SciELO - Scientific Electronic Library Online

 
vol.36 número2Seasonal testicular changes in Dendropsophus minutus Peters, 1872 (Anura, Hylidae) índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

  • No hay articulos citadosCitado por SciELO

Links relacionados

Compartir


Biocell

versión impresa ISSN 0327-9545

Resumen

VEGA, Israel A. et al. A study of chlorophyll-like and phycobilin pigments in the C endosymbiont of the apple- snail Pomacea canaliculata. Biocell [online]. 2012, vol.36, n.2, pp.47-55. ISSN 0327-9545.

Pigments present in the brown-greenish C morph of an intracellular endosymbiont of Pomacea canaliculata were investigated. Acetone extracts of the endosymbiotic corpuscles showed an absorption spectrum similar to that of chlorophylls. Three fractions obtained from silica gel column chromatography of the acetone extracts (CI, CII and CIII), were studied by positive ion fast atom bombardment-mass spectrometry (FAB-MS) and hydrogen-nuclear magnetic resonance (H-NMR). Results indicated the presence of (1) a sterol in the yellow colored CI fraction; (2) a mixture of pheophorbides a and b in the major green fraction, CII; and (3) a modified pheophorbide a in the smaller green fraction, CIII. Aqueous extracts of the C endosymbiont did not show evidence of the occurrence of C-phycocyanin, allophycocyanin or phycoerithrin (light absorption, fluorescence emission, and electrophoresis of the protein moieties) while cyanobacterial cells (Nostoc sp.) showed evidence of C-phycocyanin and allophycocyanin. The possible phylogenetic and functional significance of the pigments present in the C endosymbiont is discussed.

Palabras clave : Symbiosis; Cyanobacteria; Chloroplast; Photosynthetic pigments; Phylogeny.

        · texto en Inglés     · Inglés ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons