An. Glazer et al., SALINITY TOLERANCE, BILIPROTEINS, AND FLORIDOSIDE CONTENT OF COMPSOPOGON COERULEUS (RHODOPHYTA), Journal of phycology, 30(3), 1994, pp. 457-461
The freshwater red alga Compsopogon coeruleus (Balbis) Montagne is cap
able of growing and reproducing in salinities up to 35 ppt. Increased
accumulation of floridoside (D-galactopyranosyl glycerol) parallels in
crease in salinity. Compsopogon phycobilisomes contain an unusual B-ph
ycoerythrin completely Lacking in phycourobilin chromophores, but with
a pigmented gamma subunit. The alpha, beta, and gamma subunits of thi
s phycoerythrin all carry phycoerythrobilins. These results suggest th
at C. coeruleus is secondarily adapted to freshwater from marine habit
ats.