scholarly journals Diversity and Antimicrobial Activity of Vietnamese Sponge-Associated Bacteria

Marine Drugs ◽  
2021 ◽  
Vol 19 (7) ◽  
pp. 353
Author(s):  
Ton That Huu Dat ◽  
Nguyen Thi Kim Cuc ◽  
Pham Viet Cuong ◽  
Hauke Smidt ◽  
Detmer Sipkema
Keyword(s):  
Antimicrobial Activity ◽  
Culture Media ◽  
Culture Broth ◽  
Marine Sponges ◽  
Bacterial Composition ◽  
Associated Bacteria ◽  
Indicator Microorganisms ◽  
Cultivable Bacteria ◽  
Sponge Associated Bacteria ◽  
Macrolactin A

This study aimed to assess the diversity and antimicrobial activity of cultivable bacteria associated with Vietnamese sponges. In total, 460 bacterial isolates were obtained from 18 marine sponges. Of these, 58.3% belonged to Proteobacteria, 16.5% to Actinobacteria, 18.0% to Firmicutes, and 7.2% to Bacteroidetes. At the genus level, isolated strains belonged to 55 genera, of which several genera, such as Bacillus, Pseudovibrio, Ruegeria, Vibrio, and Streptomyces, were the most predominant. Culture media influenced the cultivable bacterial composition, whereas, from different sponge species, similar cultivable bacteria were recovered. Interestingly, there was little overlap of bacterial composition associated with sponges when the taxa isolated were compared to cultivation-independent data. Subsequent antimicrobial assays showed that 90 isolated strains exhibited antimicrobial activity against at least one of seven indicator microorganisms. From the culture broth of the isolated strain with the strongest activity (Bacillus sp. M1_CRV_171), four secondary metabolites were isolated and identified, including cyclo(L-Pro-L-Tyr) (1), macrolactin A (2), macrolactin H (3), and 15,17-epoxy-16-hydroxy macrolactin A (4). Of these, compounds 2-4 exhibited antimicrobial activity against a broad spectrum of reference microorganisms.

ANTIMICROBIAL ACTIVITIES OF METHANOL EXTRACT FROM UNIDENTIFIED SPONGE ASSOCIATED BACTERIA IN LEMUKUTAN ISLAND, KALIMANTAN BARAT

2009 ◽  
Vol 1 (2) ◽  
Author(s):  
Risa Nofiani ◽  
Siti Nurbetty ◽  
Ajuk Sapar
Keyword(s):  
Antimicrobial Activity ◽  
Bacillus Subtilis ◽  
Pathogenic Bacteria ◽  
Methanol Extract ◽  
Agar Medium ◽  
Antimicrobial Activities ◽  
Antimicrobial Compounds ◽  
Associated Bacteria ◽  
Minimum Inhibitory Concentrations ◽  
Sponge Associated Bacteria

<p>The increase of issues on the antibiotics resistant pathogenic bacteria has triggered high exploration for new antimicrobial compounds. One of the potential sources is sponge-associated bacteria. The aim of this study was to get sponge-associated bacteria extract containing antimicrobial activities. On the basis screening of antimicrobial activity using by streaking on agar medium, there were two potential isolates with antimicrobial activities namely LCS1 and LCS2. The two isolates were cultivated,then secondary metabolite product were extracted using methanol as a solvent. Minimum inhibitory concentrations (MICs) of extract LCS 1 were 1,000 μg/well for S. aureus, 950 μg/well for Salmonella sp.and 800 μg/well for Bacillus subtilis. Minimum inhibitory concentrations of extract LCS 2 were 500 μg/well for S. aureus, 1,050 μg/well for Salmonella sp., 750 μg/well for Bacillus subtilis, 350 μg/well for P. aeruginosa, 750 μg/sumur terhadap B. subtilis. Based on the MIC values, the two assay extracts have a relatively low antimicrobial activity.</p> <p>Keywords:Antimicrobial,Sponges associated bacteria,MICs</p>

ANTIMICROBIAL ACTIVITIES OF METHANOL EXTRACT FROM UNIDENTIFIED SPONGE ASSOCIATED BACTERIA IN LEMUKUTAN ISLAND, KALIMANTAN BARAT

