期刊
INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY
卷 45, 期 -, 页码 51-57出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ibmb.2013.11.006
关键词
De novo biosynthesis; Linoleic acid; Essential fatty acid; (Z,Z)-6,9-heptadecadiene; Carpoglyphus lactis; Astigmata
资金
- Japan Society for the Promotion of Science (JSPS) [20780086, 22780106]
- Agricultural Chemical Research Foundation
- Grants-in-Aid for Scientific Research [20780086, 22380068, 24580167, 22780106] Funding Source: KAKEN
De novo biosynthesis of linoleic acid (LA) and its conversion to (Z,Z)-6,9-heptadecadiene were examined in Carpoglyphus lactis (Acarina, Carpoglyphidae). Experiments involving C-13-administration using [1-C-13]-D-glucose revealed that C-13 atoms were incorporated into LA of total lipid extracted from the mite, resulting in labeling of all even-numbered carbons. This result demonstrated that LA was produced from C-13-labeled acetyl-CoA, which is indicative of direct de novo biosynthesis. In these feeding experiments involving [1-C-13]-D-glucose, C-13 atoms were also incorporated into (Z,Z)-6,9-heptadecadiene, which is one of the major secretory components in the mite. The labeling pattern of (Z,Z)-6,9-heptadecadiene at odd-numbered carbons agreed well with that of LA after loss of the carboxyl carbon. It was concluded that the mites could stably convert LA into (Z,Z)-6,9-heptadecadiene without the dietary requirement of this essential fatty acid. (C) 2013 Elsevier Ltd. All rights reserved.
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