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7195514 
Journal Article 
The composition of fatty acids in the endosperm and embryo lipids of Pinus sibirica and P-sylvestris seeds 
Makarenko, SP; Konenkina, TA; Putilina, TE; Donskaya, LI; Muzalevskaya, OV; , 
2008 
1 
Russian Journal of Plant Physiology
ISSN: 1021-4437
EISSN: 1608-3407 
PLEIADES PUBLISHING INC 
MOSCOW 
480-485 
WOS:000257592800008 
The fatty acid (FA) composition of storage lipids in the seed endosperms and embryos of two pine species, Pinus sibirica and P. sylvestris, and possible biosynthetic pathways of these acids were studied by the GLC method. Linoleic acid predominated in the embryo and endosperm lipids of both P. sibirica (43.5 and 42.6%) and P. sylvestris (44.8 and 46.8%); this was evidently determined by a high expression of the gene encoding stearoyl-Delta 9 acyl-lipid desaturase and the fad2 gene encoding microsomal omega 6 acyl-lipid desaturase. P. sibirica lipids of the embryo and endosperm contained more oleic acid (22.0 and 24.0%, respectively) than corresponding P. sylvestris lipids (18.7 and 14%). Storage lipids of conifer seeds contain Delta 5-unsaturated FAs: taxoleic (18:2 Delta 5,9), ephedrenic (18:2 Delta 5,11), pinoleenic (18:3 Delta 5,9,12), skiadonic (18:3 Delta 5,11, 14), and coniferonic (18:4 Delta 5,9,12,15). In the endosperm and embryos of P. sylvestris, the content of pinolenic acid was higher (22.1 and 19.6%) than in P. sibirica seeds (19.1 and 18.6%).