ISSN:
1573-5176
Keywords:
Delesseria sanguinea
;
cultivation
;
anticoagulant
;
cell-wall
;
polysaccharides
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Tank cultivation ofDelesseria sanguinea was investigated in order to manipulate conditions for vegetative growth and to provide biomass for the analysis of cell wall polysaccharides. Seasonality is subject to short-day photoperiodic control. Night-break or long-day conditions prevented fertility in tetrasporophytes and gametophytes and triggered outgrowth of new blades. Long-day illuminations allowed a 1% daily growth rate. Seawater temperature below 13 °C was necessary for inducing formation of new blades. Both wild and cultivated ofD. sanguinea plants contained a non gelling sulfated heteropolysaccharide composed of a galactosyl backbone branched with xylosyl residues. The hot water extract at neutral pH displayed the highest anticoagulant activity (5 μg ml-1 polysaccharide concentration in APTT clotting assay). No obvious differences were found in polysaccharide chemical composition and properties between gametophytes and sporophytes or between cultivated and wild plants.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02442460
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