Chemical constituents from the red alga Plocamium brasiliense (Greville) M. Howe and W.R. Taylor

Vasconcelos, Marcelo Augusto Machado; Ferreira, Wilton José; Pereira, Renato Crespo; Cavalcanti, Diana Negrão; Teixeira, Valéria Laneuville

doi:10.1016/j.bse.2009.12.031

Cited by 20 publications

(12 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This seaweed is not abundant along the Brazilian Atlantic coast (Vetter et al 2001). However, another Plocamium species, Plocamium brasilienses, was shown to produce halogenated monoterpenes (chlorinated and brominated) but MHC-1 was not described in this work (Vasconcelos et al 2010). MHC-1 was identified by extracting the [BrCl] − and [Br 2 ] − fragment ions from the GC/ECNI-MS full scan chromatogram (Vetter et al 2001).…”

Section: Halogenated Natural Productsmentioning

confidence: 96%

Thorough analysis of polyhalogenated compounds in ray liver samples off the coast of Rio de Janeiro, Brazil

Rosenfelder

Lehnert

Kaffarnik

et al. 2011

Environ Sci Pollut Res

View full text Add to dashboard Cite

show abstract

Section: Halogenated Natural Productsmentioning

confidence: 96%

Thorough analysis of polyhalogenated compounds in ray liver samples off the coast of Rio de Janeiro, Brazil

Rosenfelder

Lehnert

Kaffarnik

et al. 2011

Environ Sci Pollut Res

View full text Add to dashboard Cite

show abstract

“…However, the extract of P. brasiliense from Praia Rasa showed a major compound representing about 59% of the total chemicals. In fact, a recent study revealed that both these populations of P. brasiliense produce halogenated monoterpenes, but while specimens from Praia Rasa showed only one halogenated monoterpene as major metabolite, individuals from Enseada do Forno exhibited several of these compound-types (Vasconcelos et al, 2010). These results confirm the ability of P. brasiliense to synthesise linear chlorinated and brominated monoterpenes, and also that Plocamium species produce variable contents of secondary metabolites depending on the collection location as previously observed worldwide (e.g.…”

Section: Resultsmentioning

confidence: 99%

Chemical defense in the red seaweed Plocamium brasiliense: spatial variability and differential action on herbivores

Pereira

Vasconcelos

2014

Braz. J. Biol.

View full text Add to dashboard Cite

Species of Plocamium are known as prolific sources of halogenated secondary metabolites exhibiting few explored ecological roles. In this study the crude extracts from specimens of P. brasiliense collected in two distinct places, Enseada do Forno and Praia Rasa, Búzios, Estado do Rio de Janeiro, were evaluated as defense against the sea urchin Lytechinus variegatus and the crab Acanthonyx scutiformis. These specimens produce a similar amount of crude extract and also halogenated monoterpene compound-types, but individuals of P. brasiliense from Praia Rasa exhibit a major compound representing about 59% of the total chemicals. Natural concentrations of the crude extracts obtained from both specimens of P. brasiliense significantly inhibited the herbivory by the sea urchin L. variegatus, but had no significant effect on the feeding by A. scutiformis, a crab commonly associated to chemically defended host. Crude extract from P. brasiliense collected at Praia Rasa was more efficient as defense against L. variegatus than that crude extract from populations of this alga from Enseada do Forno, probably due to presence of a major secondary metabolite. These two studied population live under different environmental conditions, but they are only about 30 Km apart. However, it is impossible to affirm that environmental characteristics (abiotic or biotic) would be responsible for the difference of defensive potential found in the two populations of P. brasiliense studied here. Further genetic studies will be necessary to clarify this question and to explain why populations of a single species living in different but close locations can exhibit distinct chemicals. Keywords

show abstract

“…A number of Codium species, including C. intertextum are known to possess dimethylsulfoniopropionate (DMSP), a substance that can decrease the activity of generalist feeders over their thalli (Van Alstyne and Puglisi, 2007). Similarly, P. brasiliense possesses halogenated monoterpenes (Vasconcelos et al, 2010) and Laurencia species produces elatol (Pereira et al, 2003), both of which prevent herbivore action towards these algae (Pereira et al, 2003;Vasconcelos et al, 2009).…”

Section: Discussionmentioning

confidence: 98%

An experimental evaluation of macroalgal consumption and selectivity by nominally herbivorous fishes on subtropical rocky reefs

Mendes

Cordeiro

Ferreira

2015

Journal of Experimental Marine Biology and Ecology

View full text Add to dashboard Cite

Chemical constituents from the red alga Plocamium brasiliense (Greville) M. Howe and W.R. Taylor

Cited by 20 publications

References 10 publications

Thorough analysis of polyhalogenated compounds in ray liver samples off the coast of Rio de Janeiro, Brazil

Thorough analysis of polyhalogenated compounds in ray liver samples off the coast of Rio de Janeiro, Brazil

Chemical defense in the red seaweed Plocamium brasiliense: spatial variability and differential action on herbivores

An experimental evaluation of macroalgal consumption and selectivity by nominally herbivorous fishes on subtropical rocky reefs

Contact Info

Product

Resources

About