SciELO - Scientific Electronic Library Online

 
vol.22 número4Use of geographic information systems (GIS) to identify adequate sites for cultivation of the seaweed Gracilaria birdiae in Rio Grande do Norte, Northeastern BrazilHIV-1 Reverse Transcriptase: a potential target for marine products índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Revista Brasileira de Farmacognosia

versión impresa ISSN 0102-695X

Resumen

PEREIRA, Dinaelza Castelo; TRIGUEIRO, Thiago Gaban; COLEPICOLO, Pio  y  MARINHO-SORIANO, Eliane. Seasonal changes in the pigment composition of natural population of Gracilaria domingensis (Gracilariales, Rhodophyta). Rev. bras. farmacogn. [online]. 2012, vol.22, n.4, pp. 874-880.  Epub 05-Jun-2012. ISSN 0102-695X.  http://dx.doi.org/10.1590/S0102-695X2012005000075.

The concentrations of phycobiliproteins (phycoerythrin and phycocyanin), chlorophyll-a and total soluble proteins were determined monthly in three strains (red, green and brown) of Gracilaria domingensis (Kützing) Sonder ex Dickie, collected from natural populations on the coast of Rio Grande do Norte, Brazil. In all the strains, pigment and protein concentrations were higher in the months of less sunlight and greater nitrogen availability and decreased gradually with increased sunlight and decreased nutrient concentration. The red strain showed higher concentrations of phycoerythrin and total soluble proteins. The difference in the concentration of biochemical components over the course of the year indicates species acclimation to different environmental conditions.

Palabras llave : Gracilaria; strain; pigments; phycobilins; chlorophyll-a; proteins.

        · texto en Inglés     · pdf en Inglés