2009 ◽  
Vol 1 (2) ◽  
Author(s):  
Risa Nofiani ◽  
Siti Nurbetty ◽  
Ajuk Sapar
Keyword(s):  
Antimicrobial Activity ◽  
Bacillus Subtilis ◽  
Pathogenic Bacteria ◽  
Methanol Extract ◽  
Agar Medium ◽  
Antimicrobial Activities ◽  
Antimicrobial Compounds ◽  
Associated Bacteria ◽  
Minimum Inhibitory Concentrations ◽  
Sponge Associated Bacteria

The increase of issues on the antibiotics resistant pathogenic bacteria has triggered high exploration for new antimicrobial compounds. One of the potential sources is sponge-associated bacteria. The aim of this study was to get sponge-associated bacteria extract containing antimicrobial activities. On the basis screening of antimicrobial activity using by streaking on agar medium, there were two potential isolates with antimicrobial activities namely LCS1 and LCS2. The two isolates were cultivated,then secondary metabolite product were extracted using methanol as a solvent. Minimum inhibitory concentrations (MICs) of extract LCS 1 were 1,000 μg/well for S. aureus, 950 μg/well for Salmonella sp.and 800 μg/well for Bacillus subtilis. Minimum inhibitory concentrations of extract LCS 2 were 500 μg/well for S. aureus, 1,050 μg/well for Salmonella sp., 750 μg/well for Bacillus subtilis, 350 μg/well for P. aeruginosa, 750 μg/sumur terhadap B. subtilis. Based on the MIC values, the two assay extracts have a relatively low antimicrobial activity. Keywords:Antimicrobial,Sponges associated bacteria,MICs

scholarly journals Bioactivity Screening and Gene-Trait Matching across Marine Sponge-Associated Bacteria

Marine Drugs ◽  
2021 ◽  
Vol 19 (2) ◽  
pp. 75
Author(s):  
Asimenia Gavriilidou ◽  
Thomas Andrew Mackenzie ◽  
Pilar Sánchez ◽  
José Ruben Tormo ◽  
Colin Ingham ◽  
...  
Keyword(s):  
Natural Products ◽  
Gene Clusters ◽  
Marine Sponges ◽  
Genetic Associations ◽  
Bioactive Substances ◽  
Associated Bacteria ◽  
Peptide Synthetases ◽  
Sponge Associated Bacteria ◽  
High Cytotoxicity

Marine sponges harbor diverse microbial communities that represent a significant source of natural products. In the present study, extracts of 21 sponge-associated bacteria were screened for their antimicrobial and anticancer activity, and their genomes were mined for secondary metabolite biosynthetic gene clusters (BGCs). Phylogenetic analysis assigned the strains to four major phyla in the sponge microbiome, namely Proteobacteria, Actinobacteria, Bacteroidetes, and Firmicutes. Bioassays identified one extract with anti-methicillin-resistant Staphylococcus aureus (MRSA) activity, and more than 70% of the total extracts had a moderate to high cytotoxicity. The most active extracts were derived from the Proteobacteria and Actinobacteria, prominent for producing bioactive substances. The strong bioactivity potential of the aforementioned strains was also evident in the abundance of BGCs, which encoded mainly beta-lactones, bacteriocins, non-ribosomal peptide synthetases (NRPS), terpenes, and siderophores. Gene-trait matching was performed for the most active strains, aiming at linking their biosynthetic potential with the experimental results. Genetic associations were established for the anti-MRSA and cytotoxic phenotypes based on the similarity of the detected BGCs with BGCs encoding natural products with known bioactivity. Overall, our study highlights the significance of combining in vitro and in silico approaches in the search of novel natural products of pharmaceutical interest.

scholarly journals Cyclic Dipeptides Produced by Marine Sponge-Associated Bacteria as Quorum Sensing Signals

2014 ◽  
Vol 9 (2) ◽  
pp. 1934578X1400900
Author(s):  
Gennaro Roberto Abbamondi ◽  
Salvatore De Rosa ◽  
Carmine Iodice ◽  
Giuseppina Tommonaro
Keyword(s):  
Quorum Sensing ◽  
Quorum Quenching ◽  
Marine Sponges ◽  
Bacterial Strains ◽  
Signal Molecule ◽  
Associated Bacteria ◽  
Cyclic Dipeptides ◽  
Sponge Associated Bacteria ◽  
Dysidea Avara ◽  
Quorum Sensing Signals

