Bacteroids prepared from nodules of soybean and bean were tested for viability. Contrary to the prevailing view that bacteroids are nonviable, it was found that bacteroids averaged 90% viability, irrespective of Rhizobium strain, nodule age, or nodule environment.

The Root nodules of Cajanus Cajan plant produced high amount of (35.56 ug/gm) of Indole acetic acid from Hg plants as compared to the N plant. The IAA was measured maximum from Rhizobium spp. of C.cajan plant at 24h, when the bacteria reached the stationary phase of growth. Mannitol & KNO3 preferred to be a good carbon and nitrogen source for IAA production in all N, Ng, H & Hg Rhizobium strain...

DNA Content, Nodules, Bacteroids, Rhizobium, Soybean The DNA content of bacteroids from large nodules of soybean plants infected with Rhizobium japonicum strain 61 -A -101 was found to be 1.20 x 10~14 g per cell. Bacteroids from smaller nodules had slightly less DNA as did the stationary phase, free-living cells; both giving a value of 0.92 x 10-14 g per cell. In comparing these data with those...

Phaseolus vulgaris (common bean) can be nodulated by several Rhizobium species. Among them, Rhizobium tropici has a relatively broad host range, as it is able to infect beans, Leucaena trees, and several other legumes. This work describes the isolation and the characterization of extracellular factors (Nod factors) whose production from R. tropici was triggered by the transcriptional activation...

A symbiont, isolated from root nodules of Crotalaria saltiana Andr., was identified as Rhizobium sp. It produced large amount of extracellular polysaccharides (EPS) in broth culture in yeast extract mannitol (YEM) medium. The EPS production and growth started simultaneously, though they have different stationary phases. The symbiont produced maximum EPS (16 μg/mL) when the medium was supplement...

Most plant lectins exhibit other properties. Some also bind plant growth regulators, the cytokinins, which are small hydrophobic molecules derivate from adenine [5,6]. They are secreted proteins and are found in vacuoles, cell walls, or intercellular spaces, of just about every plant organ [7]. Legume root lectins, are involved in the recognition and binding of Rhizobium and Brudyrhizobium sp. ...

AbstractSeveral studies have shown that berseem clover is one of the most important winter leguminous crops as fodder for animals due to its high content crude protein. In Egypt, cultivation abundant in soils whether ancient or reclaimed soils. This study was designed evaluate effect biofertilizers on productivity cultivated under sandy soil conditions Ismailia Research Station, Governorate. To...