Abstract
A study to assess which environmental or developmental factors predominate in the biosynthesis of lipids of Laminaria japonica Aresch. blades was undertaken by means of 14C-labelling technique. In experiment 1, kelp blades at different growth stages were collected in different cultural seasons. In experiment 2, kelp blades of different sizes and maturity cultured simultaneously for two months in the same sea area were collected at the same time.
The following results were obtained. In experiment 1, the 14C-incorporation into whole lipids was lowest in juvenile blades collected at the end of autumn and highest in blades of middle size collected in winter. However, the highest counts were incorporated in PC among complex lipid classes from all size classes of blades in both experiments 1 and 2. In experiment 2, 14C-incorporation patterns of individual lipid classes were characteristically different depending on the sizes of blades even under the same cultural condition. Thus, the biosynthesis of lipids in this kelp seems to be affected essentially by developmental factors.
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Abbreviations
- Comp. lip.:
-
complex lipid
- FA:
-
non-esterified fatty acids
- Fucost:
-
fucosterol
- DG:
-
diacyl-glycerol
- DGDG:
-
digalactosyldiacylglycerol
- MG:
-
monoacylglycerol
- MGDG:
-
monogalactosyldiacyl-glycerol
- NL:
-
neutral lipids
- PC:
-
phosphatidylcholine
- PE:
-
phosphatidylethanolamine
- PG:
-
phosphati-dylglycerol
- PI:
-
phosphatidyl inositol
- PS:
-
phosphatidylserine
- SQDG:
-
sulphoquinovosyldiacyl glycerol
- TG:
-
triacylglycerol
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© 1993 Springer Science+Business Media Dordrecht
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Honya, M., Kashiwabara, Y., Nisizawa, K. (1993). Incorporation of 14C-radioactivity into lipid classes at different maturity of Laminaria japonica Aresch. cultured under natural and partially controlled conditions. In: Chapman, A.R.O., Brown, M.T., Lahaye, M. (eds) Fourteenth International Seaweed Symposium. Developments in Hydrobiology, vol 85. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-1998-6_84
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DOI: https://doi.org/10.1007/978-94-011-1998-6_84
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-4882-8
Online ISBN: 978-94-011-1998-6
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