scholarly journals Activation of the symbiosis of free nitrogen-fixing bacteria with plants by an additional influx of photosynthesis products to the roots

2020 ◽  
Author(s):  
V. I. Chikov ◽  
G. A. Akhtyamova ◽  
L. A. Khamidullina
Keyword(s):  
Nitrogen Fixing ◽  
Nitrogen Fixing Bacteria ◽  
Plant System ◽  
Additional Nitrogen

An in vivo technology is proposed that enhances the export of assimilates from leaves to roots. The possibility of thus increasing the mass of the roots and the formation of additional nitrogen in the soil-plant system is shown.

scholarly journals Cowpea symbiotic efficiency, pH and aluminum tolerance in nitrogen-fixing bacteria

2014 ◽  
Vol 71 (3) ◽  
pp. 171-180 ◽  
Author(s):  
Bruno Lima Soares ◽  
Paulo Avelar Ademar Ferreira ◽  
Silvia Maria de Oliveira-Longatti ◽  
Leandro Marciano Marra ◽  
Marcia Rufini ◽  
...  
Keyword(s):  
Aluminum Tolerance ◽  
Nitrogen Fixing ◽  
Nitrogen Fixing Bacteria ◽  
Symbiotic Efficiency

scholarly journals Genomic characterization and computational phenotyping of nitrogen-fixing bacteria isolated from Colombian sugarcane fields

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Luz K. Medina-Cordoba ◽  
Aroon T. Chande ◽  
Lavanya Rishishwar ◽  
Leonard W. Mayer ◽  
Lina C. Valderrama-Aguirre ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Nitrogen Fixation ◽  
Plant Growth ◽  
Phosphate Solubilization ◽  
Nitrogen Fixing ◽  
Nitrogen Fixing Bacteria ◽  
Promising Tool ◽  
A Genome ◽  
Plant Growth Promoting ◽  
Growth Promoting

AbstractPrevious studies have shown the sugarcane microbiome harbors diverse plant growth promoting microorganisms, including nitrogen-fixing bacteria (diazotrophs), which can serve as biofertilizers. The genomes of 22 diazotrophs from Colombian sugarcane fields were sequenced to investigate potential biofertilizers. A genome-enabled computational phenotyping approach was developed to prioritize sugarcane associated diazotrophs according to their potential as biofertilizers. This method selects isolates that have potential for nitrogen fixation and other plant growth promoting (PGP) phenotypes while showing low risk for virulence and antibiotic resistance. Intact nitrogenase (nif) genes and operons were found in 18 of the isolates. Isolates also encode phosphate solubilization and siderophore production operons, and other PGP genes. The majority of sugarcane isolates showed uniformly low predicted virulence and antibiotic resistance compared to clinical isolates. Six strains with the highest overall genotype scores were experimentally evaluated for nitrogen fixation, phosphate solubilization, and the production of siderophores, gibberellic acid, and indole acetic acid. Results from the biochemical assays were consistent and validated computational phenotype predictions. A genotypic and phenotypic threshold was observed that separated strains by their potential for PGP versus predicted pathogenicity. Our results indicate that computational phenotyping is a promising tool for the assessment of bacteria detected in agricultural ecosystems.

scholarly journals Effect of Abandonment on Diversity and Abundance of Free-Living Nitrogen-Fixing Bacteria and Total Bacteria in the Cropland Soils of Hulun Buir, Inner Mongolia

PLoS ONE ◽  
2014 ◽  
Vol 9 (9) ◽  
pp. e106714 ◽  
Author(s):  
Huhe ◽  
Shinchilelt Borjigin ◽  
Yunxiang Cheng ◽  
Nobukiko Nomura ◽  
Toshiaki Nakajima ◽  
...  
Keyword(s):  
Inner Mongolia ◽  
Nitrogen Fixing ◽  
Nitrogen Fixing Bacteria ◽  
Free Living ◽  
Total Bacteria

Arbuscular mycorrhizae alleviate water deficit stress and improve antioxidant response, more than nitrogen fixing bacteria or chemical fertilizer in the evening primrose

Rhizosphere ◽  
2019 ◽  
Vol 9 ◽  
pp. 76-89 ◽  
Author(s):  
Mahmood Mohammadi ◽  
Seyed Ali Mohammad Modarres-Sanavy ◽  
Hemmatolah Pirdashti ◽  
Behnam Zand ◽  
Zeinolabedin Tahmasebi-Sarvestani
Keyword(s):  
Water Deficit ◽  
Arbuscular Mycorrhizae ◽  
Antioxidant Response ◽  
Chemical Fertilizer ◽  
Water Deficit Stress ◽  
Nitrogen Fixing ◽  
Nitrogen Fixing Bacteria ◽  
Evening Primrose
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