Biodegradation of naphthalene and anthracene by chemo-tactically active rhizobacteria of populus deltoides

Bisht, Sandeep; Pandey, Piyush; Sood, Ankita; Sharma, Shivesh; Bisht, N. S.

doi:10.1590/s1517-83822010000400011

Cited by 55 publications

(22 citation statements)

References 30 publications

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“…The growth rate of the isolate was found to increase with increase of substrate concentration. This further confirmed that anthracene and naphthalene concentrations are significant in growth physiology of the isolates and may also act as limiting nutrients in rhizosphere [6]. However, in this study, the quantitative estimation of residual amount of PAH in culture medium showed that 78.44 % of anthracene was degraded by the isolate [15] have also reported the degradation of PAH in liquid and solid medium by Pseudomonas sp.…”

Section: Discussionsupporting

confidence: 77%

Deciphering Rhizosphere Soil System for Strains Having Plant Growth Promoting and Bioremediation Traits

Shukla¹,

Sharma²,

Singh³

et al. 2012

Agric Res

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The rhizosphere is an important region of microbial interactions where exudates released by plant roots are the main source of food for microorganisms, which play a vital role in increasing their population density and activities. An isolate of bacterium Pseudomonas sp., designated as KS51, that expressed plant growth-promoting traits and antagonistic activity was isolated from the rhizospheric soil of Calotropis sp., grown in the northern and central regions of India. The isolate was recognized as Gram negative rod (0.67 9 2.89 lm) shaped bacterium. It grew at optimum temperature ranging from 25 to 30°C, exhibited tolerance to a wide pH range of 6-10 and tolerated salt concentrations up to 5 % (wt/vol). Though, it was sensitive to chloramphenicol, ampicillin, tetracycline, gentamicin, ceftriaxone, and erythromycin, it showed resistance to co-trimoxazole, cefuroxime, ciprofloxacin, penicillin G, augmentin, fusidic acid and vancomycin. The bacterium was biochemically characterized and examined in vitro for their plant growth-promoting traits like production of indole acetic acid (IAA) (8 lg ml -1 day -1 ), hydrogen cyanide (HCN), siderophore and phosphate solubilization (268 lg ml -1 after 144 h). The mean growth rate constant (K) of isolate was found to increase with successive increments in substrate concentration of naphthalene and anthracene (0.5-1.0 mg/50 ml). KS51 was also found to be a good degrader for naphthalene (78.44 %) and anthracene (63.53 %) as determined by HPLC analysis. Based on the 16S rRNA analysis, KS51 showed the maximum similarity with Pseudomonas sp. On the basis of its growth-promoting, biocontrol and bioremediation potential properties, KS51 could be applied in biotechnological applications.

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Section: Discussionsupporting

confidence: 77%

Deciphering Rhizosphere Soil System for Strains Having Plant Growth Promoting and Bioremediation Traits

Shukla¹,

Sharma²,

Singh³

et al. 2012

Agric Res

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“…SBA4, Micrococcus varians SBA8, Deinococcus radiodurans SBA6 and Bacillus circulans SBA12 which have the ability to metabolize PAH and are chemotactically active against PAH (Bisht et al, 2010), were subjected for further rhizormediation studies. Among these four isolates, only one soil isolate M. varians SBA8 exhibited higher PGP and biocontrol activity, therefore, anthracene biodegradation studies was conducted with this bacterium only in PAH contaminated soil-model system.…”

Section: Resultsmentioning

confidence: 99%

“…However, this study tried to establish a perfect 'plant-microbe pair' for bioremediation of PAH in soil. Bisht et al (2010) found that soil isolates Kurthia sp. SBA4, M. varians SBA8, D. radiodurans SBA6 and B. circulans SBA12 have promising characteristics for rhizoremediation of PAH using P. deltoides rhizosphere system in soil.…”

