Effect of PGPR and PSB on Soil Chemical Properties, Nutrient Status and Microbial Population Changes after Harvest of Irrigated Maize under Varying Levels of Phosphorus

Gulnaz, Yasmin; Fathima, P. S.; Kulmitra, Akhilesh Kumar; Ghosh, Amlan Kumar; Thejesha, A. G.

doi:10.20546/ijcmas.2017.610.206

Cited by 5 publications

(3 citation statements)

References 4 publications

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“…Previous studies demonstrated that application of PGPR improved the soil nutrient status (Gulnaz et al, 2017). BBS treatment affected the soil properties (Table 1).…”

Section: Resultsmentioning

confidence: 99%

Consortium of Plant Growth-Promoting Rhizobacteria Strains Suppresses Sweet Pepper Disease by Altering the Rhizosphere Microbiota

et al. 2019

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Beneficial microorganisms have been extensively used to make plants more resistant to abiotic and biotic stress. We previously identified a consortium of three plant growth-promoting rhizobacteria (PGPR) strains ( Bacillus cereus AR156, Bacillus subtilis SM21, and Serratia sp. XY21; hereafter “BBS”) as a promising and environmentally friendly biocontrol agent. In this study, the effect of BBS on a soil-borne disease of sweet pepper was evaluated. Application of BBS significantly reduced the prevalence of phytophthora blight and improved fruit quality and soil properties relative to the control. BBS was able to alter the soil bacterial community: it significantly increased the abundances of Burkholderia , Comamonas , and Ramlibacter , which were negatively associated with disease severity, relative to the control. A redundancy analysis suggested that BBS-treated soil samples were dominated by Burkholderia , Comamonas , Ramlibacter , Sporichthya , Achromobacter , and Pontibacter ; abundance of these genera was related to total organic carbon (TOC), total nitrogen (TN), ammonium nitrogen (AN), total potassium (TP), and available phosphorus (AP) contents. This suggests that BBS treatment shifted the microbe community to one that suppressed soil-borne disease and improved the soil chemical properties.

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“…Previous studies demonstrated that application of PGPR improved the soil nutrient status (Gulnaz et al, 2017). BBS treatment affected the soil properties (Table 1).…”

Section: Resultsmentioning

confidence: 99%

Consortium of Plant Growth-Promoting Rhizobacteria Strains Suppresses Sweet Pepper Disease by Altering the Rhizosphere Microbiota

et al. 2019

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“…These findings are in line with the literature. Yasmin et al [49] reported that PGPR coated phosphorus increased the cotton yield due to a greater number of monopodial branches and crop growth rate. Zahid et al [39] found increased total cotton bolls per plant −1 , leaf area index, net photosynthetic rate, and seed cotton where PGPR coated phosphorus was applied.…”

Section: Discussionmentioning

confidence: 99%

Mitigation of Osmotic Stress in Cotton for the Improvement in Growth and Yield through Inoculation of Rhizobacteria and Phosphate Solubilizing Bacteria Coated Diammonium Phosphate

et al. 2020

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Cotton (Gossypium hirsutum L.) is one of the major fiber crops. Its production is under threat due to scarcity of water resources under a changing climatic scenario. Limited water availability also decreases the uptake of phosphorus, and less uptake of phosphorus can deteriorate the quality attributes of cotton fiber. There is a need to introduce bio-organic amendments which can mitigate osmotic stress on a sustainable basis. Inoculation of rhizobacteria can play an imperative role in this regard. Rhizobacteria can not only improve the growth of roots but also enhance the availability of immobile phosphorus in soil. That is why the current experiment was conducted to explore and compare the efficacy of sole application of diammonium phosphate (DAP) over plant growth-promoting rhizobacteria (PGPR) and phosphorus solubilizing bacteria (PSB) coated DAP on growth and quality attributes of cotton under artificially induced osmotic stress at flowering stage. The impact of phosphorus levels was found to be significant on the plant height, leaf area, average boll weight, stomatal conductance, net photosynthetic rate, and seed cotton yield, while the irrigation effect was significant on all the parameters. The PGPR coated phosphorus performed better as compared to other treatments under normal irrigation and osmotic stress. Results showed that PGPR coated phosphorus increased by 29.47%, 21.01%, 41.11%, 32.73%, 15.63% and 22.89% plant height, average boll weight, stomatal conductance, net photosynthetic rate, fiber length, and seed cotton yield respectively. In conclusion, PGPR coated DAP can be helpful to get higher cotton productivity as compared to control and sole application of DAP under normal irrigation and osmotic stress.

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“…PGPRs have been shown to directly enhance plant growth by several mechanisms, including the fixation of atmospheric nitrogen transferred to the plant, the production of siderophores that chelate iron and make it available to the plant root, the solubilization of minerals like phosphorus, and the synthesis of phytohormones [3,4]. The potentiality of PGPR offers an attractive way to replace the use of chemical fertilizers, pesticides and other supplements to increase agriculture yield [5,6]. The different growth-promoting characteristics of the rhizobacteria identified in the rhizosphere of Raphanus sativus are discussed in the current work, as well as their morphological characterization, biochemical characterization and molecular characterization of the isolated strains.…”

Section: Introductionmentioning

confidence: 99%

Isolation and Characterization of Plant Growth Promoting Rhizobacteria form Raphanus sativus (Radish)

Yadav,

Singh

2023

IJPSS

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Rhizobacteria are present in rhizosphere region of plant root system, which enhance the plant growth by various way like biological nitrogen fixation, siderophore production, phosphate solubilization and phytohormone production. The soil samples were collected from rhizosphere region of Raphanus sativus, after enrichment rhizobacteria was isolated by serial dilution method, diluted sample were spread on respective solid agar media plates. Isolated rhizobacteria was identify by biochemical and molecular characterization methods. The isolated PGPRs was Bacillus subtilis which was showed phosphate solubilization activity and they were enhanced 30% more green gram seed germination. The method of current research is screening, isolation and biochemical characterization of rhizobacteria form rhizosphere region of Raphanus sativus. Phosphate solubilizing bacteria, solubilized the unavailable phosphate and provide to plant. The main purpose of this research paper is to widen the understanding of the role of phosphate solubilizing bacteria in crop production as biofertilizers.

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Effect of PGPR and PSB on Soil Chemical Properties, Nutrient Status and Microbial Population Changes after Harvest of Irrigated Maize under Varying Levels of Phosphorus

Cited by 5 publications

References 4 publications

Consortium of Plant Growth-Promoting Rhizobacteria Strains Suppresses Sweet Pepper Disease by Altering the Rhizosphere Microbiota

Consortium of Plant Growth-Promoting Rhizobacteria Strains Suppresses Sweet Pepper Disease by Altering the Rhizosphere Microbiota

Mitigation of Osmotic Stress in Cotton for the Improvement in Growth and Yield through Inoculation of Rhizobacteria and Phosphate Solubilizing Bacteria Coated Diammonium Phosphate

Isolation and Characterization of Plant Growth Promoting Rhizobacteria form Raphanus sativus (Radish)

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