l-Glutamic acid induced the colonization of high-efficiency nitrogen-fixing strain Ac63 (Azotobacter chroococcum) in roots of Amaranthus tricolor

Azotobacter chroococcum (ATCC 7493) was grown in continuous culture with intense vortex aeration (stirring rate 1750 rpm) with up to 50% O2 in the gas phase. Under these conditions the dissolved O2 generally remained at zero while the cell growth rose to about twice the normally accepted value. The meaning of the term "O2-limitation" in N2-fixing A. chroococcum cultures is critically examined.

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Evidence of reduced poly-B-hydroxybutyrate biosynthesis in free-living nitrogen-fixing bacteria, Azotobacter chroococcum, following acquired resistance to the fungicide captan

The Science of The Total Environment ◽

10.1016/0048-9697(92)90160-t ◽

1992 ◽

Vol 123-124 ◽

pp. 361-375 ◽

Cited By ~ 1

Author(s):

N. Miclaus ◽

C. Vannini ◽

G. Celano ◽

A. Piccolo ◽

S. Simoncini

Keyword(s):

Acquired Resistance ◽

Azotobacter Chroococcum ◽

Nitrogen Fixing ◽

Nitrogen Fixing Bacteria ◽

Free Living

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A new phenol oxidase produced during melanogenesis and encystment stage in the nitrogen-fixing soil bacterium Azotobacter chroococcum

Applied Microbiology and Biotechnology ◽

10.1007/s00253-011-3093-x ◽

2011 ◽

Vol 90 (3) ◽

pp. 1037-1049 ◽

Cited By ~ 13

Author(s):

Susanne Herter ◽

Marlen Schmidt ◽

Mark L. Thompson ◽

Annett Mikolasch ◽

Frieder Schauer

Keyword(s):

Phenol Oxidase ◽

Azotobacter Chroococcum ◽

Soil Bacterium ◽

Nitrogen Fixing

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Productivity of grain corn in the lower don after application of mineral fertilizers and bacterial preparations

The Agrarian Scientific Journal ◽

10.28983/asj.y2019i9pp11-17 ◽

2019 ◽

pp. 11-17

Author(s):

Roman Aleksandrovich Kamenev ◽

Alisa Aleksandrovna Sevostyanova ◽

Natalya Nikolaevna Gusakova ◽

Lyudmila Aleksandrovna Gudova

Keyword(s):

High Efficiency ◽

Mineral Fertilizer ◽

Ordinary Chernozem ◽

Mineral Fertilizers ◽

Nitrogen Fixing ◽

Combined Application ◽

Yield And Quality ◽

Phosphorus Fertilizers ◽

Nitrogen Phosphorus

The results of a three-year field experiment to study the effect of mineral fertilizers and biopreparations with active strains of associative nitrogen-fixing microorganisms on the yield and quality of corn on the ordinary chernozem of the Lower Don are presented. The application of a combination of mineral fertilizers in a dose of N60P40K40 ensured high efficiency. The increase in grain yield compared to the control option was 1.85 t / ha, or 61.3%. The increase in yield after a bacterial preparation application with a strain of associative nitrogen-fixing microorganisms 2P-7 without mineral fertilizers was 40.1%, after application of the biopreparation 2P-9 with nitrogen-phosphorus fertilizers in a dose of N30P40 - 55.3%. The greatest effect in protein harvesting was after application of N60P40K40 - 81.6%, after application of 2P-7 and 2P-9 - 51.9 and 55.6%, respectively. After their combined application with nitrogen-phosphorus fertilizers it increased by 20.9 and 22.2%. The level of profitability varied from 17% after application of full mineral fertilizer to 69% under the influence of biological products of associative nitrogen-fixing microorganisms.

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