Results 71 to 80 of about 4,819 (173)

Evaluation of Organic Substrates and Microorganisms as Bio-Fertilisation Tool in Container Crop Production

open access: yesAgronomy, 2019
Microorganisms are only effective when adequate conditions for their survival and development are provided. Among the factors that influence its effectiveness includes the type of soil or culture substrate, which works as an energy source reserve ...
Jose Luis Ruiz, Maria del Carmen Salas
doaj   +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

Characterization and effect of Azotobacter, Azospirillum and Pseudomonas associated with Ipomoea Batatas of Colombian Caribbean

open access: yesRevista Colombiana de Biotecnología, 2017
The use of plant growth promoting Rhizobacteria (PGPR) is an alternative to replace chemical fertilizers for the cultivation of agricultural crops. The aim of this research was to search, selection and characterization of PGPR from the genus Azotobacter,
Jazmín Vanessa Pérez-Pazos   +1 more
doaj   +1 more source

Modeling of nitrogen fixation and polymer production in the heterotrophic diazotroph Azotobacter vinelandii DJ

open access: yesMetabolic Engineering Communications, 2020
Nitrogen fixation is an important metabolic process carried out by microorganisms, which converts molecular nitrogen into inorganic nitrogenous compounds such as ammonia (NH3). These nitrogenous compounds are crucial for biogeochemical cycles and for the
Diego Tec Campos   +7 more
doaj   +1 more source

Unlocking nitrogen regulation: structural insights into the NifL‐NifA complex and prospects for engineered diazotrophs

open access: yesThe FEBS Journal, Volume 293, Issue 6, Page 1616-1620, March 2026.
The urgent need for sustainable agriculture places biological nitrogen fixation at the forefront of current biotechnological research. Plant growth‐promoting rhizobacteria play crucial roles in agriculture by enhancing nutrient absorption, regulating hormonal balance, and providing reduced nitrogen to plants. Among these, diazotrophic bacteria, such as
Edileusa Cristina Marques Gerhardt   +1 more
wiley   +1 more source

Correlation between nitrogen fixation rate and alginate productivity of an indigenous Azotobacter vinelandii from Iran

open access: yesIranian Journal of Microbiology, 2012
Background and Objectives: Azotobacter vinelandii, a gamma-proteobacterium, is an obligate aerobic free-living gramnegative soil bacterium capable of fixing nitrogen.
R Nosrati   +5 more
doaj  

Chemotactic Behavior of Azotobacter vinelandii [PDF]

open access: yesApplied and Environmental Microbiology, 1991
Chemotaxis was exhibited by Azotobacter vinelandii motile cells. Exposure of cells to sudden increases in attractant concentration suppressed the frequency of tumbling and resulted in smooth swimming. Cells responded chemotactically to a chemical gradient produced during metabolism.
S, Haneline, C J, Connelly, T, Melton
openaire   +2 more sources

Enhancement of Nitrogenase Activity in Recombinant Escherichia coli by Replacing Upstream Region of nif Operon from Paenibacillus Species

open access: yesChemBioChem, Volume 27, Issue 3, 12 February 2026.
Biological N2 fixation by nitrogenase offers a sustainable alternative to the Haber–Bosch process. Heterologous nitrogenase production in Escherichia coli is a promising strategy. We engineered E. coli with nitrogen fixation (nif) operons from diazotrophic Paenibacillus species.
Yuki Honda   +4 more
wiley   +1 more source

Improving substrate properties and foxtail millet growth in gold mine tailings using Azotobacter consortium

open access: yesJournal of Degraded and Mining Lands Management
Improper disposal of mercury (Hg)-contaminated tailings on agricultural fields can reduce land quality for food production. A pot experiment was conducted to evaluate the effect of the Azotobacter consortium, comprising Azotobacter tropicalis S5, A ...
Reginawanti Hindersah   +5 more
doaj   +1 more source

Evaluación de la asociación bacterias fijadoras de nitrógeno - líneas interespecíficas de arroz-nitrógeno, en Typic haplustalf. Ibagué, Colombia Evaluation of the association nitrogen fixing bacterias interspecific - rice lines - nitrogen, in typic haplustalf. Ibagué, Colombia

open access: yesActa Agronómica, 2008
El estudio se llevó a cabo en la hacienda Cauchitos, municipio de Ibagué, departamento del Tolima (Norte 4° 23' 51" y Oeste 75° 9' 7", 979 msnm, 24.3°C, bosque seco tropical (bs-T), con el objetivo de evaluar las asociaciones entre bacterias fijadoras de
Margarita M Vallejo   +2 more
doaj  

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