Plant Growth-Promoting Rhizobacteria (PGPR): ...

Plant Growth-Promoting Rhizobacteria (PGPR): The role in Sustainable Development of Agriculture

Author Name : Swati Singh, Gurgaganveer Singh Chahal, Th. Ranabir Singha, Gadikota Krishna Vamsi

ABSTRACT

The soil quality and fertility have been degraded by the use of fertilizers and pesticides in the agricultural fields. Rhizosphere bacteria, plant growth-promoting rhizobacteria (PGPR) enhance plant growth by various mechanisms like phosphate solubilization, biological nitrogen fixation, siderophore production, 1-Aminocyclopropane-1- carboxylate deaminase (ACC) production, volatile organic compounds (VOCs) production etc. Many biotic agents, such as viruses, bacteria, nematodes, weeds, and arachnids are regularly encountered by plants. Through the induction of systemic resistance, antibiosis, and competitive omission, PGPR promote plant growth. Microbes are often employed to induce systemic resistance and tolerance in plants against biotic agentsand thereby improving environmental stress tolerance. To replace the use of chemical fertilizers, pesticides and other supplements, the potentiality of PGPR in agriculture is steadily increased. Growth promoting ingredients are expected to be formed in large quantities by these rhizosphere microorganisms that effect indirectly on the general morphology of the plants. In managing sustainable agricultural production, diversity of PGPR in the rhizosphere along with their colonizing capability and mechanism of action facilitate them and act as a reliable component. This review will help in understanding the use of rhizosphere bacteria in various ways related to agricultural improvement and their mechanism of action related to plant growth-promoting attributes that are summarized in this review.

Key Words: Phosphate solubilization, Siderophore production, 1-Aminocyclopropane- 1- carboxylate deaminase (ACC), Volatile organic compounds (VOCs), Competitive omission.