PGPR: present role, mechanism of action and future prospects along bottlenecks in commercialization

Mushtaq, Zain

doi:10.6092/issn.2281-4485/11103

Cited by 9 publications

(5 citation statements)

References 26 publications

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“…The mechanism of PGPR microbial action in stimulating plant growth involves the availability of nutrients derived from genetic processes [47], such as biological nitrogen fixation and phosphate dissolution, coping with plant stress through modulation of ACC deaminase expression, and production of phytohormones and siderophores [48,49]. Soil microorganisms that produce the enzyme 1-aminocyclopropane-1-carboxylate (ACC) deaminase promote plant growth by removing and breaking down plant-produced ACC, thereby lowering plant ethylene levels [50].…”

Section: Discussionmentioning

confidence: 99%

Enhancing Potato Crop cv. Granola Kembang – G2 Resilience Agaist Phytophthora infestans with Bamboo Rhizobacteria

Roeswitawati,

Husen,

Anwar

et al. 2024

BIO Web Conf.

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This study aimed to assess the ability of bacteria living in bamboo roots to suppress the pathogen Phytophthora infestans in Solanum tuberosum L. cv. Granola Kembang—G2. The research was conducted in Pujon Village, Malang Regency, East Java, from March to June 2022, using a factorial experiment arranged at random groups. The first factor is Plant Grow Promoting Rhizobacteria (PGPR), i.e. P1, PGPR derived from bamboo (Bambusa vulgaris Schrad. ex J.C.Wendl) roots; and P2, PGPR from Biopharma. The second factor is the concentration of PGPR, namely 10 mg L–1 (C1), 20 mg L–1 (C2), and 30 mg L–1 (C3). There was no significant interaction between the PGPR source and the PGPR concentration treatment on the observed variables except tuber weight ha–1. The PGPR source did not show significant differences in the intensity of disease attacks, the number of tubers plant–1, and the percentage of tuber damage. PGPR concentrations showed significant differences in these three variables. The concentration of PGPR, which effectively and efficiently suppresses disease, is 20 mg L–1 (C2), which is suitable for potato tuber production is 30 mg L–1 (C3).

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Section: Discussionmentioning

confidence: 99%

Enhancing Potato Crop cv. Granola Kembang – G2 Resilience Agaist Phytophthora infestans with Bamboo Rhizobacteria

Roeswitawati,

Husen,

Anwar

et al. 2024

BIO Web Conf.

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“…A certain population density at the colonization region on the host plant must be attained by the inoculants for effective response. However, root colonization is unaffected by the PGPR’s crop specificity ( Mcnear, 2013 ; Mushtaq, 2020 ). Other factors having a significant impact on the viability and root colonization of PGPM are environment parameters such soil type, temperature, moisture, and the prevalence of other competing rhizo-microbiota, which differ depending on the crops and the field type.…”

Section: Constraints and Future Trendsmentioning

confidence: 99%

Plant growth-promoting rhizobacteria: Salt stress alleviators to improve crop productivity for sustainable agriculture development

et al. 2023

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Soil salinity, a growing issue worldwide, is a detrimental consequence of the ever-changing climate, which has highlighted and worsened the conditions associated with damaged soil quality, reduced agricultural production, and decreasing land areas, thus resulting in an unsteady national economy. In this review, halo-tolerant plant growth-promoting rhizo-microbiomes (PGPRs) are evaluated in the salinity-affected agriculture as they serve as excellent agents in controlling various biotic–abiotic stresses and help in the augmentation of crop productivity. Integrated efforts of these effective microbes lighten the load of agro-chemicals on the environment while managing nutrient availability. PGPR-assisted modern agriculture practices have emerged as a green strategy to benefit sustainable farming without compromising the crop yield under salinity as well as salinity-affected supplementary stresses including increased temperature, drought, salinity, and potential invasive plant pathogenicity. PGPRs as bio-inoculants impart induced systemic tolerance (IST) to plants by the production of volatile organic compounds (VOCs), antioxidants, osmolytes, extracellular polymeric substances (EPS), phytohormones, and ACC-deaminase and recuperation of nutritional status and ionic homeostasis. Regulation of PGPR-induced signaling pathways such as MAPK and CDPK assists in salinity stress alleviation. The “Next Gen Agriculture” consists of the application of designer crop microbiomes through gene editing tools, for instance, CRISPR, and engineering of the metabolic pathways of the microbes so as to gain maximum plant resistance. The utilization of omics technologies over the traditional approaches can fulfill the criteria required to increase crop yields in a sustainable manner for feeding the burgeoning population and augment plant adaptability under climate change conditions, ultimately leading to improved vitality. Furthermore, constraints such as the crop specificity issue of PGPR, lack of acceptance by farmers, and legal regulatory aspects have been acknowledged while also discussing the future trends for product commercialization with the view of the changing climate.

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“…Many PGPR enhance plant drought tolerance through mechanisms such as higher photosynthetic efficiency [27], increased production of antioxidant enzymes, and non-enzymatic antioxidants [28]. One critical trait of these bacteria is the enzyme 1-aminocyclopropane-1-carboxylate (ACC) deaminase [29], which supports plant growth under stress by preventing ethylene accumulation, which otherwise inhibits growth [30,31].…”

Section: Introductionmentioning

confidence: 99%

Use of Biofertilizers as an Effective Management Strategy to Improve the Photosynthetic Apparatus, Yield, and Tolerance to Drought Stress of Drip-Irrigated Wheat in Semi-Arid Environments

Ikan,

Soussani,

Ouhaddou

et al. 2024

Agronomy

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Irrigation scheduling, coupled with the use of biofertilizers, constitutes an effective management strategy to overcome soil drought. This study aimed to assess the individual and combined effects of three selected biofertilizers—(R) Bacillus sp. and Bacillus subtilis, (M) native arbuscular mycorrhizal fungi, and (C) compost—on Triticum durum L. The agro-physiological and biochemical traits, along with the soil properties, were evaluated under two different water regimes, 100% crop evapotranspiration (ETc) for the well-watered regime and 30% ETc for the drought-stressed regime under field conditions, using a drip irrigation system. Drought stress (DS) led to significant reductions in the biomass, physiological parameters, and biochemical markers. Furthermore, the application of CM and MR significantly boosted the shoot and root dry weight by 137% and 72%, respectively, under DS compared to the control. Moreover, CM and R resulted in a notable increase of 167% and 130% in the grain and straw yield, respectively, under the same conditions. The normalized difference vegetation index showed improved values in the plants inoculated with MR and CMR, respectively, under DS conditions. Additionally, the soil quality was positively influenced by the application of M and/or R and/or C biofertilizers. These findings provide valuable insights into the intricate soil–plant interactions and the beneficial effects of combined biofertilizers in enhancing wheat’s resilience to drought stress.

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PGPR: present role, mechanism of action and future prospects along bottlenecks in commercialization

Cited by 9 publications

References 26 publications

Enhancing Potato Crop cv. Granola Kembang – G2 Resilience Agaist Phytophthora infestans with Bamboo Rhizobacteria

Enhancing Potato Crop cv. Granola Kembang – G2 Resilience Agaist Phytophthora infestans with Bamboo Rhizobacteria

Plant growth-promoting rhizobacteria: Salt stress alleviators to improve crop productivity for sustainable agriculture development

Use of Biofertilizers as an Effective Management Strategy to Improve the Photosynthetic Apparatus, Yield, and Tolerance to Drought Stress of Drip-Irrigated Wheat in Semi-Arid Environments

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