Fatty acid synthesis in the oil palm (Elaeis guineensis): Incorporation of acetate by tissue slices of the developing fruit |
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Authors: | Khaik-Cheang Oo Sau-Keen Teh Hun-Teik Khor Augustine S H Ong |
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Affiliation: | (1) Department of Biochemistry, University of Malaya, Kuala Lumpur, Malaysia;(2) Palm Oil Research Institute of Malaysia, Bangi, Selangor, Malaysia |
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Abstract: | Oil palm (E. guineensis) fruits at three stages of development were studied. At week 12–13 after anthesis, the endosperm had started accumulating
oil and tissue slices incorporated 1-14C] acetate into fatty acids which resembled those found in the mature endosperm. The mesocarp contained very little oil and
incorporated acetate into polar lipids. At week 16–17, the mesocarp started to accumulate oil; this was reflected in the 14C] lipid products from acetate incubation. At or just prior to this stage, an increase in the endogenous linoleic and linolenic
acid content and the increase in fruit size indicated cellular growth in the mesocarp tissue. At week 20–21 the fruit was
ripe, and both endosperm and mesocarp tissues were filled with storage oil. 14C] Fatty acids synthesized from acetate by mesocarp slices at this stage were the same as the endogenous storage fatty acids
in bothE. guineensis andE. oleifera. A very weak fatty acid synthesizing activity was seen in the mature endosperm, but the products had no relationship to the
storage lipid. |
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