Trivalent Arsenic Tolerance and Accumulation in Two Facultative Marine Fungi

Vala, Anjana K.; Sutariya, Vishnu

doi:10.5812/jjm.3383

Cited by 27 publications

(14 citation statements)

References 19 publications

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“…about 30%). In agreement with our results, Vala (2010) and Vala and Sutariya (2012) observed that Rhizopus sp. and A. flavus exhibited similar patterns of accumulation when exposed to different arsenic concentrations (25 and 50 mg l À1 As (III) or As(V)).…”

Section: Resultssupporting

confidence: 93%

Bioaccumulation and biovolatilization of various elements using filamentous fungus Scopulariopsis brevicaulis

Boriová

Čerňanský

Matúš

et al. 2014

Lett Appl Microbiol

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Significance and Impact of the Study: Microbial accumulation and volatilization are natural processes involved in biogeochemical cycles of elements. Despite their impact on mobility, bioavailability and toxicity of various metal(loid)s, only few papers deal with these processes under aerobic conditions with microscopic fungi. Thus, the proving of ability of microscopic fungus Scopulariopsis brevicaulis to accumulate and transform metals and metalloids by methylation or alkylation and quantification of these processes were demonstrated. The results can provide basic information on natural elements cycling and background for more specific studies focusing, for example, on application of these processes in mitigation of metal(loid) contamination. Abstract Biovolatilization and bioaccumulation capabilities of different elements by microscopic filamentous fungus Scopulariopsis brevicaulis were observed. Accumulation of As(III), As

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Section: Resultssupporting

confidence: 93%

Bioaccumulation and biovolatilization of various elements using filamentous fungus Scopulariopsis brevicaulis

Boriová

Čerňanský

Matúš

et al. 2014

Lett Appl Microbiol

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“…This is in agreement with earlier studies with As (III) (Vala and Upadhyay, 2009). Increased biosorption of Pb (II) and Cu (II) ions on Aspergillus flavus biomass with increasing initial metal ion concentration was observed by Akar and Tunali (2006).…”

Section: Resultssupporting

confidence: 93%

“…on day 9. Compared with similar studies for As (Ⅲ) (Vala and Upadhyay, 2009), there is a slight reduction in biomass accumulation when exposed to As (V) at 50 mg L -1 in the present study. However, the inhibition effect is not so apparent as reported for Aspergillus niger (Dursun et al, 2003).…”

Section: Resultscontrasting

confidence: 84%

“…Almost similar results were reported by Visoottiviseth and Panviroj (2001) for Penicillium sp., where there was an increase in arsenate in fungal cells untill on day 8, followed by a decrease on day 10 and a subsequent rise on day 12. A slight decrease in accumulation on day 6 and an increase again on day 9 had been observed by Vala and Upadhyay (2009) also. Such behavior might be due to the efflux of As by the fungus and intake again by metabolic activities.…”

Section: Resultsmentioning

confidence: 67%

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An investigation on tolerance and accumulation of a facultative marine fungus Aspergillus flavus to pentavalent arsenic

Vala

Davariya

Upadhyay

2010

J. Ocean Univ. China

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Tolerance of a facultative marine fungus Aspergillus flavus towards As (V) was tested. Luxuriant growth of the test isolate was observed in culture media with As (V) concentrations of 25 mg L -1 and 50 mg L -1 , indicating its tolerance to the metal. Accumulation rate of arsenic was always higher when exposed to As (V) at 50 mg L -1 than at 25 mg L -1 . The study reveals Aspergillus flavus as a promising candidate for environmental bioremediation. Arsenic contents (mg g -1 ) in the fungus when exposed to 50 mg L -1 As (V) were measured as 11.1773, 4.0983, and 8.0000 mg g -1 on day 3, 6 and 9, respectively. The highest content was observed initially, i.e. on day 3, followed by a decline and a rise again. These results provide baseline information for further explorations regarding the exploitation of the fungus for arsenic removal.

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“…The reason is, from culturing to recovery processes, handling fungi is less complex than other microbes besides their unique traits such as greater potential to produce a number of enzymes, ability to accumulate various metals, and ability to grow under extreme conditions. Fungal isolates with noticeable metal removal efficiency have been screened out from marine habitats, [12][13][14] however, limited information is available on exploitation of marine-derived fungi for biosynthesis of metal nanoparticles, especially GNPs. [15][16][17] Advantages of harnessing Rhizopus oryzae as microbial nanofactory have been reported.…”

Section: Introductionmentioning

confidence: 99%

Intra- and Extracellular Biosynthesis of Gold Nanoparticles by a Marine-Derived Fungus Rhizopus oryzae

Vala

2014

Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-

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Gold nanoparticles (GNPs) production by the green chemistry approach was examined using a marine-derived fungus Rhizopus oryzae. The test fungi revealed production of gold nanoparticles both, extra and intracellularly. Extracellular biosynthesis was found at the gold chloride concentration 0.25 mM, as evidenced by lavender-purple color of the solution. At other concentrations, intense coloration in biomass was observed indicating intracellular biosynthesis of gold nanoparticles. To the best of the author's knowledge, this is first ever report on extracellular biosynthesis of GNPs by R. oryzae under static condition.

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Trivalent Arsenic Tolerance and Accumulation in Two Facultative Marine Fungi

Cited by 27 publications

References 19 publications

Bioaccumulation and biovolatilization of various elements using filamentous fungus Scopulariopsis brevicaulis

Bioaccumulation and biovolatilization of various elements using filamentous fungus Scopulariopsis brevicaulis

An investigation on tolerance and accumulation of a facultative marine fungus Aspergillus flavus to pentavalent arsenic

Intra- and Extracellular Biosynthesis of Gold Nanoparticles by a Marine-Derived Fungus Rhizopus oryzae

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