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Environmental stress factors such as salinity, drought, flood, high and low temperatures cause significant losses to agricultural crop productivity, thereby affecting global food security. Traditional agricultural practices hugely relied on chemical fertilizers, wherein although higher crop yield and productivity were observed, the soil health was seriously deteriorated. Further, the agrochemicals had a devastating effect on human health and environment. Under these circumstances, plant growth-promoting rhizobacteria (PGPR) were widely used as biofertilizers to improve the growth and productivity of crops not only in fertile soils but also in contaminated soils. Further PGPR were also employed to protect the plants from abiotic stress-induced damage. The usage of PGPR is a sustainable and environment friendly approach, which is hugely favoured due to varied benefits it offer, such as improved soil texture, decreased dependence on agrochemicals and ensured agricultural sustainability. In recent times, nanotechnology revolution in agriculture has gained significant attention due to the application of various nanomaterials or nano-based fertilizers to increase crop productivity. Nano particles were also added as amendments to the soil to enhance soil texture for improved agricultural yields. Since PGPR and nanomaterials offer varied benefits to soil and plants in isolation, it is expected that the combinatorial effect will be substantial than the effects observed by PGPRs or nanoparticles alone. In agreement, reports have indicated a significant increase in crop yields due to the combined application of PGPRs and nanoparticles than single treatments, advocating the usage of cocktail of PGPR’s and nanomaterials as nanobiofertilizers for improved soil properties and increased crop yield. In the current chapter, functional aspects of combined treatments of PGPRs and nanomaterials for sustainable crop productivity and abiotic stress alleviation will be discussed in detail, advocating their use as an ecofriendly and sustainable approach.

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Synergistic Effect of Plant Growth–Promoting Rhizobacteria and Nanoparticles in Abiotic Stress Alleviation in Plants

  • 章节

  • 发表日期：

    2026年

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  • B. Chithradevi,
  • M. Petheeswaran,
  • Kavya Bakka,
  • Dinakar Challabathula

摘要

Environmental stress factors such as salinity, drought, flood, high and low temperatures cause significant losses to agricultural crop productivity, thereby affecting global food security. Traditional agricultural practices hugely relied on chemical fertilizers, wherein although higher crop yield and productivity were observed, the soil health was seriously deteriorated. Further, the agrochemicals had a devastating effect on human health and environment. Under these circumstances, plant growth-promoting rhizobacteria (PGPR) were widely used as biofertilizers to improve the growth and productivity of crops not only in fertile soils but also in contaminated soils. Further PGPR were also employed to protect the plants from abiotic stress-induced damage. The usage of PGPR is a sustainable and environment friendly approach, which is hugely favoured due to varied benefits it offer, such as improved soil texture, decreased dependence on agrochemicals and ensured agricultural sustainability. In recent times, nanotechnology revolution in agriculture has gained significant attention due to the application of various nanomaterials or nano-based fertilizers to increase crop productivity. Nano particles were also added as amendments to the soil to enhance soil texture for improved agricultural yields. Since PGPR and nanomaterials offer varied benefits to soil and plants in isolation, it is expected that the combinatorial effect will be substantial than the effects observed by PGPRs or nanoparticles alone. In agreement, reports have indicated a significant increase in crop yields due to the combined application of PGPRs and nanoparticles than single treatments, advocating the usage of cocktail of PGPR’s and nanomaterials as nanobiofertilizers for improved soil properties and increased crop yield. In the current chapter, functional aspects of combined treatments of PGPRs and nanomaterials for sustainable crop productivity and abiotic stress alleviation will be discussed in detail, advocating their use as an ecofriendly and sustainable approach.