Plant growth-promoting rhizobacteria (PGPR) of the genus Pseudomonas have been reported to increase the yield of nonleguminous plants. Inoculation with Pseudomonas has been found by some authors to improve nodulation of legumes. This work examined the response of various legumes to a combined inoculation with Pseudomonas and nodule bacteria in pot experiments under field conditions in gray fore...

Abstract Background A 2-year field trial was conducted to test the effect of biochar addition (0, 15, 30, and 45 t hm −2 ) on soil properties, nutrients, diazotrophic community diversity, abundance, structure, soybean growth, yield, quality. Furthermore, we aimed explore responses diazotrophs, grain quality nine environmental factors. Rhizosphere plant samples were collected after harvest. Resu...

Nitrogen fixation associated with sugarcane was monitored ushg acetylene reducti,on tests and bacteriological techniques. Soil cores and trash from cane fields showed acetylene reducing activity. This activity was usually low in association with sandy soils. Where high activity was detected in soil cores it correlat~d with the wet weight of roots in each core. Nitrogen-fixing bacteria resemblin...

The search for sustainable agriculture has increased interest in using endophytic bacteria to reduce fertilizer use and increase stress resilience. Stress-adapted plants are a potential source of these bacteria. Some species have not yet been evaluated this, such as pangolão grass, from which we considered plant growth promoters. Bacteria the root, colm, leaves, rhizospheric soil were isolated,...

background: ligament reconstruction is a common procedure in orthopedic surgery. although several popular techniques are currently in use, new methods are proposed for secure fixation of the tendon graft into the bone tunnel. purposes: we sought to introduce our new technique of bashti bone plug for fixation of soft tissue graft in anterior cruciate ligament (acl) reconstruction and to compare ...

Termites host a gut microbiota of diverse and essential symbionts that enable specialization on dead plant material; an abundant, but nutritionally imbalanced food source. To supplement the severe shortage of dietary nitrogen (N), some termite species make use of diazotrophic bacteria to fix atmospheric nitrogen (N2). Fungus-growing termites (subfamily Macrotermitinae) host a fungal exosymbiont...

One of the important and necessary practices for improving nutrients availability in sustainable agriculture is using microorganisms. Beside the negative effects of chemical fertilizers on the soil and human health, plant growth promoting rhizobacteria are known as an alternative to supply the organic nutrients of plants during the past two decades. Enriching soil fertility by eco-friendly meth...

The methodology, characteristics and application of the sensitive C(2)H(2)-C(2)H(4) assay for N(2) fixation by nitrogenase preparations and bacterial cultures in the laboratory and by legumes and free-living bacteria in situ is presented in this comprehensive report. This assay is based on the N(2)ase-catalyzed reduction of C(2)H(2) to C(2)H(4), gas chromatographic isolation of C(2)H(2) and C(2...

In rice paddy soil, biological nitrogen fixation is important for sustaining soil fertility and growth. Anaeromyxobacter Geobacteriaceae, iron-reducing bacteria belonging to Deltaproteobacteria, are newly discovered nitrogen-fixing dominant in soils. They utilize acetate, a straw-derived major carbon compound as energy source, ferric iron compounds electron acceptors anaerobic respiration. our ...

Nitrogen-fixing activity associated with different wetland rice varieties was measured at various growth stages by an in situ acetylene reduction method after the activities of blue-green algae (cyanobacteria) in the flood water and on the lower portion of the rice stem were eliminated. Nitrogen-fixing activities associated with rice varieties differed with plant growth stages. The activities i...