Premium
Spectrofluorometric Applications in Studying Macroalgal Exudates *
Author(s) -
Dujmov Jozo,
Sučević Perica,
Antolić Boris
Publication year - 1996
Publication title -
marine ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.668
H-Index - 58
eISSN - 1439-0485
pISSN - 0173-9565
DOI - 10.1111/j.1439-0485.1996.tb00523.x
Subject(s) - algae , macrophyte , botany , fluorescence , dominance (genetics) , gracilaria , environmental chemistry , biology , chemistry , ecology , physics , biochemistry , quantum mechanics , gene
. In this paper we present a one‐year investigation on the fluorescence characteristics of released products of selected Adriatic seaweeds. The technique chosen was UV‐fluorescence spectroscopy with the synchronous mode, which involves the stepping of the excitation and emission monochromators. The five species, of representative macrophytes, Cystoseira compressa, Dictyopreris polypodioides, Gracilaria bursapastoris, Pterocladia capillacea , and Ulva rigida , were chosen on the basis of their dominance in the plant communities typical for the area near Split ‐ Central Adriatic. Our results suggest that macroalgal‐related dissolved fluorescent matter can be categorized into two distinct groups of fluorescing compounds with the following excitation wavelengths: one from 320–360 nm, probably for compounds with 2 fused aromatic rings, and another from 360–420 nm, corresponding with 3 & 4 fused rings. The contribution of aromatics with 2 and with 3 & 4 rings was very similar in the brown algae Cysroseira compressa and Dictyopteris polypodioides , while in the red algae Gracilaria bursapastoris and Pterocludia capillacea as well in the green alga Ulva rigida the group with 2 rings dominated.