scholarly journals Defensive properties of secondary metabolites from the Caribbean gorgonian coral Erythropodium caribaeorum

1991 ◽  
Vol 75 ◽  
pp. 1-8 ◽  
Author(s):  
W Fenical ◽  
JR Pawlik
Keyword(s):  
Secondary Metabolites ◽  
Gorgonian Coral ◽  
The Caribbean ◽  
Erythropodium Caribaeorum

scholarly journals Pubinernoid A and Apo-9′-fucoxanthinone, Secondary Metabolites from a Gorgonian Coral Pinnigorgia sp

2016 ◽  
Vol 11 (6) ◽  
pp. 1934578X1601100
Author(s):  
Hsin-Huan Chang ◽  
Yu-Chia Chang ◽  
Wu-Fu Chen ◽  
Tsong-Long Hwang ◽  
Lee-Shing Fang ◽  
...  
Keyword(s):  
Secondary Metabolites ◽  
Spectroscopic Data ◽  
Spectroscopic Analysis ◽  
Inhibitory Effect ◽  
Human Neutrophils ◽  
Gorgonian Coral ◽  
First Report ◽  
Significant Inhibitory Effect ◽  
Animal Source

The structures of pubinernoid A (1) and apo-9′-fucoxanthinone (2), isolated from a gorgonian coral Pinnigorgia sp., were elucidated on the basis of spectroscopic analysis and by comparison of their spectroscopic data with those of known compounds. This is the first report of 1 and 2 from an animal source. Apo-9′-fucoxanthinone (2) displayed a significant inhibitory effect on the release of elastase by human neutrophils, with an IC50 value of 5.75 μM.

New briarein diterpenes from the Caribbean gorgonians Erythropodium caribaeorum and Briareum sp

1991 ◽  
Vol 56 (7) ◽  
pp. 2344-2357 ◽  
Author(s):  
Evamarie O. Pordesimo ◽  
Francis J. Schmitz ◽  
Leon S. Ciereszko ◽  
M. Bilayet Hossain ◽  
Dick Van der Helm
Keyword(s):  
The Caribbean ◽  
Erythropodium Caribaeorum

scholarly journals Australian Dust Storm Associated with Extensive Aspergillus sydowii Fungal “Bloom” in Coastal Waters

2014 ◽  
Vol 80 (11) ◽  
pp. 3315-3320 ◽  
Author(s):  
Gustaaf Hallegraeff ◽  
Frank Coman ◽  
Claire Davies ◽  
Aiko Hayashi ◽  
David McLeod ◽  
...  
Keyword(s):  
Coastal Waters ◽  
Dust Storm ◽  
Marine Ecosystem ◽  
Dust Storms ◽  
Storm Event ◽  
Rrna Gene ◽  
Aspergillus Sydowii ◽  
Gorgonian Coral ◽  
Content Type ◽  
The Caribbean

ABSTRACTA massive central Australian dust storm in September 2009 was associated with abundant fungal spores (150,000/m3) and hyphae in coastal waters between Brisbane (27°S) and Sydney (34°S). These spores were successfully germinated from formalin-preserved samples, and using molecular sequencing of three different genes (the large subunit rRNA gene [LSU], internal transcribed spacer [ITS[, and beta-tubulin gene), they were conclusively identified asAspergillus sydowii, an organism circumstantially associated with gorgonian coral fan disease in the Caribbean. Surprisingly, no human health or marine ecosystem impacts were associated with this Australian dust storm event. Australian fungal cultures were nontoxic to fish gills and caused a minor reduction in the motility ofAlexandriumorChattonellaalgal cultures but had their greatest impacts onSymbiodiniumdinoflagellate coral symbiont motility, with hyphae being more detrimental than spores. While we have not yet seen any soft coral disease outbreaks on the Australian Great Barrier Reef similar to those observed in the Caribbean and while this particular fungal population was non- or weakly pathogenic, our observations raise the possibility of future marine ecosystem pathogen impacts from similar dust storms harboring more pathogenic strains.

Briarane, Erythrane, and Aquariane Diterpenoids from the Caribbean Gorgonian Erythropodium caribaeorum.

