Phaseolus

stresses. In their experiment, they tested out mixtures of PGPR strains with symbiotic nitrogen-fixing rhizobia or with mycorrhizal fungi in greenhouses and agriculture. In the first experiment, under drought stress, co-inoculation of the bean (Phaseolus vulgaris L.) and a rhizobium strain (Rhizobium tropici) and two strains of P. polymyxa resulted in enlargement of height and increased nodules.This makes sense because rhizobia's natural process, under stress and low soil-water content, is to…

seedlings. Bacteria which induce nodules are capable of colonizing the roots on non-legume plants and they produce HCN, phytohormones and siderophores (Antoun et al., 1998). Rhizobium etli usually forms nitrogen-fixing nodules on the common bean, Phaseolus vulgaris, however it is a natural maize endophyte (Rosenblueth and Martínez-Romero,…