Production of indole acetic acid by a novel bacterial strain of Planomicrobium chinense isolated from diesel oil contaminated site and its impact on the growth of Vigna radiata

Das, Reena; Tiwary, Bhupendra N.

doi:10.1016/j.ejsobi.2014.02.012

Cited by 14 publications

(8 citation statements)

References 36 publications

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“…For example, some plant-associated bacteria can produce biosurfactants that can enhance the bioavailability of hydrocarbons and may be useful for phytoremediation applications (Pacwa-Płociniczak et al 2011). These microorganisms can secrete plant hormones and promote the absorption of nutrients in the soil, which not only directly stimulates plant growth but also improves the adaptation of plants to drought, salinity, and toxicity of metals and organic pollutants (Das and Tiwary 2014). Taken together, the synergistic effects between plants and their associated microorganisms is a feasible “clean up” technology in the removal of hydrocarbon pollutants for the remediation of contaminated soils (Gaskin and Bentham 2010).…”

Section: Discussionmentioning

confidence: 99%

Combination of biochar amendment and phytoremediation for hydrocarbon removal in petroleum-contaminated soil

Han

Zhao

Bartlam

et al. 2016

Environ Sci Pollut Res

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Remediation of soils contaminated with petroleum is a challenging task. Four different bioremediation strategies, including natural attenuation, biochar amendment, phytoremediation with ryegrass, and a combination of biochar and ryegrass, were investigated with greenhouse pot experiments over a 90-day period. The results showed that planting ryegrass in soil can significantly improve the removal rate of total petroleum hydrocarbons (TPHs) and the number of microorganisms. Within TPHs, the removal rate of total n-alkanes (45.83 %) was higher than that of polycyclic aromatic hydrocarbons (30.34 %). The amendment of biochar did not result in significant improvement of TPH removal. In contrast, it showed a clear negative impact on the growth of ryegrass and the removal of TPHs by ryegrass. The removal rate of TPHs was significantly lower after the amendment of biochar. The results indicated that planting ryegrass is an effective remediation strategy, while the amendment of biochar may not be suitable for the phytoremediation of soil contaminated with petroleum hydrocarbons.

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Section: Discussionmentioning

confidence: 99%

Combination of biochar amendment and phytoremediation for hydrocarbon removal in petroleum-contaminated soil

Han

Zhao

Bartlam

et al. 2016

Environ Sci Pollut Res

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“…V. radiata was selected to determine the effect of degraded metabolites of chicken feather. Being an important pulse crop of Fabaceae family (Silva et al 2013), V. radiata is grown in many tropical and subtropical countries for beneficial health effects (Das and Tiwary 2014). The seeds were selected owing to its short germination time and ease of handling.…”

Section: Discussionmentioning

confidence: 99%

“…Briefly, 30-ml test tube containing 10 ml NBRI-BPB medium and different concentrations of sterilized feather lysate (0.25-2.0 %) were inoculated with 1 ml of bacterial suspension and incubated at 32 °C for 3 days in a shaking incubator at 120 rpm. The cultures were centrifuged at 10,000 rpm for 10 min, and soluble phosphate in culture supernatant was estimated at 882 nm using UV-Vis spectrophotometer (Das and Tiwary 2014).…”

Section: Phosphate Solubilization Activity Of Bacterial Strain and Inmentioning

confidence: 99%

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Ameliorating effects of chicken feathers in plant growth promotion activity by a keratinolytic strain of Bacillus subtilis PF1

Bhange

Chaturvedi

Bhatt

2016

Bioresour. Bioprocess.

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Background: Feathers are the major byproducts of poultry industry and considered as waste. Feathers (composed of protein keratin) are metabolized by a number of microorganisms as a source of carbon and nitrogen. Degradation of feathers results in production of amino acids and peptides, which can be employed as precursors for plant growthpromoting metabolites such as indole acetic acid, ammonia and HCN. The aim of the present investigation was to assess the influence of these metabolites (termed as feather protein hydrolysate) on plant growth promotion activity of keratinolytic bacterial strain Bacillus subtilis PF1.Results: Strain PF1 exhibits potent keratinolytic activity and can efficiently degrade 10 g/l chicken feathers under submerged cultivation with 81.4 ± 4.40 U/ml keratinase activity. Different concentrations of feathers supported the production of indole acetic acid by strain PF1. Strain PF1 produces maximum indole acetic acid (46.2 ± 0.21 µg/ml) in the presence of 2.0 % feathers at 120 h of incubation. The indole acetic acid production was confirmed by thin-layer chromatography and Fourier transform infrared spectroscopic analysis. However, increased concentration of feathers exhibited negative effect on phosphate solubilization due to increased alkalinity. HCN production also exhibited positive correlation with concentration of feathers. Finally, plant growth of Vigna radiata in the presence of strain PF1 with chicken feathers in soil was investigated, which showed good plant growth promotion activity. Increased ratio of C/N in soil also supported the plant growth promotion activity of feathers. Conclusion:Feather degradation property of B. subtilis PF1 could be efficiently utilized for feather waste management. The metabolites released by feather degradation along with strain PF1 could be successfully employed as an economic source of nitrogen fertilizers for plants.

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“…Indole-3-acetic acid belongs to the most commonly produced and the most active auxins (Mohite, 2013;Das and Tiwary, 2014), and its production has been monitored in a great range of phototrophic, heterotrophic, pathogenic, and symbiotic microorganisms, including non-rhizosphere microorganisms (Ahemad and Kibret, 2014).…”

Section: Introductionmentioning

confidence: 99%

Effect of auxins on the native proteolytic activity of forest soils

Holík

Vranová

Rejšek

2019

J. Plant Nutr. Soil Sci.

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The soil proteolytic complex plays an important role within mineral nutrient cycling in ecosystems. Both auxins and proteases are produced by soil microbiota, and reciprocally, their activities affect the metabolic role of biota in soil. The objective of this study was to find out whether auxins (indole‐3‐acetic acid, indole‐3‐butyric acid, 1‐naphthaleneacetic acid and 2‐naphthoxyacetic acid) have a stimulatory or inhibitory effect on the activity of native proteases in soil. The results presented here demonstrate the positive effect of auxins on the native proteolytic forest soil activity. For example, in organic Oe horizons synthetically produced auxins stimulated native proteolytic activity in the European beech stands, where NOA led to the highest increase in L‐tyrosine production (from 564.02 µg at 0 µg auxin to 645.19 µg at the auxin dose of 100 µg). Comparing organic and organomineral horizons, auxins promote a higher stimulation of protease activity in the organic horizons. Comparing the different forest stands, auxins promote a high stimulation of protease activity in European beech stands. In the organomineral soil horizons, auxins promote a high stimulation of protease activity in Leptosols in European beech stands and Cambisols in pedunculate oak stands. The results confirmed the interrelationships between auxins and the native proteolytic forest soil activity from the viewpoint of dead organic matter decomposition. Furthermore, the general importance of substances produced in the rhizosphere for nitrogen cycling was verified.

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Production of indole acetic acid by a novel bacterial strain of Planomicrobium chinense isolated from diesel oil contaminated site and its impact on the growth of Vigna radiata

Cited by 14 publications

References 36 publications

Combination of biochar amendment and phytoremediation for hydrocarbon removal in petroleum-contaminated soil

Combination of biochar amendment and phytoremediation for hydrocarbon removal in petroleum-contaminated soil

Ameliorating effects of chicken feathers in plant growth promotion activity by a keratinolytic strain of Bacillus subtilis PF1

Effect of auxins on the native proteolytic activity of forest soils

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