Plant growth promotion in cereal and leguminous agricultural important plants: From microorganism capacities to crop production

摘要

Plant growth-promoting rhizobacteria (PGPR) are free-living bacteria which actively colonize plant roots,exerting beneficial effects on plant development. The PGPR may (i) promote the plant growth either byusing their own metabolism (solubilizing phosphates, producing hormones or fixing nitrogen) or directlyaffecting the plant metabolism (increasing the uptake of water and minerals), enhancing root development,increasing the enzymatic activity of the plant or “helping” other beneficial microorganisms toenhance their action on the plants; (ii) or may promote the plant growth by suppressing plant pathogens.These abilities are of great agriculture importance in terms of improving soil fertility and crop yield, thusreducing the negative impact of chemical fertilizers on the environment. The progress in the last decadein using PGPR in a variety of plants (maize, rice, wheat, soybean and bean) along with their mechanismof action are summarized and discussed here.