Heavy metal resistant endophytic fungi isolated from Nypa fruticans in Kuching Wetland National Park

Choo, Jenny; Sabri, Nuraini Binti Mohd; Tan, Daniel; Mujahid, Aazani; Müller, Moritz

doi:10.1007/s12601-015-0040-2

Cited by 26 publications

(10 citation statements)

References 35 publications

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“…According to Choo et al . (), a Pestalotiopsis sp. isolate living as an endophyte resisted at high Pb(II) concentrations.…”

Section: Discussionmentioning

confidence: 99%

“…A similar activity was suggested by da Silva who showed that Chaetomium aureum was able to grow at the presence of lead nitrate and to reduce free Pb, decreasing water-soluble and exchangeable lead concentrations in soil. According to Choo et al (2015), a Pestalotiopsis sp. isolate living as an endophyte resisted at high Pb(II) concentrations.…”

Section: Microbial Communities' Analysismentioning

confidence: 99%

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Lead soaps formation and biodiversity in a XVIII Century wax seal coloured with minium

Šoltýs

Planý

Biocca³

et al. 2019

Environmental Microbiology

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Summary A multidisciplinary approach was carried out in order to study the biodeterioration and the associated microbiome of a XVIII Century wax seal coloured with minium. A small wax seal fragment was observed by scanning electron microscopy combined with energy dispersive spectroscopy in non‐destructive mode. The same object was analysed by Raman and Fourier‐transform infrared spectroscopy. The identification of the microbiota growing on the seal was performed with both a culture‐dependent strategy, combined with hydrolytic assays, and high‐throughput sequencing using the MinION platform. The whole bacterial 16S rRNA gene and the fungal markers ITS and 28S rRNA were targeted. It was observed that the carnauba wax coloured with lead tetroxide (minium) was covered by a biofilm consisting of a network of filaments and other structures of microbial origin. The culture‐dependent and culture‐independent investigations showed the presence of a complex microbiota composed mainly by fungal members, which demonstrated interesting properties related to lipids and lead processing. The formation of lead soaps and secondary biogenic minerals was also described.

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“…According to Choo et al . (), a Pestalotiopsis sp. isolate living as an endophyte resisted at high Pb(II) concentrations.…”

Section: Discussionmentioning

confidence: 99%

Section: Microbial Communities' Analysismentioning

confidence: 99%

Lead soaps formation and biodiversity in a XVIII Century wax seal coloured with minium

Šoltýs

Planý

Biocca³

et al. 2019

Environmental Microbiology

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“…Other research successfully amplified fungal DNA with annealing temperature of 40, 47 and 54 (Choo et al 2015;Kramer et al 2016;o C Krishnan et al 2016).…”

Section: Fungus Identificationmentioning

confidence: 99%

Antibacterial Activity of Red Pigment Isolated From Coastal Endophytic Fungi Against Multi-Drug Resistant Bacteria

et al. 2017

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Multidrug-resistant (MDR) bacteria infections become a serious problem for these several decades. To solve this issue, finding of new antibiotics candidate in an urgency. Natural pigment is known to has biological activity against pathogenic bacteria. Coastal fungi are unexplored source of natural pigment to fight MDR bacteria. This research was aimed to isolate coastal endophytic fungi from smooth ant plant (Hydophytum formicarum), to screen endophytic fungi which produce red pigment, to extract the red pigment, to determine antibacterial activity of the red pigment and to identify the coastal endophytic fungi producing the red pigment. In this study, 7 fungi were isolated as endophytic fungi from H. formicarum. There were 3 isolates which produced extracellular pigment i.e. RS 1A which produced red pigment, RS 3 produced black pigment and RS 6A produced yellow pigment. Our study focused on red pigment which is produced by endophytic fungus strain RS 1A. The yield of red pigment was 8.8657% (w/w). This study showed that red pigment had antibacterial activity against Escherichia coli, Acinetobacter baumannii and Proteus mirabilis strain MDR. Judging from molecular and morphological identification, the endophytic fungus strain RS 1A was identified as Aspergillus versicolor.

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“…Pestalotiopsis sp. isolated from Nypa fruticans from wetlands of Sarawak has been identified to be able to resist heavy metal ions (Cu, Cr, Pb and Zn) up to 1000 ppm (Choo et al, 2015) which motivated our study to assess biosorptive abilities of this endophytic fungus. Members of the Pestalotiopsis have also shown potential to be used as biofuel feedstock (Sia et al, 2017) and been able to degrade polyurethane polymers (Bong et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…There are several encapsulation techniques available for biomass including alginate, polyacrylamide, polyvinyl alcohol, polysulfone, silica gel, cellulose and glutaraldehyde (Park et al, 2010) and the present study aims to encapsulate heavy-metal resistant Pestalotiopsis sp. (Choo et al, 2015) and further investigate the efficiency of dead and live encapsulated Pestalotiopsis sp. biomass on its biosorption abilities.…”

Section: Introductionmentioning

confidence: 99%

Biosorption and proteomic analysis of an encapsulated endophytic heavy-metal resistant Pestalotiopsis sp.

Choo¹,

Rahmad²,

Al‐Obaidi³

et al. 2019

MJM

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Aims: A study on biosorption ability using encapsulated endophytic fungi has been carried out to investigate its biosorption potential in removing heavy metals. Biosorption has emerged as an alternative bioremediation process to remove and sequester heavy metal ions from polluted water. An endophytic Pestalotiopsis sp. (isolated from Nypa fruticans) was found to be able to resist copper (Cu), chromium (Cr), lead (Pb) and zinc (Zn) up to 1,000 ppm and thus the aim of this study was to investigate the biosorption ability using encapsulated live and dead Pestalotiopsis sp. biomass (at pH 4-6) to remove heavy metals. Additionally, a proteomic study was conducted to investigate down-and up-regulation expression levels of proteins under the treatment of the heavy metals. Methodology and results: Encapsulated live fungal biomass displayed higher efficiency in removing chromium at pH 5 and 6, while both encapsulated live and dead biomass were able to remove lead at pH 4 and 5 and copper at pH 5. Five (5) proteins of interest were identified via MALDI-ToF analysis. Among the proteins identified, multidrug resistance protein (MRP homolog) was up-regulated in the presence of lead. Conclusion, significance and impact of study: The data obtained in this study provides an initial understanding of the biosorptive and defensive mechanisms of Pestalotiopsis sp. under heavy metal stress.

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Heavy metal resistant endophytic fungi isolated from Nypa fruticans in Kuching Wetland National Park

Cited by 26 publications

References 35 publications

Lead soaps formation and biodiversity in a XVIII Century wax seal coloured with minium

Lead soaps formation and biodiversity in a XVIII Century wax seal coloured with minium

Antibacterial Activity of Red Pigment Isolated From Coastal Endophytic Fungi Against Multi-Drug Resistant Bacteria

Biosorption and proteomic analysis of an encapsulated endophytic heavy-metal resistant Pestalotiopsis sp.

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