| qualitative and quantitative study of wound healing processes in the coelenterate, plexaurella fusifera: spatial, temporal, and environmental (light attenuation) influences. | following injury, the caribbean soft coral, plexaurella fusifera, forms an epithelial front containing amoebocytes and zooxanthellae, a photosynthetic endosymbiont. amoebocytes may be responsible for extruding the connective mesogleal fibers necessary for regeneration of tissue and zooxanthellae may provide the energy for repair. this study examined the effects of time, space, and environment (light attenuation) on wound healing in this coral species and quantitatively confirmed the increase of ... | 1999 | 10222188 |
| new acyclic sesquiterpenes and norsesquiterpenes from the caribbean gorgonian plexaurella grisea. | the gorgonian plexaurella grisea from punta cana, dominican republic, contains five new acyclic sesquiterpenes, (3e,5e)-3,7,11-trimethyl-9-oxododeca-1,3,5-triene (3), (3z,5e)-3,7,11-trimethyl-9-oxododeca-1,3,5-triene (4), (3e)-6-acetoxy-3,11-dimethyl-7-methylidendodeca-1,3,10-triene (5), (3e,5e)-7-hydroxy-3,7,11-trimethyldodeca-1,3,5,10-tetraene (6), and (3e,5e,9e)-8,11-diacetoxy-3,7,11-trimethyldodeca-1,3,5,9-tetraene (7), and two new linear norsesquiterpenes, (2e,4e,7z)-2,6,10-trimethylundeca- ... | 2001 | 11325216 |
| structure and cytotoxicity of new polyhydroxylated sterols from the caribbean gorgonian plexaurella grisea. | the gorgonian plexaurella grisea contains the new steroids 9-hydroxygorgosterol (1), 9,11 alpha,14-trihydroxygorgosterol (2), 5 beta,6 beta-epoxyergost-24(28)-ene-3 beta,7 beta-diol (3), ergost-24(28)-ene-3 beta,5 alpha,6 beta,7 beta-tetrol (4), an unseparable 1:1 mixture of the epimers (25r) and (25s)-26-acetoxy-3 beta,5 alpha-dihydroxyergost-24(28)-en-6-one (5/6), and seven related, known compounds (7-13). the structures of these new compounds were defined by spectroscopic analysis. all the co ... | 2001 | 11711118 |
| phylogenetic hypotheses of gorgoniid octocorals according to its2 and their predicted rna secondary structures. | gorgoniid octocorals taxonomy (cnidaria; octocorallia; gorgoniidae) includes diagnostic characters not well defined at the generic level, and based on the family diagnosis some species could be classified in either gorgoniidae or plexauridae. in this study, we used sequences from the internal transcribed spacer 2 (its2) and their predicted rna secondary structure to both correct the alignment and reconstruct phylogenies using molecular morphometrics for 24 octocorals mostly from the atlantic. it ... | 2007 | 17254805 |
| the effect of bleaching on the terpene chemistry of plexaurella fusifera: evidence that zooxanthellae are not responsible for sesquiterpene production. | the close association between marine invertebrates, zooxanthellae, and numerous bacteria gives rise to the question of the identity of the actual producer of secondary metabolites. in fall of 2005, a widespread bleaching event occurred throughout the caribbean sea in which some colonies of the gorgonian coral plexaurella fusifera bleached. this study investigated whether zooxanthellae play a key role in the biosynthesis of secondary metabolite terpenes from p. fusifera. the extent of bleaching w ... | 2008 | 18421429 |
| sesquiterpene variability in the gorgonian genus plexaurella. | gorgonian corals have proven to be a prolific source of a variety of biologically active terpenes. corals of the genus plexaurella are known to be the source of a diverse array of sesquiterpenes, and past reports have indicated variability in terpene content. this study involved an examination of the terpene chemistry of 109 individuals of five of the six known species of this genus in an attempt to identify links between sesquiterpene chemistry and species, location and depth. the data indicate ... | 2009 | 19358896 |