scholarly journals Antimicrobial potential of metabolites extracted from bacterial symbionts associated with marine sponges in coastal area of Gulf of Mannar Biosphere, India

2013 ◽  
Vol 58 (3) ◽  
pp. 231-241 ◽  
Author(s):  
S. Skariyachan ◽  
A. G. Rao ◽  
M.R. Patil ◽  
B. Saikia ◽  
V. Bharadwaj KN ◽  
...  
Keyword(s):  
Coastal Area ◽  
Marine Sponges ◽  
Gulf Of Mannar ◽  
Bacterial Symbionts ◽  
Antimicrobial Potential

Production of Novel Bioactive Compounds by the Bacteria Associated with Some Marine Sponges of Gulf of Mannar and Palk Bay, Southeast Coast of India

2018 ◽  
Vol 6 (8) ◽  
pp. 183
Author(s):  
V. Ramadas ◽  
G. Chandralega
Keyword(s):  
Bioactive Compounds ◽  
Bacterial Species ◽  
Marine Sponges ◽  
Marine Organisms ◽  
Gulf Of Mannar ◽  
Bacterial Symbionts ◽  
Palk Bay ◽  
Excellent Source

Sponges, exclusively are aquatic and mostly marine, are found from the deepest oceans to the edge of the sea. There are approximately 15,000 species of sponges in the world, of which, 150 occur in freshwater, but only about 17 are of commercial value. A total of 486 species of sponges have been identified in India. In the Gulf of Mannar and Palk Bay a maximum of 319 species of sponges have been recorded. It has been proved that marine organisms are excellent source of bioactive secondary metabolites and number of compounds of originated from marine organisms had been reported to possess in-vitro and in-vivo immuno stimulatory activity. Extracts from 20 sponge species were tested for bacterial symbionts and bioactive compounds were isolated from such associated bacterial species in the present study.

scholarly journals Comparative morphometry, biochemical and elemental composition of three marine sponges (Petrosiidae) from Gulf of Mannar, India

2011 ◽  
Vol 23 (1) ◽  
pp. 16-23 ◽  
Author(s):  
Ramjee Pallela ◽  
Srikanth Koigoora ◽  
Venu Gopal Gunda ◽  
Madhavendra Sakunthala Sunkara ◽  
Venkateswara Rao Janapala
Keyword(s):  
Elemental Composition ◽  
Marine Sponges ◽  
Gulf Of Mannar

scholarly journals Antimicrobial potential of selected brown seaweeds from Vedalai coastal waters, Gulf of Mannar

2011 ◽  
Vol 1 (2) ◽  
pp. 114-120 ◽  
Author(s):  
K Manivannan ◽  
G Karthikai devi ◽  
P Anantharaman ◽  
T Balasubramanian
Keyword(s):  
Coastal Waters ◽  
Gulf Of Mannar ◽  
Brown Seaweeds ◽  
Antimicrobial Potential

scholarly journals Seasonal Variation in Antimicrobial Activity of Crude Extracts of Psammaplysilla sp. 1 from Phillips Reef, South Africa

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Wasswa Cuthbert Kibungu ◽  
Justine Fri ◽  
Anna-Maria Clarke ◽  
Anthony Otigbu ◽  
Henry Akum Njom
Keyword(s):  
South Africa ◽  
Antimicrobial Activity ◽  
South African ◽  
Marine Invertebrates ◽  
Marine Sponges ◽  
Biologically Active ◽  
Antimicrobial Potential ◽  
Crude Extracts ◽  
Four Seasons ◽  
Agar Well Diffusion Assay

Marine invertebrates constitute a diverse group of marine organisms beneficial to humanity due to their therapeutic significance. The marine sponge species Psammaplysilla sp. 1 was collected from Philips Reef, South Africa, over a four-season period and assayed for antimicrobial potential. The physicochemical parameters of the collection site were also recorded. The sponge crude extracts’ antimicrobial activity was evaluated using an agar well diffusion assay against 5 pathogens. Phytochemical screening was conducted to identify the presence of 7 critical phytochemical groups. During the four seasons, the mean water temperature was 17.35°C ± 2.06, with autumn recording the highest (20°C) temperature. Antifungal activity was observed by Psammaplysilla sp. 1 (30 mm) against C. albicans, and this was higher than that showed by standard drugs ICZ-10 µg (15 ± 0.1 mm), FLU-15 µg (21 ± 0.2 mm), and VCZ-5 µg (17 ± 0.1 mm), respectively. Similar bioactivities were observed seasonally with Psammaplysilla sp. 1 (22 mm and 24 mm) during autumn and spring, respectively, against C. difficile while only crude extracts collected in spring showed bioactivity against C. albicans. Psammaplysilla sp. crude extracts showed broad-spectrum bioactivity against all test pathogens. DCM : ME crude extracts tested positive for the presence of 2/7 of the phytochemicals (terpenoids and flavonoids). GC-MS revealed several previously reported biologically active compounds such bicyclo[4.2.0]octa-1,3,5-trien-7-ol and phenol, 2,6-dibromo, some of which have been found in plants. This study revealed that sponge bioactivity is dependent on the season and further validated the antimicrobial potential of South African marine sponges.

