Three strains of the freshwater microalgae used for wastewater treatment, Chlorella vulgaris and Chlorella sorokiniana co-immobilized separately in alginate beads with the microalgae-growth-promoting bacterium Azospirillum brasilense Cd, resulted in significant changes in microalgal-population size, cell size, cell cytology, pigment, lipid content, and the variety of fatty acids produced in com...

Root nodule isolates from a shrubby legume, Lotononis bainesii, were characterized by 16S rRNA gene sequencing and morphologically by substrate utilization patterns. The symbiotic genome of these isolates was analysed by partial sequencing of the nifH gene. Based on the results of numerical taxonomy, the isolates formed a closely related cluster, showing no correspondence to any of the known rh...

Bacterial-fungal interactions are important in the functioning of natural ecosystems. We examined possible synergistic or antagonistic effects during degradation polycyclic aromatic hydrocarbons (PAHs) by a fungal–bacterial co-culture. Bacteria and fungi were grown liquid nutrient medium supplemented with PAH substrates. The PAHs identification metabolites checked HPLC. Enzyme activities spectr...

ABSTRACT Rhizobacteria have a wide range of plant growth-promoting mechanisms action, making them an alternative and/or complementary biological input for chemical fertilizers. In this respect, the present study aimed to assess growth and nitrogen accumulation in maize plants as function Azospirillum brasilense, Bacillus subtilis, zinc application at sowing. The experiment with ‘AL Bandeirante’...

Coimmobilization of the freshwater microalga Chlorella vulgaris in alginate beads with the microalgae growth-promoting bacterium Azospirillum brasilense under semi-continuous synthetic wastewater culture conditions significantly increased the removal of ammonium and soluble phosphorus ions compared to immobilization of the microalgae alone. In continuous or batch cultures removal of these ions ...

Brazil has 180 Mha of pastures, 86 occupied with Urochloa spp. (syn. Brachiaria), and 70% in some level degradation. Inoculation plant-growth-promoting bacteria (PGPR) may represent an economic environmental feasible strategy to improve pasture production. Two greenhouse seven field trials were performed verify the effects seed inoculation at sowing or leaf-spray established pastures elite stra...

Brazil is the second world producer of bovine meat, which often relies on preserved forage to decrease seasonality production. Increased accumulation may be favored by technologies such as inoculation. Research works this theme have been conducted with Azospirillum brasilense associated oats, ryegrass and guinea grass. However, response jiggs, a widely cultivated perennial grass, plant growth-p...

UNLABELLED Elevated intracellular levels of the bacterial second messenger c-di-GMP are known to suppress motility and promote sessility. Bacterial chemotaxis guides motile cells in gradients of attractants and repellents over broad concentration ranges, thus allowing bacteria to quickly adapt to changes in their surroundings. Here, we describe a chemotaxis receptor that enhances, as opposed to...

<p><strong>Background:</strong> The majority of terrestrial plants have evolved in symbiosis with beneficial microorganisms, which help them acquire minerals that are scarce soil, such as phosphorus and some cases nitrogen. Thus, the development use biofertilizers based on microorganisms is important for partial or total replacement chemical fertilizers. arbuscular mycorrhizal...