Isolation of a broad spectrum antibiotic producer bacterium, Pseudoalteromonas piscicida PG-02, from the Persian Gulf

Darabpour, Esmaeil; Ardakani, Mohammad Roayaei; Motamedi, Hossein; Ronagh, Mohammad Taghi

doi:10.3329/bjp.v6i2.8592

Cited by 8 publications

(7 citation statements)

References 18 publications

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“…Vyne (2011) had stated that many species of Pseudoalteromonas shares a very high 16S rRNA gene sequence identity to each other, which was the explanation why both P. rubra and P. viridis were grouped in same clade of phylogenetic tree in this study. This phenomenon has also been reported by Isnansetyo et al (2009) and Darabpour et al (2011). ISSN Table 1 shows the mean value comparison of zone of inhibition obtained for intracellular and extracellular extract.…”

Section: Description Characterization and Identification Of The Marisupporting

confidence: 82%

“…Similarly, Zheng et al (2005) and Radjasa et al (2009) also had isolated various antimicrobial compounds from macroalgae associated bacteria. It is well known that the bacteria that were isolated from biotic sources have potential in producing various bioactive compounds compared to abiotic source (Darabpour et al, 2011;Hamid et al, 2013) because of the symbiotic relationship that occurred between the bacteria and host. In this symbiotic relationship, the host will provide nutrients such as vitamins, polysaccharides and fatty acids, and in returns the bacteria will secrete amino acid, antibiotics and toxins which improve defence system of its host.…”

Section: Description Characterization and Identification Of The Marimentioning

confidence: 99%

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Production, characterization and antibacterial activity of prodigiosin pigment produced by Pseudoalteromonas rubra BF1A IBRL associated with a marine macroalgae Enteromorpha sp.

Sulaiman¹,

Demirtaş²,

Noordin³

2019

MJM

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Section: Description Characterization and Identification Of The Marisupporting

confidence: 82%

Section: Description Characterization and Identification Of The Marimentioning

confidence: 99%

Production, characterization and antibacterial activity of prodigiosin pigment produced by Pseudoalteromonas rubra BF1A IBRL associated with a marine macroalgae Enteromorpha sp.

Sulaiman¹,

Demirtaş²,

Noordin³

2019

MJM

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“…Therefore, exploring the new sources of compounds with antimicrobial effect is important to find novel agents against resistant pathogen microorganisms. 1,2 Tracking the novel natural antibiotics that defeat antibiotic resistance of pathogenic microorganisms is a vital solution for the obstacle. [3][4][5][6] Nowadays, microbial natural products could be the source of the majority of the antibiotics which are commonly used in different fields.…”

Section: Introductionmentioning

confidence: 99%

Antibacterial and Antifungal Activity of Novel Freshwater Bacterium Tabrizicola aquatica as a Prominent Natural Antibiotic Available in Qurugol Lake

et al. 2020

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Background : Recently, resistant pathogenic microorganisms have become increasingly wide spread. The search for new natural antibiotics is a viable solution to this problem. For this aim we investigated the antimicrobial ability of Tabrizicola aquatica, the novel bacterium isolated from Qurugol Lake located nearby Tabriz city, Iran. Methods: The antimicrobial properties of Tabrizacola aquatica was investigated using well diffusion test. Tabtizicola aquatica was incubated at 40℃ in shaking incubator at 150 rpm for 14 days. The culture was centrifuged to obtain cell free supernatant, which was sterilized using 0.2 μm filter paper and lyophilized. Microorganisms were lawn and then wells were prepared over the agar plates. About 100 ml of the diluted lyophilized supernatant was added to the wells. The plates then were incubated at 37℃. After 48 hours, antimicrobial activity was defined by measuring the inhibition zone diameter. Results: The bacterial filtrates had considerable antagonistic effect against Escherichia coli, Rhizobium radiobacter, Pseudomonas syringae, Erwinia amylovora, Botrytis cinerea, Neurospora crassa and Fusarium oxysporum. However, the filtrates did not show any inhibitory action on the Aspergillus flavus and Klebsiella pneumonia. The supernatant decreased the growth zone on Streptococcus aureus, Pseudomonas aeruginosa, Shigella flexneri, Xanthomonas camoestris and Bassilus cereos. The result of MIC against pathogens was found for Neurospora crassa in the 50 µg/mL. Conclusion: The results, suggested that Tabrizicola aquatica and similar bacteria can be helpful to control freshwater natural water sources from pathogenic microorganism. Moreover, microbial natural products are still the most promising source of new antibiotics. Our results point out a scope for characterization of the metabolites and could be a candidate in the identification of novel antibiotics.

