Molecular identification and phylogenetic status of marineBacillus associated with coral sediment, showing antibacterial effects against human pathogens

Chatterjee, Shruti; Haldar, Soumya; Asakura, Masahiro; Yamasaki, Shinji; Balasubramanian, T.

doi:10.1007/bf03175335

Cited by 8 publications

(3 citation statements)

References 11 publications

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“…P8 inhibits both Gram+ and Gram- pathogens. This finding is supported by other studies such as those of Chatterjee et al ( 2008 ) and Prieto et al ( 2012 ) who reported antibacterial activities of Bacillus strains isolated from reef sediments and marine alga against P. aeruginosa, S. aureus, Salmonella enterica, Bacillus sp., Proteus vulgaris, E. coli , and S. typhimurium . Gram negative isolates such as Pseudomonas and Pseudoalteromonas strains (P9, P10, P11, and P20) have variable antibacterial activities toward both Gram+ and Gram− tested pathogens.…”

Section: Discussionsupporting

confidence: 87%

Antimicrobial Activities of Bacteria Associated with the Brown Alga Padina pavonica

et al. 2016

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Macroalgae belonging to the genus Padina are known to produce antibacterial compounds that may inhibit growth of human- and animal pathogens. Hitherto, it was unclear whether this antibacterial activity is produced by the macroalga itself or by secondary metabolite producing epiphytic bacteria. Here we report antibacterial activities of epiphytic bacteria isolated from Padina pavonica (Peacocks tail) located on northern coast of Tunisia. Eighteen isolates were obtained in pure culture and tested for antimicrobial activities. Based on the 16S rRNA gene sequences the isolates were closely related to Proteobacteria (12 isolates; 2 Alpha- and 10 Gammaproteobacteria), Firmicutes (4 isolates) and Actinobacteria (2 isolates). The antimicrobial activity was assessed as inhibition of growth of 12 species of pathogenic bacteria (Aeromonas salmonicida, A. hydrophila, Enterobacter xiangfangensis, Enterococcus faecium, Escherichia coli, Micrococcus sp., Salmonella typhimurium, Staphylococcus aureus, Streptococcus sp., Vibrio alginoliticus, V. proteolyticus, V. vulnificus) and one pathogenic yeast (Candida albicans). Among the Firmicutes, isolate P8, which is closely related to Bacillus pumilus, displayed the largest spectrum of growth inhibition of the pathogenic bacteria tested. The results emphasize the potential use of P. pavonica associated antagonistic bacteria as producers of novel antibacterial compounds.

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Section: Discussionsupporting

confidence: 87%

Antimicrobial Activities of Bacteria Associated with the Brown Alga Padina pavonica

et al. 2016

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“…In our previous study also, a number of bacteria were isolated from same coral reef ecosystems with potent antibacterial activity against a series of human pathogens [7]. A report on another aquatic ecosystem indicated that V. harveyi and some related vibrios isolated from shrimp larvae were resistant to erythromycin, kanamycin, penicillin G, and streptomycin [4].…”

Section: Discussionmentioning

confidence: 96%

“…Even at the base of the live coral reef, where algal attachment was more, TBC was found to be more as compared to the upper surface of coral reef where polyps were very active. This might be due to the fact that corals have their own deterrent mechanism to prevent attachments of external bacteria by producing antibacterial compounds and other bioactive substances [7].…”

Section: Discussionmentioning

confidence: 99%

Abundance, diversity and antibiotics resistance pattern of Vibrio spp. in coral ecosystem of Kurusadai island

Haldar

Mody

Jha

2010

J. Basic Microbiol.

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The abundance and species diversity of Vibrio associated with coral reef ecosystem of Kurusadai island, Tamil Nadu, India were evaluated. A total of twelve sampling locations including different live and dead coral surfaces, surrounding water and rock surface (negative control) were selected for the present study. Total viable and TCBS counts were found to be higher in dead coral as compared to that of live coral. Out of total 21 species of Vibrio isolated, 13 were identified up to species level based on biochemical tests and 16S rRNA gene sequence homology, while remaining 8 isolates did not show homology up to species level with any of the sequences available in the NCBI database. Moreover, these unidentified Vibrio spp. exhibited intra-species variation. This study indicated association of hitherto unknown Vibrio species with coral reef ecosystem of Kurusadai island. Assuming that only resistant bacteria can grow in the coral environment, susceptibility against a total of 20 antibiotics was evaluated. All the isolates exhibited resistance towards more than 6 antibiotics. Interestingly, none of the identified bacteria were previously reported to be of coral pathogen reflecting the healthy nature of the ecosystem. However, a continuous monitoring of the region will be prerequisite to envisage the role of these bacteria on the health status of the coral ecosystem.

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Antibiotic resistance pattern of bacterial strains emerged using frequent hand sanitizers during corona pandemic

Vadadoriya,

Sajeevan,

Bhojani

et al. 2024

Environ Monit Assess

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Molecular identification and phylogenetic status of marineBacillus associated with coral sediment, showing antibacterial effects against human pathogens

Cited by 8 publications

References 11 publications

Antimicrobial Activities of Bacteria Associated with the Brown Alga Padina pavonica

Antimicrobial Activities of Bacteria Associated with the Brown Alga Padina pavonica

Abundance, diversity and antibiotics resistance pattern of Vibrio spp. in coral ecosystem of Kurusadai island

Antibiotic resistance pattern of bacterial strains emerged using frequent hand sanitizers during corona pandemic

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