Estimation of root nodule development by Rhizobium sp. Using hydroponic culture

Characterization of Rhizobia for the Improvement of Soybean Cultivation at Cold Conditions in Central Europe

“…A total of 28.6% isolates were assigned to the Rhizobium species in the present study. Previous studies also reported the isolation of rhizobia belonging to Rhizobium/ Agrobacterium from soybean plants (Abaidoo et al, 2000;Chen et al, 2000;Hong et al, 2010;Youseif et al, 2014;Alam et al, 2015). The present results revealed that Bradyrhizobium is the predominant symbiont of soybean in the northeastern part of German soils.…”

Impact of rhizobial inoculation and reduced N supply on biomass production and biological N2 fixation in common bean grown hydroponically

“…Raab and Terry showed that low NO 3 − concentrations in the rhizosphere restrict cation uptake, because NO 3 − anions are needed to counterbalance cations in the xylem. BNF and the concomitant production of NH 4 + in the roots of legumes entail a further restriction of K + and Mg 2+ uptake by roots aiming at maintaining the electrochemical balance in the cytosol, since NO 3 − is not available to counterbalance nutrient cations. The measured K levels in the shoot of bean plants treated with N‐free NS were markedly lower (average across the three sampling dates: 16.8 mg g −1 ) than the lower critical level .…”

Isolation, characterization and selection of indigenous Bradyrhizobium strains with outstanding symbiotic performance to increase soybean yields in Mozambique

“…Fast-growing rhizobia assigned as Agrobacterium/Rhizobium represented a large (25%) proportion of the studied isolates. Agrobacterium ( Chen et al, 2000 , Youseif et al, 2014b ) and Rhizobium ( Abaidoo et al, 2000 , Hong et al, 2010 , Alam et al, 2015 ) strains have been previously isolated from soybean nodules. Fast-growing rhizobia are believed to have a number of advantages including high competitiveness, facility for commercial production, easier establishment in the soil ( Chatterjee et al, 1990 ) and high N 2 fixation capacity ( Youseif et al, 2014b , Alam et al, 2015 ).…”