Four bacterial strains belonging to the genera Vibrio, Pseudoalteromonas and Photobacterium were isolated from the marine sponges Dysidea avara and Geodia cynodium. A Bacillus strain was isolated from Ircinia variabilis. A screening of molecules involved in quorum sensing (QS) was carried out by TLC-overlay and a new “plate T-streak” test. To analyze quorum quenching (QQ), a plate T-streak was performed with Chromobacterium violaceum. Strains of Vibrio isolated from both marine sponges and a strain of Photobacterium isolated from G. cynodium, activated QS bioreporters. A strain of Pseudoalteromonas isolated from D. avara showed QQ activity. Finally, it is reported that cyclic dipeptides isolated from strains of Vibrio sp. and Bacillus sp. (isolated from D. avara and I. variabilis, respectively) were involved in the QS mechanism. The simultaneous presence of bacteria that showed contrasting responses in bioassays for QS signal molecule synthesis in marine sponges could add an interesting dimension to the signalling interactions which may be happening in sponges.

Biotechnological Potential of Marine Sponges and their Associated Bacteria as Producers of New Pharmaceuticals (Part I)

2005 ◽  
Vol 2 (5) ◽  
Author(s):  
Carsten Thoms ◽  
Peter Schupp
Keyword(s):  
Natural Products ◽  
Large Scale ◽  
Marine Sponges ◽  
Sponge Tissue ◽  
Associated Bacteria ◽  
Biotechnological Potential ◽  
Highly Active ◽  
Medicinal Treatment ◽  
Microbial Infections ◽  
Sponge Associated Bacteria

AbstractThroughout human history natural products have provided the basis for medicinal treatment. About 60 years ago the advent of SCUBA diving techniques granted access to a thitherto untapped source of pharmacologically highly active natural products: the marine environment. In the oceans not plants but sessile animals, particularly sponges, have proven to be the most fruitful organisms in this context. Sponges have evolved a vast arsenal of chemical weapons to defend themselves against various threats from their environment. These molecules remarkably often show potent activities in pharmaceutical assays. Several sponge-derived compounds are already in clinical trials as agents against cancer, microbial infections, inflammation and other diseases. However, in many cases drug development is severely hampered by the limited supply of the respective compounds, as they are often present only in minute amounts in the sponge tissue. Big hope to circumvent this obstacle lies on the supposition that sponge-associated bacteria and not the sponges themselves are in many cases the true producers of the pharmaceutically relevant agents. Once these microorganisms are determined and cultivated outside the sponge tissue, they could be fermented for large-scale compound production. This in future could substantially increase the number of powerful sponge-derived drugs on the market.

scholarly journals A Metataxonomic Approach Reveals Diversified Bacterial Communities in Antarctic Sponges

Marine Drugs ◽  
2021 ◽  
Vol 19 (3) ◽  
pp. 173
Author(s):  
Nadia Ruocco ◽  
Roberta Esposito ◽  
Marco Bertolino ◽  
Gianluca Zazo ◽  
Michele Sonnessa ◽  
...  
Keyword(s):  
Secondary Metabolites ◽  
Morphological Analysis ◽  
Marine Sponges ◽  
Bioactive Metabolites ◽  
Associated Bacteria ◽  
Sponge Associated Bacteria ◽  
Antarctic Research ◽  
Pharmacologically Active ◽  
Pharmacologically Active Compounds ◽  
Antarctic Sponges

Marine sponges commonly host a repertoire of bacterial-associated organisms, which significantly contribute to their health and survival by producing several anti-predatory molecules. Many of these compounds are produced by sponge-associated bacteria and represent an incredible source of novel bioactive metabolites with biotechnological relevance. Although most investigations are focused on tropical and temperate species, to date, few studies have described the composition of microbiota hosted by Antarctic sponges and the secondary metabolites that they produce. The investigation was conducted on four sponges collected from two different sites in the framework of the XXXIV Italian National Antarctic Research Program (PNRA) in November–December 2018. Collected species were characterized as Mycale (Oxymycale) acerata, Haliclona (Rhizoniera) dancoi, Hemigellius pilosus and Microxina sarai by morphological analysis of spicules and amplification of four molecular markers. Metataxonomic analysis of these four Antarctic sponges revealed a considerable abundance of Amplicon Sequence Variants (ASVs) belonging to the phyla Proteobacteria, Bacteroidetes, Actinobacteria and Verrucomicrobia. In particular, M. (Oxymycale) acerata, displayed several genera of great interest, such as Endozoicomonas, Rubritalea, Ulvibacter, Fulvivirga and Colwellia. On the other hand, the sponges H. pilosus and H. (Rhizoniera) dancoi hosted bacteria belonging to the genera Pseudhongella, Roseobacter and Bdellovibrio, whereas M. sarai was the sole species showing some strains affiliated to the genus Polaribacter. Considering that most of the bacteria identified in the present study are known to produce valuable secondary metabolites, the four Antarctic sponges could be proposed as potential tools for the discovery of novel pharmacologically active compounds.

