Plant Growth Promoting Rhizobacteria (Pgpr): Prospects and Application

Pahari, Avishek; Pradhan, Alisha; Nayak, Suraja Kumar; Mishra, Bibhuti Bhusan

doi:10.1201/9780429485794-5

Cited by 4 publications

(7 citation statements)

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“…There is another type of siderophores known as iron-load siderophores or heterologous siderophores which is produced by many organisms and utilized by others. Normally Pseudomonas putida has the ability to utilize heterologous siderophores produced by other organisms and increase the availability of iron to plant (Pahari et al, 2020), for example, inoculation of mung bean (Vigna radiata L. Wilczek) with the siderophoreproducing Pseudomonas strain GRP3 improves growth, increases chlorophyll contents, and decreases chlorosis under Fe-restricted conditions compared to un-inoculated controls (Ali et al, 2017). Recently, researchers reported that bacteria which have the ability to produce auxin and siderophore together are good applicants for phytoremediation of heavy metals contamination.…”

Section: Siderophoresmentioning

confidence: 99%

“…Moreover, environmental factors as intensity of light and water deficiency may affect the rate and composition of root exudates and this consequently may affect HCN production (Compant et al, 2005). HCN gas acts as biocontrol agent, it causes death to phytopathogen because it suppresses terminal movement of electrons in the respirational chain, ending oxidation process and inhibiting the energy supply to the organism (Pahari et al, 2020). HCN can chelate the excess microelements (e.g., Fe, Cr, Cu, Mn) in the soil leading to increase the availability of phosphorous for rhizobacteria and plant hosts.…”

Section: Antibiotic and Hydrogen Cyanide (Hcn)mentioning

confidence: 99%

“…Numerous researches illustrate that PGPR acts as biocontrol agent including Pseudomonas fluorescens LPK2 that inhibit wilt disease arises from Fusarium oxysporum by production of chitinase and gluconase, also Serratia marcescens produce chitinase which suppresses mycelial mass of Sclerotium rolfsii. PGPR also suppress growth of Phytophthora capsici and Rhizoctonia solani which are the most harmful plant pathogens over the world (Pahari et al, 2020).…”

Section: Lytic Enzymesmentioning

confidence: 99%

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Role of Plant Growth Promoting Rhizobacteria in Healthy and Sustainable Agriculture

et al. 2023

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Egyptian Journal of Botany http://ejbo.journals.ekb.eg/ 22 Review C ONVENTIONAL agriculture plays a vital role in meeting the increasing demands for food which result from the continuous rising of the human population. Nowadays farmers use more and more amounts of chemical fertilizers and pesticides which have a bad influence on soil quality, the ecosystem, and the health of humans. Hence, it is important to explore other approaches to decrease the application of chemical fertilizers and enhance crop productivity. Inoculation of the crop with plant growth promoting rhizobacteria (PGPR) to augment sustainable agriculture production is another strategy that is eco-friendly and could be carried out in the long run. PGPR is a group of bacteria able to colonize the root of plants and increase their growth and yield. They help in increasing water absorption, suppress pathogens, and also enhance the uptake of nutrients from soil. Biochemical applications by which rhizobacteria can stimulate the growth of plants were discussed in this article; (i) bio-stimulants: represented by particular phytohormones synthesized by PGPR for e.g. auxins or indole acetic acid (IAA), cytokinins, gibberellic acid (GA) and ethylene, (ii) biofertilization: through helping the uptake of many nutrients from the environment e.g. biological nitrogen fixation, phosphate solubilization and production of siderophore, (iii) bioprotectants or biocontrol: by preventing plant diseases through antibiotic, lytic enzymes and/or hydrogen cyanide (HCN) production.

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Section: Siderophoresmentioning

confidence: 99%

Section: Antibiotic and Hydrogen Cyanide (Hcn)mentioning

confidence: 99%

Section: Lytic Enzymesmentioning

confidence: 99%

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Role of Plant Growth Promoting Rhizobacteria in Healthy and Sustainable Agriculture

et al. 2023

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“…Rhizobacteria and its beneficial strains have improved productivity and agricultural yields by virtue of its mechanism and mode of action (Table 1). The rhizobacteria not only acts as a biocontrol agent, but also in sustained maintenance, protecting plants and most importantly elicit positive effect on field conditions that were affected by stress conditions (8,71).…”

Section: Pgpr-the Benefitting Technology Future Aspects and Scopesmentioning

confidence: 99%

Stress mitigation strategies of plant growth-promoting rhizobacteria: Plant growth-promoting rhizobacteria mechanisms

et al. 2022

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One of the major challenges that the world is facing currently is the inadequate amount of food production with high nutrient content in accordance with the increase in population size. Moreover, availability of cultivable area with fertile soil is reducing day by day owing to ever increasing population. Further, water scarcity and expensive agricultural equipment have led to the use of agrochemicals and untreated water. Excessive use of chemical fertilizers to increase crop yield have resulted in deleterious effects on the environment, health and economy, which can be overcome to a great extent by employing biological fertilizers. There are various microbes that grows in the rhizospheric region of plants known as plant growth-promoting rhizobacteria (PGPR). PGPR act by direct and indirect modes to stimulate plant growth and improve stress reduction in plants. PGPRs are used for potential agriculture practices having a wide range of benefits like increase in nutrients content, healthy growth of crops, production of phytohormones, prevention from heavy metal stress conditions and increase in crop yield. This review reports recent studies in crop improvement strategies using PGPR and describes the mechanisms involved. The potential mechanisms of PGPR and its allies pave the way for sustainable development towards agriculture and commercialization of potential bacteria.

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“…It has also been observed that both phosphate solubilization and phosphate mineralization may coexist in the same bacterial strain (Tao et al, 2008). Besides, phosphate solubilizing PGPR as soil inoculatesare reported to accelerate the natural resistance of the host plant against phytopathogens because they can release several compounds that supress the growth of the fungal and bacterial pathogens (Pahari et al, 2020) and consequently enhance the plant growth and development.…”

Section: Bacteria (Psb) Promoting Phosphorus Availabilitymentioning

confidence: 99%

Functioning of Plant Growth Promoting Rhizobacteria (Pgpr) and Their Mode of Actions: An Overview From Chemistry Point of View

Sukul¹,

Kumar²,

Rani³

et al. 2021

PLANT ARCHIVES

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In one stage of mankind's struggle to keep pace with ever increasing demand of food due to accelerating world population, chemical fertilizers contributed enormously to produce sufficient food products. However, a stagnation in the crop productivity along with decreasing soil fertility status and environmental pollution due to continuous, excessive, and imbalanced use of chemical fertilizers. In this scenario, plant growth promoting rhizobacteria (PGPR) become a natural choice as an alternative to the fertilizer to alleviate excessive consumption of fertilizers because PGPR not only promote nutrient availability to plants as biofertilizers but also performin several ways to stimulate plant growth and hence their productivity. In this review, an attempt has been made to highlight the main activities of PGPR in soil and plants, and to analyse their mode of actions from chemistry point of view.

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Plant Growth Promoting Rhizobacteria (Pgpr): Prospects and Application

Cited by 4 publications

References 0 publications

Role of Plant Growth Promoting Rhizobacteria in Healthy and Sustainable Agriculture

Role of Plant Growth Promoting Rhizobacteria in Healthy and Sustainable Agriculture

Stress mitigation strategies of plant growth-promoting rhizobacteria: Plant growth-promoting rhizobacteria mechanisms

Functioning of Plant Growth Promoting Rhizobacteria (Pgpr) and Their Mode of Actions: An Overview From Chemistry Point of View

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