Interactions between environmental variables on growth rate and carrageenan content of Solieria chordalis (Solieriaceae,Rhodophyceae) in culture |
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Authors: | Murray T Brown |
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Institution: | (1) Marine Biology and Ecotoxicology Group, Department of Biological Sciences, University of Plymouth, Plymouth, PL4 8AA, UK |
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Abstract: | Using vegetative propagules (ramuli) of the iota carrageenan producing red seaweed Solieria chordalis, a maximum growth rate of 6.8% d−1 was achieved when cultured at 20 °C and 100 μmol photon m−2 s−1 in seawater supplemented with 20 μM NO3-N or 10 μM NO3-N plus 10 μM NH4-N. Ramuli grew less well when nitrogen was supplied solely as NH
4
+
. Maximum carrageenan content was observed at the same temperature, irradiance and salinity as growth, but at lower nitrogen
concentrations. These findings are discussed in relation to results obtained from studies on other iota-carrageenan producing
carrageenophytes. |
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Keywords: | environmental interactions growth rate carrageenan Solieria seaweed |
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