Phytoremediation potential of rhizobacterial isolates from Kans grass (Saccharum spontaneum) of fly ash ponds

Mukherjee, Pritam; Roychowdhury, Roopali; Roy, Madhumita

doi:10.1007/s10098-017-1336-y

Cited by 34 publications

(11 citation statements)

References 44 publications

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“…Isolates showing mucoid phenotypes were finally selected and purified. After morphological study, the isolates were finally identified by 16S rRNA gene analysis using universal PCR primers 27F and 1492R as mentioned by Mukherjee et al (2017). The amplified products were sequenced according to the manufacturer's specifications for Taq DNA polymerase-initiated cycle sequencing reactions using fluorescently labeled dideoxynucleotide terminators with an ABI PRISM 377 automated sequencer (Perkin-Elmer Applied Biosystems).…”

Section: Methodsmentioning

confidence: 99%

“…Finally, the kinetics of Ca 3 (PO 4 ) 2 solubilization mediated by each of the isolates were monitored in liquid NBRIP medium at five time-points (0, 4, 8, 12, and 16 days). Soluble Pi concentration in the medium was estimated spectrophotometrically by using the molybdenum blue method (Mukherjee et al, 2017) and the decrease in pH values over time (because of organic acid production) was also recorded.…”

Section: Methodsmentioning

confidence: 99%

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Halomonas Rhizobacteria of Avicennia marina of Indian Sundarbans Promote Rice Growth Under Saline and Heavy Metal Stresses Through Exopolysaccharide Production

2019

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The Halomonas species isolated from the rhizosphere of the true mangrove Avicennia marina of Indian Sundarbans showed enhanced rice growth promotion under combined stress of salt and arsenic in pot assay. Interestingly, under abiotic stress conditions, Halomonas sp. Exo1 was observed as an efficient producer of exopolysaccharide. The study revealed that salt triggered exopolysaccharide production, which in turn, increased osmotic tolerance of the strain. Again, like salt, presence of arsenic also caused increased exopolysaccharide production that in turn sequestered arsenic showing a positive feedback mechanism. To understand the role of exopolysaccharide in salt and arsenic biosorption, purified exopolysaccharide mediated salt and arsenic sequestration were studied both under in vivo and in vitro conditions and the substrate binding properties were characterized through FT-IR and SEM-EDX analyses. Finally, observation of enhanced plant growth in pot assay in the presence of the strain and pure exopolysaccharide separately, confirmed direct role of exopolysaccharide in plant growth promotion.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Halomonas Rhizobacteria of Avicennia marina of Indian Sundarbans Promote Rice Growth Under Saline and Heavy Metal Stresses Through Exopolysaccharide Production

2019

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“…Siderophore production by microorganisms is well documented (Cabaj and Kosakowska, 2009;Peek et al 2012;Lehner et al 2013) and studies have focused mainly on Staphylococcus sp. due to its clinical importance (Dale et al 2004;Mukherjee et al 2017). Halophiles and alkaliphiles, such as Bacillus sp.…”

Section: Siderophore Productionmentioning

confidence: 99%

Bioprospecting of haloalkaliphilic microorganisms isolated from a dried-out maar in the volcano “Hoya Rincón de Parangueo”

Gómez-Acata

Ayala-Gámez

García-Covarrubias

et al. 2021

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Halophiles can be found in hypersaline environments and they can synthesize products of industrial interest. Method: In this work, 37 bacterial strains were isolated from the sediment of a dried-out maar of the “Hoya Rincón de Parangueo” (Mexico) on different culture media with 20% NaCl and pH 9, while potential industrial extracellular enzymes were determined. Results: Eight genera Salsuginibacillus, Alkalibacillus, Bacillus, Staphylococcus, Oceanobacillus, Halomonas and Nesterenkonia besides 15 distinct species belonging to Actinobacteria, Firmicutes and Proteobacteria were identified. The L371, LTA7 and SU3 isolates produced proteases, M20, L5, L7, L8, Y1, Y2, M3, M9 and RA lipases, LTA4 and SU3 amylases, while LTA7, Y2, M5, M9 and RA caseinases with enzymatic activity at pH 9. Production of siderophore was found in 17 isolates. Discussion or Conclusion: It is reported for the first experimental evidence of siderophores production by N. alba, Alkalibacillus and Oceanobacillus at 6% NaCl (w/v). Isolates RE, RG1, RG2, RH1, RA and I11 showed 2.8% to 4.1% genetic distance with Nesterenkonia species and might represent new species.

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“…and Bacillus sp. are predominantly present in FA dumps that are tolerant to heavy metals (Kumar et al, 2009;Kumari & Singh, 2011;Mukherjee et al, 2017;Raja & Omine, 2013;Tiwari et al, 2008). PGPR efficiently enhances the yield and growth of plants by N fixation and accelerated growth hormone generation, that is, indole-3-acetic acid (IAA) that improves the availability of plant nutrients by producing siderophore and solubilising phosphate.…”

Section: Bacteria-mediated Remediation Of Fa Dumpsmentioning

confidence: 99%

Ecological restoration of fly‐ash disposal areas: Challenges and opportunities

2021

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Fly-ash (FA) is a by-product or residue that is produced during the combustion of coal for energy production in thermal power plants. The huge amount of FA generation is a global problem; and coal power generators still can find no safe and sustainable approach to FA disposal. FA dumps not only create air, water, and soil pollution but also pose a noxious impact on human health by introducing toxins in the food chain through biomagnification. A non-food vegetation cover can help to mitigate FA dump-related environmental health issues. However, alkaline pH, toxic metals, lack of soil microbes, and pozzolanic properties of FA limit plant growth. In this regard, ecological restoration of FA dumps through phytoremediation should be a holistic approach. This review focuses on the role of naturally occurring plants, tree plantation, and microbial inoculation in the ecological restoration of FA dumps and their role in the physicochemical changes of FA substrate. Application of organic material has been proved to help establish vegetation cover on FA dumps as they provide essential nutrients for plant and microbial growth. Morphological, physiological, and antioxidant responses of plants grown on FA dumps are also discussed in this study in detail. Overall, this review summarises the different comprehensive approaches of FA dump restoration and compiles ways to convert barren FA dumps into useful sites for deriving bioeconomy with phytoproducts. The outcomes of this study should be beneficial helping identify site-specific ecorestoration of FA dumps through an integrated approach.

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Phytoremediation potential of rhizobacterial isolates from Kans grass (Saccharum spontaneum) of fly ash ponds

Cited by 34 publications

References 44 publications

Halomonas Rhizobacteria of Avicennia marina of Indian Sundarbans Promote Rice Growth Under Saline and Heavy Metal Stresses Through Exopolysaccharide Production

Halomonas Rhizobacteria of Avicennia marina of Indian Sundarbans Promote Rice Growth Under Saline and Heavy Metal Stresses Through Exopolysaccharide Production

Bioprospecting of haloalkaliphilic microorganisms isolated from a dried-out maar in the volcano “Hoya Rincón de Parangueo”

Ecological restoration of fly‐ash disposal areas: Challenges and opportunities

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