Abstract
Vegetable cultivation is a promising economic activity, and vegetable consumption is important for human health due to the high nutritional content of vegetables. Vegetables are rich in vitamins, minerals, dietary fiber, and several phytochemical compounds. However, the production of vegetables is insufficient to meet the demand of the ever-increasing population. Plant-growth-promoting rhizobacteria (PGPR) facilitate the growth and production of vegetable crops by acquiring nutrients, producing phytohormones, and protecting them from various detrimental effects. In this review, we highlight well-developed and cutting-edge findings focusing on the role of a PGPR-based bioinoculant formulation in enhancing vegetable crop production. We also discuss the role of PGPR in promoting vegetable crop growth and resisting the adverse effects arising from various abiotic (drought, salinity, heat, heavy metals) and biotic (fungi, bacteria, nematodes, and insect pests) stresses.
Highlights
Vegetables are an important component of food and nutrition as they provide energy, vitamins, body-building nutrients, and minerals for human health [1]
This review summarizes the most updated findings on the role of Plant-growthpromoting rhizobacteria (PGPR) as biofertilizers for vegetable crop growth and production
Various PGPR can be used as biofertilizers in vegetable crop production
Summary
Vegetables are an important component of food and nutrition as they provide energy, vitamins, body-building nutrients, and minerals for human health [1]. Azospirillum brasilense, Azotobacter salinestris, Burkholderia phytofirmans, Bacillus megaterium, Bacillus subtilis, Paenibacillus favisporus, Paenibacillus polymyxa, Pseudomonas fluorescens, Pseudomonas stutzeri, and Rahnella aquatilis, are consistently part of the PGPR-diversified taxa [45] These bacteria provide a plethora of plant benefits including increased root growth, nutrient uptake, and plant hormone stimulation, suppression of pathogenic activity, and restoration of soil health through the mineralization of organic pollutants [46,47]. They are not host specific, meaning that they have the advantage of being able to promote the growth of a broad range of hosts. We discuss the impact of PGPR on vegetables under biotic and abiotic stresses and provide a mechanistic overview for ameliorating several stresses
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