scholarly journals Selection of sponge-associated bacteria with high potential for the production of antibacterial compounds

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Riyanti ◽  
Walter Balansa ◽  
Yang Liu ◽  
Abha Sharma ◽  
Sanja Mihajlovic ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Synergistic Effects ◽  
16S Rrna Gene Sequencing ◽  
Rrna Gene ◽  
Field Station ◽  
Associated Bacteria ◽  
Sponge Associated Bacteria ◽  
Macrolactin A ◽  
Host Sponge ◽  
Selection Of

AbstractThe potential of sponge-associated bacteria for the biosynthesis of natural products with antibacterial activity was evaluated. In a preliminary screening 108 of 835 axenic isolates showed antibacterial activity. Active isolates were identified by 16S rRNA gene sequencing and selection of the most promising strains was done in a championship like approach, which can be done in every lab and field station without expensive equipment. In a competition assay, strains that inhibited most of the other strains were selected. In a second round, the strongest competitors from each host sponge competed against each other. To rule out that the best competitors selected in that way represent similar strains with the same metabolic profile, BOX PCR experiments were performed, and extracts of these strains were analysed using metabolic fingerprinting. This proved that the strains are different and have various metabolic profiles, even though belonging to the same genus, i.e. Bacillus. Furthermore, it was shown that co-culture experiments triggered the production of compounds with antibiotic activity, i.e. surfactins and macrolactin A. Since many members of the genus Bacillus possess the genetic equipment for the biosynthesis of these compounds, a potential synergism was analysed, showing synergistic effects between C14-surfactin and macrolactin A against methicillin-resistant Staphylococcus aureus (MRSA).

scholarly journals Bacteria Isolated From the Antarctic Sponge Iophon sp. Reveals Mechanisms of Symbiosis in Sporosarcina, Cellulophaga, and Nesterenkonia

2021 ◽  
Vol 12 ◽  
Author(s):  
Mario Moreno-Pino ◽  
Juan A. Ugalde ◽  
Jorge H. Valdés ◽  
Susana Rodríguez-Marconi ◽  
Génesis Parada-Pozo ◽  
...  
Keyword(s):  
Bacterial Species ◽  
Marine Ecosystem ◽  
Marine Sponges ◽  
Bacterial Strains ◽  
Diverse Range ◽  
Associated Bacteria ◽  
Sponge Associated Bacteria ◽  
Phylogenomic Analyses ◽  
The Antarctic ◽  
Antarctic Environment

Antarctic sponges harbor a diverse range of microorganisms that perform unique metabolic functions for nutrient cycles. Understanding how microorganisms establish functional sponge–microbe interactions in the Antarctic marine ecosystem provides clues about the success of these ancient animals in this realm. Here, we use a culture-dependent approach and genome sequencing to investigate the molecular determinants that promote a dual lifestyle in three bacterial genera Sporosarcina, Cellulophaga, and Nesterenkonia. Phylogenomic analyses showed that four sponge-associated isolates represent putative novel bacterial species within the Sporosarcina and Nesterenkonia genera and that the fifth bacterial isolate corresponds to Cellulophaga algicola. We inferred that isolated sponge-associated bacteria inhabit similarly marine sponges and also seawater. Comparative genomics revealed that these sponge-associated bacteria are enriched in symbiotic lifestyle-related genes. Specific adaptations related to the cold Antarctic environment are features of the bacterial strains isolated here. Furthermore, we showed evidence that the vitamin B5 synthesis-related gene, panE from Nesterenkonia E16_7 and E16_10, was laterally transferred within Actinobacteria members. Together, these findings indicate that the genomes of sponge-associated strains differ from other related genomes based on mechanisms that may contribute to the life in association with sponges and the extreme conditions of the Antarctic environment.