Section: Discussionmentioning

confidence: 99%

“…In vitro plant growth promoting activities of PAH degrading soil isolates Four PAH degrading strains were isolated from the rhizosphere of P. deltoides growing in noncontaminated sites of Garhwal Himalayan regions (Bisht et al, 2010). These bacteria were further checked for plant growth promoting activities viz., indole-3-acetic acid (IAA) production, phosphate solubilization, siderophore, HCN (Hydrogen cyanic acid) and 1-Aminocyclopropane-1-carboxylate (ACC) deaminase production.…”

Section: Methodsmentioning

confidence: 99%

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Innoculant technology in Populus deltoides rhizosphere for effective bioremediation of Polyaromatic hydrocarbons (PAHs) in contaminated soil, Northern India

Bisht

Kumar

et al. 2014

Emir. J. Food Agric

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Four bacterial strains viz. Kurthia sp. SBA4, Micrococcus varians SBA8, Deinococcus radiodurans SBA6 and Bacillus circulans SBA12 identified as Polyaromatic hydrocarbons (PAH) degrader, isolated form the rhizospheric soil of Populus deltoides growing in non-contaminated sites of Uttarakhand Himalyan region, India. Out of these four isolates, M. varians SBA8 degraded appreciable amount of PAH along with some plant growth promoting properties viz. indole acetic acid (IAA) 19 µg ml -1 , phosphate solubilization 1.8 µg ml -1 , produced siderophore and possessed ACC deaminase activity. Along with these traits, M. varians SBA8 also exhibited biocontrol activities against phytopathogenic fungi Rhizoctonia solanii, Macrophomina phaseolina and Fusarium oxysporum with 50, 43.3 and 34.6 percent growth inhibition (PGI). Moreover, mycelial deformities were also observed in the test fungal spp. The M. varians SBA8 proved to be competent rhizobacteria in rhizosphere niche in treatments T 1 (Sterile soil + plant cuttings + bacterization) and T 2 (sterile soil + anthracene + plant cuttings + bacterization). Rhizoremediation potential of M. varians SBA8 was also determined in PAH amended soil model system. Significant enhancement in shoot, root length, root and shoot biomass including stem girth of P. deltoides with respect to control was recorded and concurrently the bacterium degraded 43.6 % of PAH as determined by HPLC analysis in soil model system after 120 days of inoculation. Multipurpose inoculant was also formulated using M. varians SBA8 strain immobilized in different lignocellulosic waste material used as carriers. Rock phosphate, cocoa peat and wheat bran based bioinoculant were found suitable for rhizoremediation of PAH.

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“…Also, microbes derive energy necessary to degrade contaminants from the catabolic degradation of contaminants themselves. Because of all these properties, microbes are used in situ to minimize disturbance of the pollutants from contaminated site (Juhasz et al, 1997 (Bisht et al, 2010). When a suitable rhizospheric strain is introduced together with a suitable plant, it settles on the root along with indigenous population, thereby enhancing the bioremediation process.…”

Section: Issn: 2319-7706 Volume 6 Number 4 (2017) Pp 2060-2079mentioning

confidence: 99%

Toluene Degrading Bacteria from the Rhizosphere of Solanum melongena Contaminated with Polycyclic Aromatic Hydrocarbon

Raghuvanshi¹,

Bhatt²,

Agrawal³

2017

Int.J.Curr.Microbiol.App.Sci

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Biodegradation of naphthalene and anthracene by chemo-tactically active rhizobacteria of populus deltoides

Cited by 55 publications

References 30 publications

Deciphering Rhizosphere Soil System for Strains Having Plant Growth Promoting and Bioremediation Traits

Deciphering Rhizosphere Soil System for Strains Having Plant Growth Promoting and Bioremediation Traits

Innoculant technology in Populus deltoides rhizosphere for effective bioremediation of Polyaromatic hydrocarbons (PAHs) in contaminated soil, Northern India

Toluene Degrading Bacteria from the Rhizosphere of Solanum melongena Contaminated with Polycyclic Aromatic Hydrocarbon

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