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Enhancing plant resistance to biotic stresses through rhizobacteria for sustainable agriculture

Authors :
Jameel M. AL-KHAYRI
Tahir KHAN
Source :
Notulae Botanicae Horti Agrobotanici Cluj-Napoca, Vol 52, Iss 2 (2024)
Publication Year :
2024
Publisher :
AcademicPres, 2024.

Abstract

Plant Growth-Promoting Rhizobacteria (PGPR) play a crucial role in the enhancement of plant growth. These microorganisms inhabit plant roots and positively influence plant growth through various mechanisms. PGPR facilitate nutrient absorption, combat pathogens, and regulate plant hormone levels. Their impact is achieved through direct actions such as hormone production, enhanced iron uptake via siderophores, phosphate solubilization, and emission of volatile compounds that affect plant signaling and metabolism. In addition, PGPR interactions with rhizosphere microorganisms and the soil indirectly improve plant growth. Numerous biotic stressors affect plant PGPR. The interaction between plants and microorganisms boosts the host resistance to biotic stress. This interaction also regulates the rhizosphere soil by converting organic compounds into plant-absorbable forms, increasing molecule mobilization, and supplying amino acids, carbohydrates, lipids, metabolites, and phytohormones to the host plants. In instances where plants do not secrete lipids, amino acids, carbohydrates, or terpenoids during these interactions, microorganisms contribute these compounds to plants. Investigating these mechanisms, along with changes in gene expression and receptor-mediated signaling in plants, is vital. Utilization of microbial sources as alternatives to conventional agricultural methods is a promising approach. Incorporation of these sources can enhance plant production, quality, growth, and yield.

Details

Language :
English
ISSN :
0255965X and 18424309
Volume :
52
Issue :
2
Database :
Directory of Open Access Journals
Journal :
Notulae Botanicae Horti Agrobotanici Cluj-Napoca
Publication Type :
Academic Journal
Accession number :
edsdoj.8933d64eeaa74cf2b0a5c114df9324cb
Document Type :
article
Full Text :
https://doi.org/10.15835/nbha52213650