Whole-genome sequencing of biofilm-forming and chromium-resistant mangrove fungus Aspergillus niger BSC-1

Chatterjee, Suman; Das, Surajit

doi:10.1007/s11274-022-03497-w

Cited by 2 publications

(1 citation statement)

References 90 publications

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“…In this study, 67.86% (n=19) isolates produced biofilm in microtiter plate assay, being distributed into the following categories: 60.72% (n=17) formed weak biofilm, 7.14% (n=2) had moderate biofilm, while 32.14% (n=9) showed no biofilm formation (Table 2). Biofilm formation by chromiumresistant Stenotrophomonas maltophilia, Aspergillus niger, Staphylococcus arlettae with or without chromium stressed conditions had been described in other studies 3,32,33 .…”

Section: Resultssupporting

confidence: 57%

Screening and Identification of Chromium Resistant Bacteria from Poultry Excreta

Khan,

Badhon,

Rivu

et al. 2024

Bangla. J. Microbiol.

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The occurrence of heavy metal-resistant bacteria in the environment acts as an indicator of heavy metal pollution. The impact of heavy metal contamination in co-selection and proliferation of antimicrobial[1]resistant bacteria is well-documented in existing literature. The present study aims to determine the occurrence of chromium-resistant bacteria (CRB) in poultry feces and to characterize their antimicrobial resistance and biofilm formation ability. 28 CRBs were isolated by inoculating samples on chromium-amended media. 6 of 28 isolates were resistant to a maximum of 1000 ppm chromium. Isolated CRBs also showed varying degrees of resistance to other heavy metals, including Cd, Ni, and Hg. Biofilm formation was observed in 67.8% isolates, of which 60.7% and 7.1% were weak and moderate biofilm former, respectively. All the isolates exhibited sensitivity to Gentamicin, Chloramphenicol, Imipenem, and Amikacin. Only one isolate was multi-drug resistant. In addition, all the isolates possessed chromate reductase gene that confirmed their chromium-reducing activity. Two isolates were identified as Bacillus altituidinis and Brevibcillus parabrevis on the basis of 16s rRNA analysis. Further estimation of chromium-reduction capacity and whole genome analysis will reveal their bioremediation potential. Bangladesh J Microbiol, Volume 40, Number 1, June 2023, pp 1-6

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Section: Resultssupporting

confidence: 57%

Screening and Identification of Chromium Resistant Bacteria from Poultry Excreta

Khan,

Badhon,

Rivu

et al. 2024

Bangla. J. Microbiol.

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Pore‐forming aegerolysin and MACPF proteins in extremotolerant or extremophilic fungi

Kraševec

2024

IUBMB Life

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Aegerolysin proteins are involved in various interactions by recognising a molecular receptor in the target organism. The formation of pores in combination with larger, non‐aegerolysin‐like protein partners (such as membrane attack complex/perforin proteins [MACPFs]) is one of the possible responses in the presumed competitive exclusion of other organisms from the ecological niche. Bicomponent pairs are already observed at the gene level. Fungi growing under extreme conditions can be divided into ubiquitous and extremotolerant generalists which can compete with mesophilic species and rare, isolated extremophilic and extremotolerant specialists with narrow ecological amplitude that cannot compete. Under extreme conditions, there are fewer competitors, so fungal specialists generally produce less diverse and complicated profiles of specialised molecules. Since extremotolerant and extremophilic fungi have evolved in numerous branches of the fungal tree of life and aegerolysins are unevenly distributed across fungal genomes, we investigated whether aegerolysins, together with their partner proteins, contribute to the extreme survival ecology of generalists and specialists. We compiled a list of 109 thermo‐, psihro‐, acido‐, alkali‐, halo‐, metallo‐ and polyextremo‐tolerant/‐philic fungal species. Several challenges were identified that affected the outcome: renaming fungal species, defining extremotolerant/extremophilic traits, identifying extremotolerant/extremophilic traits as metadata in databases and linking fungal isolates to fungal genomes. The yield of genomes coding aegerolysins or MACPFs appears to be lower in extremotolerant/extremophilic fungi compared to all fungal genomes. No candidates for pore‐forming gene pairs were identified in the genomes of extremophilic fungi. Aegerolysin and MACPFs partner pairs were identified in only two of 69 species with sequenced genomes, namely in the ubiquitous metallotolerant generalists Aspergillus niger and A. foetidus. These results support the hypothesised role of these pore‐forming proteins in competitive exclusion.

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Whole-genome sequencing of biofilm-forming and chromium-resistant mangrove fungus Aspergillus niger BSC-1

Cited by 2 publications

References 90 publications

Screening and Identification of Chromium Resistant Bacteria from Poultry Excreta

Screening and Identification of Chromium Resistant Bacteria from Poultry Excreta

Pore‐forming aegerolysin and MACPF proteins in extremotolerant or extremophilic fungi

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