Results 21 to 30 of about 12,693 (212)

Respiration in Azotobacter vinelandii and its relationship with the synthesis of biopolymers

Electronic Journal of Biotechnology, 2020
Azotobacter vinelandii is a gram-negative soil bacterium that produces two biopolymers of biotechnological interest, alginate and poly(3-hydroxybutyrate), and it has been widely studied because of its capability to fix nitrogen even in the presence of ...
Tania Castillo, Andrés García, Claudio Padilla-Córdova, Alvaro Díaz-Barrera, Carlos Peña   +4 more
doaj   +1 more source

Multiple chromosomes of Azotobacter vinelandii [PDF]

Journal of Bacteriology, 1989
The number of copies of the genes leuB, nifH, nifD, and nifK per cell of Azotobacter vinelandii has been determined to be about 80. A beta-lactamase gene was integrated into the A. vinelandii chromosome by single-point crossover. Subsequently, we have been able to detect nearly 80 copies of this beta-lactamase gene per cell of A.
P, Nagpal, S, Jafri, M A, Reddy, H K, Das   +3 more
openaire   +2 more sources

Increases in alginate production and transcription levels of alginate lyase (alyA1) by control of the oxygen transfer rate in Azotobacter vinelandii cultures under diazotrophic conditions

Electronic Journal of Biotechnology, 2021
Background: Alginates are polysaccharides used in a wide range of industrial applications, with their functional properties depending on their molecular weight. In this study, alginate production and the expression of genes involved in polymerization and
Belén Ponce, Viviana Urtuvia, Nataly Maturana, Carlos Peña, Alvaro Díaz-Barrera   +4 more
doaj   +1 more source

Bacterial nitrate assimilation: gene distribution and regulation [PDF]

, 2011
In the context of the global nitrogen cycle, the importance of inorganic nitrate for the nutrition and growth of marine and freshwater autotrophic phytoplankton has long been recognized.
Andrew J. Gates, Assumpção, Caballero, Cabello, Chai, Chen, Conrado Moreno-Vivián, David J. Richardson, Flores, Forchhammer, Forchhammer, Gates, Gutierrez, Ishida, Kayumov, Koropatkin, Leigh, Li, Lin, Lledó, Llácer, M. Dolores Roldán, Moreno-Vivián, Nakano, Ogawa, Ohashi, Pawlowski, Paz-Yepes, Pino, Puerta-Fernández, Ramos, Richardson, Sanders, Shao, Shu, Shu, Stuart J. Ferguson, Swanson, Szeto, Toukdarian, Víctor M. Luque-Almagro, Weiss, Weiss, Wray, Wu   +44 more
core   +1 more source

Evaluating the growth performance of Two Azotobactor spp. In liquid glucose broth and tryptic peptone broth as inoculum for the production of bio-fertilizers

Tropical Agricultural Research, 2017
Biofertilizers with Azotobacter spp. releases available nitrogen to the plant rhizosphere. A media that yield a high viable inoculum cell count in a shorter incubation period is important for commercial production of biofertilizers.
A. D. Nagalla, D. V. Jayatilake, V. Herath, L. D. B. Suriyagoda   +3 more
doaj   +1 more source

Tryptophan-Tryptophan energy migration as a tool to follow apoflavodoxin folding [PDF]

, 2008
Submolecular details of Azotobacter vinelandii apoflavodoxin (apoFD) (un)folding are revealed by time-resolved fluorescence anisotropy using wild-type protein and variants lacking one or two of apoFD's three tryptophans.
Visser, N.V., Westphal, A.H., Hoek, A., van, Mierlo, C.P.M., van, Visser, A.J.W.G., Amerongen, H., van   +5 more
core   +1 more source

Automatic Control for the Production of Alginate by Azotobacter Vinelandii

IEEE Access, 2019
Alginates are polymers used in the food and pharmaceutical industries as stabilizing, thickening, gel or film-forming agents. Food coatings formed from alginate have shown to have excellent properties such as flexibility and resistance to tearing.
Gonzalo Farias, Ernesto Fabregas, Alvaro Diaz-Barrera, Belen Ponce, Cristian Castro, Sebastian Dormido-Canto   +5 more
doaj   +1 more source

Effects of field inoculation with VAM and bacteria consortia on root growth and nutrients uptake in common wheat [PDF]

, 2018
This study investigated the effects of a commercial biofertilizer containing the mycorrhizal fungus Rhizophagus irregularis and the diazotrophic N-fixing bacterium Azotobacter vinelandii on root and shoot growth, yield, and nutrient uptake in common ...
Barion, Giuseppe, Dal Cortivo, Cristian, Dramis, Lucia, Ferrari, Manuel, Panozzo, Anna, Vamerali, Teofilo, Visioli, Giovanna   +6 more
core   +2 more sources

The Siderophore Metabolome of Azotobacter vinelandii [PDF]

Applied and Environmental Microbiology, 2016
ABSTRACT In this study, we performed a detailed characterization of the siderophore metabolome, or “chelome,” of the agriculturally important and widely studied model organism Azotobacter vinelandii . Using a new high-resolution liquid chromatography-mass spectrometry (LC-MS) approach, we found over 35 ...
Oliver, Baars, Xinning, Zhang, François M M, Morel, Mohammad R, Seyedsayamdost   +3 more
openaire   +2 more sources

A Phasin with Many Faces: Structural Insights on PhaP from Azotobacter sp. FA8 [PDF]

, 2014
Phasins are a group of proteins associated to granules of polyhydroxyalkanoates (PHAs). Apart from their structural role as part of the PHA granule cover, different structural and regulatory functions have been found associated to many of them, and ...
Bucci, Hernán Andrés, Catone, Mariela Verónica, Di Paola, Matías Ezequiel, Mezzina, Mariela Paula, Pettinari, María Julia, Wetzler, Diana Elena   +5 more
core   +7 more sources