ChemInform ◽  
2004 ◽  
Vol 35 (5) ◽  
Author(s):  
Orazio Taglialatela-Scafati ◽  
Kyle S. Craig ◽  
Delphine Reberioux ◽  
Michel Roberge ◽  
Raymond J. Andersen
Keyword(s):  
The Caribbean ◽  
Erythropodium Caribaeorum

scholarly journals Isolation of Smenopyrone, a Bis-γ-Pyrone Polypropionate from the Caribbean Sponge Smenospongia aurea

Marine Drugs ◽  
2018 ◽  
Vol 16 (8) ◽  
pp. 285 ◽  
Author(s):  
Germana Esposito ◽  
Roberta Teta ◽  
Gerardo Della Sala ◽  
Joseph Pawlik ◽  
Alfonso Mangoni ◽  
...  
Keyword(s):  
Secondary Metabolites ◽  
Chemical Communication ◽  
Spectroscopic Analysis ◽  
Marine Sponges ◽  
Symbiotic Bacteria ◽  
Model Compounds ◽  
Organic Extract ◽  
Bacterial Signaling ◽  
The Caribbean ◽  
Absolute Stereochemistry

The organic extract of the Caribbean sponge Smenospongia aurea has been shown to contain an array of novel chlorinated secondary metabolites derived from a mixed PKS-NRPS biogenetic route such as the smenamides. In this paper, we report the presence of a biogenetically different compound known as smenopyrone, which is a polypropionate containing two γ-pyrone rings. The structure of smenopyrone including its relative and absolute stereochemistry was determined by spectroscopic analysis (NMR, MS, ECD) and supported by a comparison with model compounds from research studies. Pyrone polypropionates are unprecedented in marine sponges but are commonly found in marine mollusks where their biosynthesis by symbiotic bacteria has been hypothesized and at least in one case demonstrated. Since pyrones have recently been recognized as bacterial signaling molecules, we speculate that smenopyrone could mediate inter-kingdom chemical communication between S. aurea and its symbiotic bacteria.

ChemInform Abstract: Pintoxolanes A-C, Highly Functionalized 3,14-Oxa-bridged Cembranoids from the Caribbean Gorgonian Coral Eunicea pinta

ChemInform ◽  
2014 ◽  
Vol 45 (46) ◽  
pp. no-no
Author(s):  
Janet Figueroa ◽  
Brunilda Vera ◽  
Abimael D. Rodriguez
Keyword(s):  
Gorgonian Coral ◽  
The Caribbean

scholarly journals Active phytochemicals present in the Guava Tree (Psidium Guajava) leaf Extracts that grow in Uganda.

2020 ◽  
Author(s):  
◽  
David serunjogi
Keyword(s):  
Secondary Metabolites ◽  
Inorganic Compounds ◽  
Psidium Guajava ◽  
Distilled Water ◽  
Test Results ◽  
Leaf Extracts ◽  
Antiviral Compounds ◽  
The Caribbean ◽  
Method Of Extraction ◽  
Test Result

Abstract Background: The Guava tree is small in the myrtle family (Myrtaceae), native to Mexico, Central America, the Caribbean, and northern South America. It contains a high content of organic and inorganic compounds like secondary metabolites such as antioxidants, polyphenols, antiviral compounds, and anti-inflammatory compounds. Such chemicals are produced by plants through primary or secondary metabolism whereas Guava products have been used as a source of medicine and while they have proved to work effectively, little is known about the composition of such plant origin products from Uganda. Methodology: The maceration method of extraction was used to obtain the guava extract. The leaves were crushed into a powder using a blender and 20g of the powder was added into differently labeled beakers containing 100mls of distilled water and 100mls of increasing concentration of methanol from 30%, 50%, and 70%. The analysis involved Saponins, Phenols and Tannins, Terpenoids, Flavonoids, and Glycosides, and Laboratory tests are done included the Ferric Chloride test, Shinoda test, Salkowski test, Concentrate H2SO4 test, and Foam test. Results and discussion: Phytochemicals (Saponins, Phenols and Tannins, Terpenoids, Flavonoids, and Glycosides) are present in the leaves of the guava tree (Psidium guajava) that grows in Uganda. Psidium guajava extract obtained using distilled water contained all the phytochemicals tested apart from terpenoids which showed a negative test result. Methanol of increasing concentrations can also be used to extract phytochemicals from the leaves. Conclusions and recommendations: It’s now evident that the Guava tree that grows in Uganda contains phytochemicals (secondary metabolites). Water and methanol of 30%, 50%, and 70% can be used for extraction. Future detailed studies in Africa should focus on the purification of these active secondary metabolites and also determine their concentration. Other parts of the plant such as its bark, roots, and fruits need to be studied.

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