Results 61 to 70 of about 12,621 (206)

Oxygen transfer rate during the production of alginate by Azotobacter vinelandii under oxygen-limited and non oxygen-limited conditions [PDF]

open access: yes, 2011
Background The oxygen transfer rate (OTR) and dissolved oxygen tension (DOT) play an important role in determining alginate production and its composition; however, no systematic study has been reported about the independent influence of the OTR and DOT.
Esteban Lozano   +2 more
core   +2 more sources

A Foundation for Advancing Studies of the Biodegradation of Polyethylene Surrogates by Environmental and Model Laboratory Microbes

open access: yesEnvironmental Microbiology Reports, Volume 18, Issue 2, April 2026.
A polyethylene surrogate sample containing paraffin, polywax and polyethylene was exposed to selected microbes identified in this study. This image shows the surface of this surrogate following a six‐week incubation with Rhodococcus jostii. ABSTRACT Polyethylene represents a particularly recalcitrant class of plastics that persist for decades in the ...
Bilge Bahar Camur   +5 more
wiley   +1 more source

Comparison of five bacterial strains producing siderophores with ability to chelate iron under alkaline conditions

open access: yesAMB Express, 2019
Iron deficiency is one of the main causes of chlorosis in plants, which leads to losses in field crops quality and yield. The use of synthetic chelates to prevent or correct iron-deficiency is not satisfactory mainly due to their poor biodegradability ...
Carlos M. H. Ferreira   +4 more
doaj   +1 more source

Classifying the metal dependence of uncharacterized nitrogenases [PDF]

open access: yes, 2013
Nitrogenase enzymes have evolved complex iron–sulfur (Fe–S) containing cofactors that most commonly contain molybdenum (MoFe, Nif) as a heterometal but also exist as vanadium (VFe, Vnf) and heterometal-independent (Fe-only, Anf) forms.
Boyd, Eric S.   +3 more
core   +2 more sources

Predicting compatibility between ferredoxins and the Fe protein of nitrogenase using in silico protein modeling

open access: yesProtein Science, Volume 35, Issue 3, March 2026.
Abstract Biological nitrogen fixation is the process by which certain bacteria and archaea use the enzyme nitrogenase to reduce atmospheric nitrogen into bioavailable ammonium. Engineering non‐nitrogen‐fixing organisms, like plants, to use nitrogenase could reduce dependency on synthetic fertilizer and mitigate the environmental impacts of industrial ...
Adity Biswas   +2 more
wiley   +1 more source

Genetic diversity of Azotobacter strains isolated from soils by amplified ribosomal DNA restriction analysis [PDF]

open access: yes, 2014
Strains of Azotobacter mediate in the nitrogen fixation process by reducing of N2 to ammonia. In this study, 50 strains were isolated from different rhizospheric soil in central Iran, by using soil paste-plate method.
Asgharzadeh, A., Mazinani, Z.
core   +1 more source

The Prebiotic and Techno‐Functional Potential of Microbial Exopolysaccharides for Human Health and Food Systems

open access: yesComprehensive Reviews in Food Science and Food Safety, Volume 25, Issue 2, March 2026.
ABSTRACT Microbial exopolysaccharides (EPS) represent a diverse class of biopolymers holding considerable promise as functional food ingredients. This review analyzes the dual function of microbial EPS as a candidate for prebiotic agents and techno‐functional additives.
Md. Abdur Razzak   +7 more
wiley   +1 more source

Glucose uptake in Azotobacter vinelandii occurs through a GluP transporter that is under the control of the CbrA/CbrB and Hfq-Crc systems

open access: yesScientific Reports, 2017
Azotobacter vinelandii, a strict aerobic, nitrogen fixing bacterium in the Pseudomonadaceae family, exhibits a preferential use of acetate over glucose as a carbon source.
Elva Quiroz-Rocha   +8 more
doaj   +1 more source

Effect of bio-fertilizers and nitrogen on quantitative and qualitative characteristics of tepals in saffron (Crocus sativus L.) [PDF]

open access: yesZirā̒at va Fanāvarī-i Za̒farān, 2018
In order to investigate the effect of different nitrogen sources on some quantitative and biochemical characteristics of Saffron Petals, an experiment was conducted based on randomized complete block design with three replications on the Research Farm of
Azizollah Kheiry   +3 more
doaj   +1 more source

Genotypic Characterization of Azotobacteria Isolated from Argentinean Soils and Plant-Growth-Promoting Traits of Selected Strains with Prospects for Biofertilizer Production [PDF]

open access: yes, 2013
The genetic diversity among 31 putative Azotobacter isolates obtained from agricultural and non-agricultural soils was assessed using rep-PCR genomic fingerprinting, and identified to species level by ARDRA and partial 16S rRNA gene sequence analysis ...
Cassan, Fabricio Dario   +5 more
core   +4 more sources

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