Diapause induces remodeling of the fatty acid composition of membrane and storage lipids in overwintering larvae of Ostrinia nubilalis, Hubn. (Lepidoptera: Crambidae)

Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
Elvira L VukašinovićGordana Grubor-Lajšić

Abstract

Seasonal changes in the FA composition of triacylglycerols and phospholipids prepared from the whole bodies of non-diapausing and diapausing fifth instar larvae of Ostrinia nubilalis, Hubn. (Lepidoptera: Crambidae) were determined to evaluate the role of these lipids in diapause. Substantial changes in the FA composition of triacylglycerols and phospholipids were triggered by diapause development. This led to a significant increase in the overall FA unsaturation (UFAs/SFAs ratio), attributable to an increase in the relative proportion of MUFAs and the concomitant decrease in PUFAs and SFAs. In triacylglycerols, the significant changes in the FAs composition are the result of an increase in the relative proportions of MUFAs, palmitoleic acid (16:1n-7) and oleic acid (18:1n-9), and a concomitant reduction in the composition of SFAs and PUFAs, mainly palmitic acid (16:0) and linoleic acid (18:2n-6), respectively. Changes in the composition of phospholipids were more subtle with FAs contributing to the overall increase of FA unsaturation. Differential scanning calorimetry (DSC) analysis revealed that the melt transition temperatures of total lipids prepared from whole larvae, primarily attributable to the triacylglycerol component,...Continue Reading

References

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Jul 2, 2003·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·Vladimír KostálPetr Simek
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May 25, 2013·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·Elvira L VukašinovićGordana Grubor-Lajšić
May 3, 2014·The Journal of Experimental Biology·Katie E MarshallBrent J Sinclair

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Citations

Apr 18, 2015·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·Željko D PopovićVladimír Koštál
Sep 12, 2013·PloS One·Maud V P CharronPauline Ezanno
Jan 19, 2019·Development, Growth & Differentiation·Tao JiangXingjia Shen
Apr 27, 2019·Biology Open·Zhenkai LiuXingyao Zhang
Jun 3, 2017·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·Elvira L VukašinovićDuško P Blagojević
May 17, 2018·Current Opinion in Insect Science·Brad S CoatesThomas W Sappington

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