A polyphasic taxonomic study was performed on a pink-coloured unknown bacterium isolated from discarded road tar. Comparative analysis of the 16S rRNA gene sequence demonstrated that the isolate belongs phylogenetically to the genus Azospirillum with Azospirillum lipoferum, A. melinis and A. rugosum as its closest phylogenetic relatives (96.7, 96.6 and 96.6 % similarity to the respective type s...

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 nitrogen were found between plasmid-bearin...

abstractbackground and objectives: satureja khuzestanica is valuable and endemic medicinal specie that growing widely in southwest parts of iran. this specie is rich of phenolic compound carvacrol, therefore have considerable biological activities. satureja khuzestanica is a new medicinal plant in iran, and little research has been done on. thus, the present study with the aim of evaluating the...

Pesticides are usually applied simultaneously or serially for groundnut (Arachis hypogaea L.) crop protection. This type of pesticide application often leads to a combined contamination of pesticides and their residues in the soil. Pesticides used in groundnut cultivation – monocrotophos and chlorpyrifos, singly and in combination with mancozeb and carbendazim, respectively – were tested for th...

The Azospirillum brasilense ATCC 29145 gene coding for beta-lactamase was cloned in Escherichia coli. The gene was expressed in E. coli from its own promoter as a 30-kilodalton protein, conferring resistance to high levels of beta-lactam antibiotics. The DNA sequence containing the beta-lactamase gene was found to be highly amplified in the Azospirillum genome, scattered in the chromosomal as w...

Bacteria play an important role in maintaining the health status of soil ecosystem by preforming many biological processes. Among PGPR, Azospirillum is considered as an important genus which is closely-associated with plants and shows potential to degrade organic contaminants, improve the plant health and increase crops yield. The present study was carried out for the isolation of Azospirillum ...

There are scarce data connecting water relations in Azospirillum-inoculated wheat suffering drought during anthesis with the yield and mineral content of grains. Azospirillum brasilense Sp245-inoculated seeds of Triticum aestivum ‘Pro INTA Oasis’ were sown in nonirrigated and control plots. Water potential, water content, and relative water content were determined on flag leaves. Plant water st...

Eight endophytic isolates assigned to Pseudomonas, Azospirillum, and Bacillus genera according to pheno-genotypic features were retrieved from barley seeds under selective pressure for nitrogen-fixers. Genetic relationships among related isolates were investigated through RAPD. Six isolates displayed nitrogen-fixing ability, while all could biosynthesize indolacetic acid in vitro and showed no ...

Abstract This study was aimed to investigate response of two sweet corn hybrids bacterial biofertilizers and spraying with Mg +2 Ca their impact on the yield during fall season 2021, CASH seeds (H1) ROI SOLEIL (H2) were planted in pots, when they reached 2-3 leaves treated four treatments which included without biofertilizer (B0), Azospirillum brasilense (B1) Pseudomonas fluorescens (B2) intera...