Algal Chemistry

Almost a third of the reported brown algal chemistry comes from a single genus, Dictyota, which has elaborated a wealth of terpenes (>250) (Munro and Blunt 2005). Diterpenes dominate Dictyota chemistry and are typically di- and tricyclized, as seen in dictyol E (Fig. 1.6a) (Danise et al. 1977), amijiol (Fig. 1.6b) (Ochi et al. 1980), Fig. 1.6c (Tringali et al. 1984), and dictyoxetane (Fig. 1.6d) (Pullaiah et al. 1985). 

IV. Indirect Effects of Algal Chemistry Associational Defenses, Mutualisms,... 

IV. INDIRECT EFFECTS OF ALGAL CHEMISTRY ASSOCIATIONAL DEFENSES, MUTUALISMS, AND SHARED DOOM... 

Algal chemistry has likely promoted the evolution of more specific associations as well. For example, the tropical amphipod Pseudamphithoides incurvaria carries around a domicile... 

BraynerCoradin, T., Fievet-Vincent, F., Livage, J. and Fievet, F. (2005) Algal polysaccharide capsule-templated growth of magnetic nanoparticles. New Journal of Chemistry, 29,... 

It is well established that the principal source of secondary metabolites in marine molluscs resides in the sometimes selective concentration of chemicals contained in their food. The chemical connection between molluscan predator and its algal or invertebrate diet has been confirmed as a result of many investigations of the chemistry of herbivorous [6] and carnivorous [3] molluscs and their dietary sources. However, the assumption often reported, as in a recent review [7], that marine molluscs invariably obtain their metabolites from dietary sources, should be regarded as an oversimplification. In fact, active biosynthesis of secondary metabolites has been ascertained in several cases, as documented here. 

The Chemistry of Gamete Attraction Chemical Structures, Biosynthesis, and (A)biotic Degradation of Algal Pheromones... 

The brown algal order Fucales accounts for just over a third of known chemistry, with the genus Cystoseira accounting for more than 100 reported structures (Munro and Blunt 2005). The compounds are primarily prenylated quinones and hydroqui-nones, ranging from simple and linear to often complex and polycyclic forms as seen in cystoketal (sis to ke tal) (Fig. 1.61) (Amico et al. 1984) from C. balearica and from C. stricta (Fig. 1.6m)[B2] (Amico et al. 1987). 

Malin G (1996) The role of DMSP and DMS in the global sulfur cycle and climate regulation. In Kiene RP, Visscher P, Keller M, Kirst GO (eds) Biological and environmental chemistry of DMSP and related sulfonium compounds. Plenum, New York, pp 177-189 Malin G (1997) Sulphur, climate and the microbial maze. Nature 387 857-859 Malin G, Kirst GO (1997) Algal production of dimethyl sulfide and its atmospheric role. J Phycol 33 889-896... 

Ista LK, Callow ME, Finlay JA, Coleman SE, Nolasco AC, Simons RH, Callow JA, Lopez GP (2004) Effect of substratum surface chemistry and surface energy on attachment of marine bacteria and algal spores. Appl Environ Microbiol 70 4151 4157 Jaenicke L, MamerFJ (1995) Lurlene, the sexual pheromone ofthe green flagellate Chlamydomonas allensworthii. Liebigs Ann 1995 1343-1345... 

Latasa, M., R.R. Bidigare, M.E. Ondrusek, and M.C. Kennicutt II. 1996. HPLC analysis of algal pigments A comparison exercise among laboratories and recommendations for improved analytical performance. Marine Chemistry 51 315-324. 

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