heterogenous group of bacterias that are mostly pandrug resistant and implicated in variety of nosocomial infections. Acinetobacter junii is a rare human pathogen and is mainly associated with blood stream infections in paediatric oncology patients. We report a rare case of pleural effusion caused by A. junii in a known pulmonary tuberculosis patient who was on cat-1 antitubercular treatment.

scholarly journals Anaerobic and aerobic degradation of pyridine by a newly isolated denitrifying bacterium.

1997 ◽  
Vol 63 (7) ◽  
pp. 2578-2585 ◽  
Author(s):  
S K Rhee ◽  
G M Lee ◽  
J H Yoon ◽  
Y H Park ◽  
H S Bae ◽  
...  
Keyword(s):  
Aerobic Degradation ◽  
Denitrifying Bacterium

scholarly journals Coaggregation among Nonflocculating Bacteria Isolated from Activated Sludge

2003 ◽  
Vol 69 (10) ◽  
pp. 6056-6063 ◽  
Author(s):  
Anushree Malik ◽  
Masashi Sakamoto ◽  
Shohei Hanazaki ◽  
Masamitsu Osawa ◽  
Takanori Suzuki ◽  
...  
Keyword(s):  
16S Rrna ◽  
Activated Sludge ◽  
Aggregate Size ◽  
Spectrophotometric Assay ◽  
Full Length ◽  
16S Rrna Genes ◽  
Rrna Genes ◽  
Acinetobacter Junii ◽  
Acinetobacter Johnsonii

ABSTRACT Thirty-two strains of nonflocculating bacteria isolated from sewage-activated sludge were tested by a spectrophotometric assay for their ability to coaggregate with one other in two-membered systems. Among these strains, eight showed significant (74 to 99%) coaggregation with Acinetobacter johnsonii S35 while only four strains coaggregated, to a lesser extent (43 to 65%), with Acinetobacter junii S33. The extent and pattern of coaggregation as well as the aggregate size showed good correlation with cellular characteristics of the coaggregating partners. These strains were identified by sequencing of full-length 16S rRNA genes. A. johnsonii S35 could coaggregate with strains of several genera, such as Oligotropha carboxidovorans, Microbacterium esteraromaticum, and Xanthomonas spp. The role of Acinetobacter isolates as bridging organisms in multigeneric coaggregates is indicated. This investigation revealed the role of much-neglected nonflocculating bacteria in floc formation in activated sludge.

Terra rossa as the substrate for biological phosphate removal from wastewater

Clay Minerals ◽  
2013 ◽  
Vol 48 (5) ◽  
pp. 725-738 ◽  
Author(s):  
G. Durn ◽  
J. Hrenovic ◽  
L. Sekovanic
Keyword(s):  
Phosphate Removal ◽  
Bacterial Cells ◽  
Total Iron Content ◽  
Terra Rossa ◽  
Acinetobacter Junii ◽  
Immobilized Bacteria ◽  
Support Materials ◽  
Three Samples ◽  
Key Factor ◽  
Extractable Iron

AbstractThree samples of terra rossa were shown to be efficient adsorbents of phosphate [P(V)] from wastewater and removed 29.9–32.6% of P(V). The total iron content in terra rossa was the key factor which determined the P(V) removal from wastewater. The original samples of terra rossa were effective support materials for the immobilization of metabolically active P(V)-accumulating bacteriaAcinetobacter junii(0.56–2.47×1010CFU g–1). The removal of oxalate-extractable iron from original sample of terra rossa increased the number of immobilized bacteria to 1.34×10–11CFU g–1, which is the largest number of immobilized bacteria reported in the literature so far. In reactors containing theA. juniiand terra rossa P(V) was removed from wastewater by simultaneous adsorption onto terra rossa and accumulation inside bacterial cells, resulting in 40.5–62.5% of P(V) removal. Terra rossa is a promising substrate for biological P(V) removal from wastewater, acting both as adsorbent of P(V) and carrier of P(V)-accumulating bacteria.

Toxicity of anionic and cationic surfactant to Acinetobacter junii in pure culture

2007 ◽  
Vol 2 (3) ◽  
pp. 405-414 ◽  
Author(s):  
Jasna Hrenovic ◽  
Tomislav Ivankovic
Keyword(s):  
Activated Sludge ◽  
Pure Culture ◽  
Sodium Dodecyl ◽  
P Uptake ◽  
Hexadecyltrimethylammonium Bromide ◽  
Negative Effects ◽  
Acinetobacter Junii ◽  
Uptake Rates ◽  
Eukaryotic Organisms ◽  
P Uptake Rates

AbstractThe harmful effects of surfactants to the environment are well known. We were interested in investigating their potential toxicity in a pure culture of Acinetobacter junii, a phosphate (P)-accumulating bacterium. Results showed a high acute toxicity of sodium dodecyl sulfate (SDS) and hexadecyltrimethylammonium bromide (HDTMA) against A. junii. The estimated EC50 values of the HDTMA for the inhibition of CFUs in the pure culture of A. junii was 3.27 ± 1.12 × 10−7 mol L−1 and for the inhibition of the P-uptake rates 2.47 ± 0.51 × 10−6 mol L−1. For SDS, estimated EC50 values for the inhibition of CFUs in the pure culture of A. junii was 5.00 ± 2.95 × 10−6 mol L−1 and for the inhibition of the P-uptake rates 3.33 ± 0.96 × 10−4 mol L−1. The obtained EC50 values in the standardised yeast toxicity test using Saccharomyces cerevisiae were 3.03 ± 0.38 × 10−4 and 4.33 ± 0.32 × 10−5 mol L−1 for SDS and HDTMA, respectively. These results emphasized the need to control concentrations of surfactants entering the activated sludge system. The negative effects of these toxicants could greatly decrease populations of P-accumulating bacteria, as well as eukaryotic organisms, inhabiting activated sludge systems, which in turn could result in the decrease of the system efficiency.

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