Plasmids of Azotobacter vinelandii [PDF]
Four laboratory strains and two isolates of Azotobacter vinelandii were found to contain plasmids. Twenty-five laboratory strains which could fix nitrogen did not have free, covalently closed circular plasmid DNA. The plasmids varied in size from 9 to 52 megadaltons, and each strain yielded only one plasmid. No discernible differences in ability to fix
Maia, Mauricio +2 more
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Interspecific Transformation in Azotobacter [PDF]
SUMMARY: This paper describes the results obtained in experiments on interspecific transformation in Azotobacter. When Azotobacter chroococcum was transformed with the DNA of A. vinelandii 6–10% of the colonies differed from the parent strain in colour, colony character and biochemical characteristics.
M, Sen, S P, Sen
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تاثیر کاربرد کود مرغی حاوی انروفلوکساسین بر تنفس، بیوماس میکروبی و جمعیت برخی باکتریهای مفید خاک [PDF]
غلظت آنتیبیوتیکها در خاک بر اثر اضافه کردن کود مرغی آلوده به آنتیبیوتیک افزایش مییابد و ممکن است جامعه میکروبی خاک را تحت تاثیر قرار دهد. هدف این پژوهش تاثیر اضافه نمودن کود مرغی محتوی انروفلوکساسین به خاک بر جمعیتAzotobacter spp.، Pseudomonas ...
مهسا محمدزاده +3 more
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Microbiological properties of rankers in the region of Western Serbia [PDF]
Ranker, or humus-silicate soil, is one of the most represented types of soil in the hilly-mountainous region of Western Serbia. Aiming to determine biogenity of such type of soil in Western Serbia, representation of the total microflora, fungi ...
Rasulić Nataša +4 more
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Isolation, Characterization and Identification of Salt Tolerant Nitrogen Fixing Bacteria [PDF]
The present investigation deals with the isolation and characterization of nitrogen-fixing bacteria (NFB) such as Azotobacter sp. and Azospirillum sp. from paddy field rhizosphere of Damietta governorate, Egypt. Twelve Azotobacter spp.
M. El-Rian, S. El Kadi, H. El-Fadaly
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Azotobacter Genomes: The Genome of Azotobacter chroococcum NCIMB 8003 (ATCC 4412) [PDF]
The genome of the soil-dwelling heterotrophic N2-fixing Gram-negative bacterium Azotobacter chroococcum NCIMB 8003 (ATCC 4412) (Ac-8003) has been determined. It consists of 7 circular replicons totalling 5,192,291 bp comprising a circular chromosome of 4,591,803 bp and six plasmids pAcX50a, b, c, d, e, f of 10,435 bp, 13,852, 62,783, 69,713, 132,724 ...
Robert L Robson +4 more
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EFFECT OF HUMIC ACID LEVELS AND BIOSTIMULANT TREATMENTS ON GROWTH, YIELD, AND VOLATILE OIL PRODUCTION OF CORIANDER (Coriandrum sativum L.) [PDF]
A study was done during two consecutive seasons of 2022/2023 and 2023/2024 to study the effects of humic acid (HU 4, 8, and 12 kg/hectare) as the main plot and BM (Azotobacter chrococum, Azospirulm Brasiliense, and Bacillus polymaxa) and algae extracts ...
Rabeeah Altarhouni +4 more
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EFFECT OF USING COMPOST, MINERAL NITROGEN AND BIOFERTILIZER ON MICROBIAL POPULATION IN THE RHIZOSPHERE OF WHEAT PLANTS CULTIVATED IN SANDY SOIL. [PDF]
A pot experiment was carried out on sandy soil at Mansoura Agricultural Rresearch Station during winter 2007-2008 to study the effect of biofertilization, compost and mineral nitrogen fertilization on microbial population and mycorrhizal infection in ...
M. El-Awady +4 more
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A pot experiment was conducted during 2013–14 to observe the potential role of some organics and bio-organics such as Calotropis procera, Glomus fasciculatum, and Azotobacter chroococcum on some growth attributes of chickpea and subsequently on the root ...
Mohammad Akram +4 more
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