Lipoxygenase-dependent degradation of storage lipids

Feussner, I and Kühn, H and Wasternack, C (2001) Lipoxygenase-dependent degradation of storage lipids. Trends in Plant Science, 6 (6). pp. 268-273.

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Oilseed germination is characterized by the mobilization of storage lipids as a carbon source for the germinating seedling. In spite of the importance of lipid mobilization, its mechanism is only partially understood. Recent data suggest that a novel degradation mechanism is initiated by a 13-lipoxygenase during germination, using esterified fatty acids specifically as substrates. This 13-lipoxygenase reaction leads to a transient accumulation of ester lipid hydroperoxides in the storage lipids, and the corresponding oxygenated fatty acid moieties are preferentially removed by specific lipases. The free hydroperoxy fatty acids are subsequently reduced to their hydroxy derivatives, which might in turn undergo β-oxidation.

Item Type: Article
Additional Information: We are grateful to Christine Kaufmann for the preparation of the figures, and for the constructive help of four anonymous reviewers. Our work was supported by the Deutsche Forschungsgemeinschaft. This article is dedicated to Prof. Helmut Kindl (Marburg, Germany) and Prof. Bernt Gerhardt (Münster, Germany) on the occasion of their retirement, who initiated and stimulated the work presented in this article.
Uncontrolled Keywords: germination; lipid peroxidation; lipid body; storage lipid; mobilisation
Author Affiliation: Dept Molecular Cell Biology, Institute of Plant Genetics and Crop Plant Research, D-06466 Gatersleben, Corrensstr. 3, Germany
Subjects: Crop Improvement > Genetics/Genomics
Divisions: General
Depositing User: Mr Siva Shankar
Date Deposited: 11 Apr 2012 07:58
Last Modified: 11 Apr 2012 07:58
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