scholarly journals Screening and characterization of sponge-associated bacteria from Seribu Island, Indonesia producing cellulase and laccase enzymes

2020 ◽  
Vol 21 (3) ◽  
Author(s):  
WENANG MAHARSIWI ◽  
RIKA INDRI ASTUTI ◽  
ANJA MERYANDINI ◽  
Aris Tri Wahyudi
Keyword(s):  
Extreme Environment ◽  
Marine Sponges ◽  
Rrna Gene ◽  
Associated Bacteria ◽  
Family Protein ◽  
Sponge Associated Bacteria ◽  
Pseudomonas Luteola ◽  
Modified Media ◽  
The 16S Rrna Gene

Abstract. Maharsiwi W, Astuti RI, Meryandini A, Wahyudi AT. 2020. Screening and characterization of sponge-associated bacteria from Seribu Island, Indonesia producing cellulase and laccase enzymes. Biodiversitas 21: 975-981. Exploration of new enzymes from an extreme environment is important to improve industrial efficiency. This study aimed to get sponge-associated bacteria from Seribu Island with the capability to produce cellulase and laccase. These enzyme activities were indicated by the clear zones on CMC medium for cellulase and the reddish-brown zone on Guaiacol medium for laccase. About 100 of sponge-associated bacteria have been isolated from 5 marine sponges used SWC and NA modified media. As screened, one isolate (AGN89) could produce both enzymes and 11 isolates could produce cellulase. Quantitative analysis was performed using the DNS method and obtained the activities of 4 best cellulolytic isolates ranged from 0.04-0.06 UmL-1 and 0.70-1.18 UmL-1 in enzyme and specific activities, respectively. Gene-based determination for the isolate producing laccase resulted in a ±1100 bp amplicon fragment which identified as multicopper oxidase family protein. Based on the 16S-rRNA gene, AGN89 and these 4 cellulolytic isolates were identified as Pseudomonas luteola strain NBRC 103146, Bacillus aerius strain 24k, Pseudomonas aeruginosa strain DSM 50071, Mycobacterium maritypicum strain DSM 20578, and Brachybacterium conglomeratum strain J 1015. This result suggests that the sponge-associated bacteria from Seribu Island could become new enzymes producer for further applications in industry.

scholarly journals Cultivation of Sponge-Associated Bacteria from Agelas sventres and Xestospongia muta Collected from Different Depths

Marine Drugs ◽  
2019 ◽  
Vol 17 (10) ◽  
pp. 578 ◽  
Author(s):  
Anak Indraningrat ◽  
Sebastian Micheller ◽  
Mandy Runderkamp ◽  
Ina Sauerland ◽  
Leontine Becking ◽  
...  
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Marine Sponges ◽  
Plate Count ◽  
Rrna Gene ◽  
Depth Range ◽  
Prokaryotic Community ◽  
Associated Bacteria ◽  
Xestospongia Muta ◽  
Sponge Associated Bacteria

Sponge-associated bacteria have been mostly cultured from shallow water (≤30 m) sponges, whereas only few studies targeted specimens from below 30 m. This study assessed the cultivability of bacteria from two marine sponges Xestospongia muta and Agelas sventres collected from shallow (<30 m), upper mesophotic (30–60 m), and lower mesophotic (60–90 m) reefs. Sponge-associated bacteria were cultivated on six different media, and replicate plates were used to pick individual colonies or to recover the entire biomass. Prokaryotic community analysis was conducted using Illumina MiSeq sequencing of 16S rRNA gene amplicons. A total of 144 bacterial isolates were picked following a colony morphology coding scheme and subsequently identified by 16S rRNA gene sequence analysis. Sponge individuals at each depth-range harboured specific cultivable bacteria that were not retrieved from specimens collected at other depths. However, there were substantial differences in the number of colonies obtained for replicate sponges of the same species. In addition, source of inoculum and cultivation medium had more impact on the cultured prokaryotic community than sample collection depth. This suggests that the “plate count anomaly” is larger than differences in sponge-associated prokaryotic community composition related to depth.

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