Role of Microorganisms as Biofertilizers

Mushtaq, Zeenat; Faizan, Shahla; Hussain, Alisha

doi:10.1007/978-3-030-48771-3_6

Cited by 10 publications

(11 citation statements)

References 67 publications

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“…Biofertilizers are living microorganisms that increase the growth and also the development of plants by amassing the accessibility of mineral nutrients, solubilizing phosphorus, and production of phytohormones (Mushtaq et al, 2021). The production of plant growth regulators by microorganisms delivers several benefits to the host plant with the facilitation of root system expansion, which increases the absorption of water and nutrients and improves plant survival (Verma et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Plant Growth-Promoting Activity of Bacillus sp. PG-8 Isolated From Fermented Panchagavya and Its Effect on the Growth of Arachis hypogea

et al. 2022

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A natural bacterial isolate that shows multiple plant growth-promoting activities was isolated from fermented panchagavya (a mixture of five indigenous cow products). It is a gram-positive, endospore-forming bacteria identified as Bacillus sp. PG-8 by 16S rRNA gene sequencing. The Bacillus sp. PG-8 have shown multiple plant growth-promoting activities as indole acetic acid (2.78 μg/ml), gibberellic acid (0.7 mg/ml), ammonia (6.51 μmol/ml), exopolysaccharide (2.6% w/v) production, and phosphate solubilization (198.27 μg/ml). The Bacillus sp. PG-8 has ability to survive under the abiotic stress conditions such as temperature (28–46°C), pH (5.0–12.0), salt (0.5–20.0% w/v NaCl), and osmotic resistance (1–10% w/v PEG-6000). Due to its diverse characteristics, the effect of Bacillus sp. PG-8 was tested on Arachis hypogea (groundnut). The seeds treated with Bacillus sp. PG-8 demonstrated a 70% germination rate with seedling vigor indexes of 154. In pot study, Arachis hypogea growth showed 1.38, 1.38, 1.32, 1.39, and 1.52 times increase in root hair number, leaf numbers, leaf width, leaf length, and leaf area, respectively. The addition of Bacillus sp. PG-8 culture to the Arachis hypogea plant resulted in a significant improvement in plant growth. Bacillus sp. PG-8 is a spore producer with stress tolerance and multiple plant growth-promoting properties, which makes it a potential liquid biofertilizer candidate.

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Section: Introductionmentioning

confidence: 99%

Plant Growth-Promoting Activity of Bacillus sp. PG-8 Isolated From Fermented Panchagavya and Its Effect on the Growth of Arachis hypogea

et al. 2022

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“…He et al (2020) observed that some wheatlinked microbes, primarily the microbes of rhizospheric soil, produce SP and other metabolites, which increase the solubility of Fe in the soil. The current scenario may imply that an increase in physiological traits might be due to increased phosphorus solubilization, solubilization/uptake/translocation of iron, auxin and phytohormone production (Yavarian et al, 2021;Etesami, 2020;Mushtaq et al, 2021;Delaporte-Quintana et al, 2020). The addition of plant growth regulators (PGRs) to plant growth-promoting rhizosphere bacteria (PGPRs) showed improvements in chlorophyll content, leaf area, sugar content, oxidative stress, and reduction in peroxidation of lipids .…”

Section: Resultsmentioning

confidence: 99%

“…Maximum grain count/spike was found in SB8 (75.6), followed by SB6 (74.6) and SB7 (74.5). Mushtaq et al (2021) reported that microbes promoted nutrients concentration, plant physiological processes, plant development, yield and growth using various (direct or indirect) methods such as hormonal production, including (cytokinin, gibberellins, and auxin IAA). Similar findings were reported by (Ehsan et al, 2022).…”

Section: Resultsmentioning

confidence: 99%

Effect of Fluorescent-Producing Rhizobacteria on Cereal Growth Through Siderophore Exertion

Ehsan

Qureshi

Chaudhary

et al. 2023

joarps

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Despite soil having an abundance of iron (Fe), it is unavailable for proper plant growth and development. One of the mechanisms plants use to deal with iron deficiency is the uptake of iron by chelating phytosiderophores. Pseudomonas fluorescence can produce pyoverdine-type siderophore and has potential application in agriculture as an iron chelator. Therefore, bacterial isolates collected from different areas of district Faisalabad were screened for their fluorescent, siderophore production and indole acetic acid equivalents. After selecting efficient strains from a screening test, they were evaluated for improving wheat and maize production under field conditions. The results showed that out of 15 isolates, 7 were found to have significant plant-beneficial microbial traits. Efficient strains promoted grain yield by 24.2% and 20.2%, plant height by 30.9% and 23.7%, total grain weight by 25.3% and 13.4% over control in wheat and maize, respectively. Similarly, significant improvements in the number of grains per cob/spike were also observed. Analyses of grain iron contents depicted 67% increase as compared to control in for maize. Therefore, based on the results, it is concluded that bio-fortification of cereal crops through fluorescent producing siderophoric microbes is an effective strategy favorable for plant growth and development through nutrient solubilization/mobilization.

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“…At present, uses of chemical fertilizers, pesticides, herbicides, etc. reduce the soil fertility and effectiveness of soil (Mushtaq et al, 2021). Thus, the use of chemical fertilizer produces a great concern in agriculture in near future.…”

Section: Introductionmentioning

confidence: 99%

Applications of Plant Growth Promoting Bacteria (PGPB) and Vesicular Arbuscular Mycorrhizal (VAM) Fungi on Aloe barbadensis Mill., a Medicinally Important Succulent Herb

Dey,

Choudhury,

Mukherjee

et al. 2023

ASD

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Background: Application of biofertilizers is an appropriate replacement of harmful chemical fertilizers to fulfil the rising demands of herbal medicine. The main objective of this study was to establish a potent biofertilizer with the help of microbial consortia and observe their effects on the primary growth of Aloe barbadensis Mill. Methods: Rhizospheric soil of the plant Aloe barbadensis Mill. was taken and isolation, characterization and identification of the vesicular arbuscular mycorrhiza (VAM) fungi, rhizospheric bacteria and the VAM fungal spore associated bacteria was done. To check the microbial effects on morphological parameters of the plant, a total number of eight experimental sets were prepared by using different microbial strains. Result: In our experiment, VAM+ABM1 treated plant set showed the significant responses in plant primary growth which can be used as a potent biofertilizer in more sustainable way.

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Role of Microorganisms as Biofertilizers

Cited by 10 publications

References 67 publications

Plant Growth-Promoting Activity of Bacillus sp. PG-8 Isolated From Fermented Panchagavya and Its Effect on the Growth of Arachis hypogea

Plant Growth-Promoting Activity of Bacillus sp. PG-8 Isolated From Fermented Panchagavya and Its Effect on the Growth of Arachis hypogea

Effect of Fluorescent-Producing Rhizobacteria on Cereal Growth Through Siderophore Exertion

Applications of Plant Growth Promoting Bacteria (PGPB) and Vesicular Arbuscular Mycorrhizal (VAM) Fungi on Aloe barbadensis Mill., a Medicinally Important Succulent Herb

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