title: Effect of photon flux density and temperature on the production of halogenated monoterpenes by Plocamium cartilagineum (Plocamiaceae, Rhodophyta).
abstract: The effect of different photon flux densities (PFD) and temperatures on the relative growth rate (RGR) and the concentration of three halogenated monoterpenes in samples of Plocamium cartilagineum L.( Dixon), a marine alga (Rhodophyceae), were studied. The highest RGR (22.8 +/- 0.04 d(-1)) was obtained at 15 degreebC and 41 ,mol m(-2) s)(-1) of PFD and the lowest (18.0 +/- 0.12 d(-1)) was obtained at 18 degrees C and 120 micromol m(-2) s(-1). The different temperatures and light used in assays did not affect significantly the production of organic compounds. The production of mertensene and violacene was not affected significantly. However, compound 1 reached the highest concentration at 15 degrees C and 65 micromol m(-2) s(-1)). The relationship between growth and production of monoterpenes of P. cartilagineum and the effect of temperature and the PFD were analyzed.
authors.affiliation: Facultad de Ciencias del Mar, Universidad Católica del Norte, Coquimbo, Chile.
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Palma
authors.forename: Mario
authors.initials: M
authors.lastname: Edding
authors.forename: Juana
authors.initials: J
authors.lastname: Rovirosa
authors.forename: Aurelio
authors.initials: A
authors.lastname: San-Martín
authors.forename: Victor H
authors.initials: VH
authors.lastname: Argandoña
mesh_terms: D006846:Hydrocarbons, Halogenated / Q000378:metabolism*; D039821:Monoterpenes / Q000737:chemistry / Q000378:metabolism*; D011522:Protons; D000461:Rhodophyta / Q000378:metabolism* / Q000528:radiation effects; D013696:Temperature; D013816:Thermodynamics
chemical_list: D006846:Hydrocarbons, Halogenated; D039821:Monoterpenes; D011522:Protons