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“…Therefore finding novel sources of antimicrobial compounds is essential to introduce effective agents against resistant pathogen microorganisms. [9][10][11] In this era, halophilic bacteria can be a novel source of antimicrobial compounds, 12 and up to now, various antimicrobial and antitumoral materials have been identified from slight and extremely halophilic Prokaryotes such as Halocins, a proteinaceous antimicrobial compound. 13 In 2012, a new source of bacterial biodiversity was isolated from soil of Daecheon Beach and Saemangeum Sea of Korea where the most of isolates were actinobacteria that were capable of producing antibacterial and antifungal metabolites.…”

Section: Introductionmentioning

confidence: 99%

Isolation and Identification of Antibiotic-Producing Halophilic Bacteria from Dagh Biarjmand and Haj Aligholi Salt Deserts, Iran

et al. 2019

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Background: Halophilic bacteria are potent organisms in production of novel bioactive antimicrobial compounds which might be considered in drug innovation and control of plant pathogens. Salt deserts in Semnan province are of the most permanent hypersaline areas in the North of Iran. Despite the importance of these areas, there is no scientific report regarding the biodiversity and potency of their halophilic bacteria. Thus, aforementioned areas were selected to detect the halophilic bacteria. Methods: Here, seven strains were isolated and cultured on their molecular and biochemical properties were characterized. To determine the antibiotic potency of the isolates, agar well diffusion method was conducted. Phylogenetic analysis was done to reveal the isolates relationship with previously known strains. Results: As a result, growth of the strains in the medium containing 5 to 20% (w/v) NaCl determined that the majority of the isolates were moderately halophile. Catalase activity of all strains was positive. The results represented that D6A, Dar and D8B have antimicrobial effects against different plant and human pathogens. Phylogenic tree analysis also showed that two strains of D6A and Dar are belonged to Bacillus subtilis and D8B is belonged to Virgibacillus olivae. The bacteria extracts were evaluated for their antifungal and antibacterial activities on human and Plant pathogenic strains. The MIC of the extract B. subtilis against was found active against human pathogenic fungi and Plant pathogenic bacteria and fungi, ranging from 12.5 to 25 µg/mL. Conclusion: This study highlights the therapeutic and prophylactic potential of B. subtilis extracts as antibacterial and antifungal agents.

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Isolation of a broad spectrum antibiotic producer bacterium, Pseudoalteromonas piscicida PG-02, from the Persian Gulf

Cited by 8 publications

References 18 publications

Production, characterization and antibacterial activity of prodigiosin pigment produced by Pseudoalteromonas rubra BF1A IBRL associated with a marine macroalgae Enteromorpha sp.

Production, characterization and antibacterial activity of prodigiosin pigment produced by Pseudoalteromonas rubra BF1A IBRL associated with a marine macroalgae Enteromorpha sp.

Antibacterial and Antifungal Activity of Novel Freshwater Bacterium Tabrizicola aquatica as a Prominent Natural Antibiotic Available in Qurugol Lake

Isolation and Identification of Antibiotic-Producing Halophilic Bacteria from Dagh Biarjmand and Haj Aligholi Salt Deserts, Iran

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