scholarly journals Seasonal Variation in Antimicrobial Activity of Crude Extracts of Psammaplysilla Sp. 1 From Phillip’s Reef, South Africa

2021 ◽  
Author(s):  
Cuthbert Kibungu ◽  
Anthony Otigbu ◽  
Anna-Maria Clarke ◽  
Fri Justine ◽  
Henry Njom
Keyword(s):  
South Africa ◽  
Antimicrobial Activity ◽  
South African ◽  
Marine Invertebrates ◽  
Marine Sponges ◽  
Biologically Active ◽  
Antimicrobial Potential ◽  
Crude Extracts ◽  
Four Seasons ◽  
Agar Well Diffusion Assay

Abstract Marine invertebrates constitute a diverse group of marine organisms beneficial to humankind due to their therapeutic significance. The marine sponge species Psammaplysilla sp. 1 was collected from Philips Reef, South Africa, over a four-season period and assayed for antimicrobial potential. The physicochemical parameters of the collection site were also recorded. The sponge crude extracts' antimicrobial activity was evaluated using an agar well diffusion assay against five pathogens. Phytochemical screening was conducted to identify the presence of 7 critical phytochemical groups. During the four seasons, the temperature was 17.35 oC ± 2.06, with autumn recording the highest (20 oC) temperature. Antifungal activity was observed by Psammaplysilla sp. 1 (30 mm) against C. albicans, and this was higher than that shown by standard drugs ICZ-10µg (15 ± 0.1 mm), FLU-15µg (21 ± 0.2 mm), VCZ-5µg (17 ± 0.1 mm) respectively. Similar bioactivities were observed seasonally with Psammaplysilla sp. 1 (22 mm and 24 mm) during autumn and spring, respectively, against C. difficile, while only crude extracts collected in spring showed bioactivity against C. albicans. Psammaplysilla sp crude extracts showed broad-spectrum bioactivity against all test pathogens. DCM:ME crude extracts tested positive for the presence of 2/7 of the phytochemicals (terpenoids and flavonoids). GC-MS revealed several previously reported biologically active compounds such as Bicyclo[4.2.0]octa-1,3,5-trien-7-ol and Phenol, 2,6-dibromo has been found in plants. This study revealed that sponge bioactivity is dependent on the season and further validated the antimicrobial potential of South African marine sponges.

Diversity and expression of nitrogen fixation genes in bacterial symbionts of marine sponges

2008 ◽  
Vol 10 (11) ◽  
pp. 2910-2921 ◽  
Author(s):  
Naglaa M. Mohamed ◽  
Albert S. Colman ◽  
Yossi Tal ◽  
Russell T. Hill
Keyword(s):  
Nitrogen Fixation ◽  
Marine Sponges ◽  
Bacterial Symbionts ◽  
Nitrogen Fixation Genes

scholarly journals A symbiont phage protein aids in eukaryote immune evasion

2019 ◽  
Author(s):  
M.T. Jahn ◽  
K. Arkhipova ◽  
S.M. Markert ◽  
C. Stigloher ◽  
T. Lachnit ◽  
...  
Keyword(s):  
Marine Sponges ◽  
Genomic Diversity ◽  
Bacterial Symbionts ◽  
Macrophage Infection ◽  
New Frontier ◽  
Phage Protein ◽  
Microbe Interactions ◽  
Host Microbe Interactions ◽  
Ankyrin Protein

AbstractPhages are increasingly recognized as important members of host associated microbial communities. While recent studies have revealed vast genomic diversity in the virosphere, the new frontier is to understand how newly discovered phages may affect higher order processes, such as in the context of host-microbe interactions. Here, we aim to understand the tripartite interplay between phages, bacterial symbionts and marine sponges. In a viromics approach, we discover 491 novel viral clusters and show that sponges, as filter-feeding organisms, are distinct viral niches. By using a nested sampling design, we show that each sponge individual of the four species investigated harbours its own unique virome, regardless of the tissue investigated. We further discover a novel, symbiont phage-encoded ankyrin domain-containing protein which appears to be widely spread in phages of many host-associated contexts including human. The ankyrin protein (ANKp) modulates the eukaryotic immune response against bacteria as confirmed in macrophage infection assays. We predict that the role of ANKp in nature is to facilitate co-existence in the tripartite interplay between phages, symbionts and sponges and possibly in many other host-microbe associations.

Diketopiperazines and other bioactive compounds from bacterial symbionts of marine sponges

2020 ◽  
Vol 113 (7) ◽  
pp. 875-887
Author(s):  
José Diogo Santos ◽  
Inês Vitorino ◽  
Mercedes de la Cruz ◽  
Caridad Díaz ◽  
Bastien Cautain ◽  
...  
Keyword(s):  
Bioactive Compounds ◽  
Marine Sponges ◽  
Bacterial Symbionts
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