Impact of plant growth-promoting rhizobacteria (PGPR) on plant nutrition and root characteristics: Current perspective

Khoso, Muneer Ahmed; Wagan, Sindho; Alam, Intikhab; Hussain, Amjad; Ali, Qurban; Saha, Sudipta; Poudel, Tika Ram; Manghwar, Hakim; Liu, Fen

doi:10.1016/j.stress.2023.100341

Cited by 26 publications

(5 citation statements)

References 192 publications

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“…By altering the solubility and absorption of nutrients, PRs improve the bioavailability of nutrients in plants under abiotic factors. Through N 2 -fixation, mobilization, and the promotion of N 2 -fixers through their secretions, several rhizobacteria can reduce the volume of nitrogen (N 2 ) supplementation required for plant growth (Shah et al, 2022;Khoso et al, 2024). Additionally, they change the shape and surface area of the roots, improving nitrogen bioavailability (Olenska et al, 2020).…”

Section: Uptake and Accumulation Of Mineral Nutrients And Water Balancementioning

confidence: 99%

Regulatory mechanisms of plant rhizobacteria on plants to the adaptation of adverse agroclimatic variables

Verma,

Joshi,

Song

et al. 2024

Front. Plant Sci.

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The mutualistic plant rhizobacteria which improve plant development and productivity are known as plant growth-promoting rhizobacteria (PGPR). It is more significant due to their ability to help the plants in different ways. The main physiological responses, such as malondialdehyde, membrane stability index, relative leaf water content, photosynthetic leaf gas exchange, chlorophyll fluorescence efficiency of photosystem-II, and photosynthetic pigments are observed in plants during unfavorable environmental conditions. Plant rhizobacteria are one of the more crucial chemical messengers that mediate plant development in response to stressed conditions. The interaction of plant rhizobacteria with essential plant nutrition can enhance the agricultural sustainability of various plant genotypes or cultivars. Rhizobacterial inoculated plants induce biochemical variations resulting in increased stress resistance efficiency, defined as induced systemic resistance. Omic strategies revealed plant rhizobacteria inoculation caused the upregulation of stress-responsive genes—numerous recent approaches have been developed to protect plants from unfavorable environmental threats. The plant microbes and compounds they secrete constitute valuable biostimulants and play significant roles in regulating plant stress mechanisms. The present review summarized the recent developments in the functional characteristics and action mechanisms of plant rhizobacteria in sustaining the development and production of plants under unfavorable environmental conditions, with special attention on plant rhizobacteria-mediated physiological and molecular responses associated with stress-induced responses.

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Section: Uptake and Accumulation Of Mineral Nutrients And Water Balancementioning

confidence: 99%

Regulatory mechanisms of plant rhizobacteria on plants to the adaptation of adverse agroclimatic variables

Verma,

Joshi,

Song

et al. 2024

Front. Plant Sci.

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“…growth promoting substances such as IAA, siderophores, HCN, ammonia, exopolysaccharides, and phosphate solubilization, biocontrol potentials, ACC deaminase, antifungal activity, nitrogen fixation (Khoso et al 2024). The Pseudomonas led to increased crop growth, yield, and phosphorus uptake in a variety of crops.…”

Section: Many Scientists Have Reported Pseudomonasmentioning

confidence: 99%

Impact of Different Seed Priming Treatments on Seed Yield in Foxtail Millet

Balaji,

Arunkumar,

Venkatakrishnan

et al. 2024

Environment and Ecology

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The experiments were carried out both in the laboratory as well as in the field condition. Field experiments were conducted to determine the productivity of foxtail millet due to different seed priming treatments. Halo priming with KH2PO4 @ 2 %, CaCl2 @ 2%, osmo priming with Mannitol @ 2 %, PEG @ -15 Bars, bio priming with Pseudomonas fluorescens (LF) @ 15, Prosophis leaf extract @ 10 % with seed to solution ratio of 1:1 for the soaking duration of 8 h along with unprimed, Thiram @ 2g/kg and hydro primed seeds were evaluated for its productivity during kharif and rabi seasons. The results revealed that the crop performance with regard to growth parameters, physiological parameters, yield and yield attributing parameters was outperformed in halo-priming with 2% KH2PO4 for 8 hrs primed seeds during kharif season than rabi.

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“…Microorganisms and some plants have been found to undergo symbiotic association, for instance, mycorrhizal association, nitrogen-fixing bacteria (e.g., rhizobia), and plant growth-promoting rhizobacteria (PGPR). 163 Such a positive relationship may prove to be valuable in terms of the tolerance level of Pb as such an association could facilitate nutrient acquisition, stress mitigation, and growth promotion. The mycorrhizal fungi could increase the tolerance capacity of Pb in plants, by enhancing the uptake of nutrients, plant antioxidant defenses, and modulating levels of plant hormone.…”

Section: Influence Of Plant-microbe Interactions On Pb Tolerancementioning

confidence: 99%

“…The mycorrhizal fungi could increase the tolerance capacity of Pb in plants, by enhancing the uptake of nutrients, plant antioxidant defenses, and modulating levels of plant hormone. 163 The N 2 -fixing bacteria could improve the Pb-induced stress in plants by promoting the growth of plants, improving nutrient availability, and stimulating systematic resistance against plant pathogens. 164 , 165 More investigations are required for a better understanding of the phenomenon involved in the symbiotic relationships and their effect on the tolerance of Pb by the plant.…”

Section: Influence Of Plant-microbe Interactions On Pb Tolerancementioning

confidence: 99%

Lead toxicity in plants: mechanistic insights into toxicity, physiological responses of plants and mitigation strategies

Gupta,

Dwivedi,

Kumar

et al. 2024

Plant Signaling & Behavior

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Impact of plant growth-promoting rhizobacteria (PGPR) on plant nutrition and root characteristics: Current perspective

Cited by 26 publications

References 192 publications

Regulatory mechanisms of plant rhizobacteria on plants to the adaptation of adverse agroclimatic variables

Regulatory mechanisms of plant rhizobacteria on plants to the adaptation of adverse agroclimatic variables

Impact of Different Seed Priming Treatments on Seed Yield in Foxtail Millet

Lead toxicity in plants: mechanistic insights into toxicity, physiological responses of plants and mitigation strategies

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