Business and Management

Soil Beneficial Bacteria And Their Role In Plant Growth Promotion: A Review

Soil bacteria are very important in biogeochemical cycles and have been used for the production of crops for decades.

Free-living soil bacteria beneficial to plant growth, commonly referred to as a plant growth-promoting rhizobakteria (PGPR), can improve plant growth by colonizing plant roots. PGPR promotes plant health also called rhizobakteria (PHPR) or nodules promote rhizobakteria (NPR).  You can get to know about beneficial soil bacteria via

Image Source: Google 

This is linked to the rhizosphere, which is an important soil ecological environment for plant-microbe interactions. Symbiotic nitrogen-fixing bacteria, including cyanobacteria of the genus Rhizobium, Bradyrhizobium, Azorhizobium, Allorhizobium, Sinorhizobium and Mesorhizobium.

Nitrogen-free living bacteria or associative nitrogen fixers, such as bacteria from Azospirillum species, Enterobacter, Klebsiella and Pseudomonas, have been shown to attach to the roots and efficiently colonize the root surface.

PGPR has the potential to contribute to the promotion of sustainable plant growth. Generally, PGPR functions in three different ways: synthesize certain compounds for plants, facilitate the absorption of certain nutrients from the soil, and reduce or prevent the plants from disease.

Plant promotion of growth and development can be facilitated either directly or indirectly. No direct promotion of plant growth includes the prevention of ill effects of phytopathogenic organisms.

This can be achieved by the production of siderophores, are molecules that bind to the metal pieces. Biological control of soil-borne plant pathogens and antibiotic synthesis has also been reported in several species of bacteria.

Tagged ,