Change of fatty-acid composition in plants during adaptation to hypothermia
Journal Title: Журнал ÑтреÑÑ-физиологии и биохимии - Year 2010, Vol 6, Issue 4
Abstract
The study of inter-species variability of fatty acid composition in leaf tissues of three species of medicinal plants growing in Predbaikal’ye showed that this composition has a species-specific character. In the composition of unsaturated fatty acids of all the species studied there prevail poly-unsaturated fatty acids – linoleic and linolenic, which implies high values of double bonds values (up to 2,19 in the yarrow). Along with high values of desaturatioin ratio (up to 4.7 in yarrow), this fact proves high potential of cold resistance in the species under study. The analysis of seasonal changes in the fatty acid composition of the three species of medicinal plants demonstrated that with the average daily temperature going down, regular reduction in the content of saturated fatty acids and increase in the content of unsaturated fatty acids take place. Changes in fatty acid composition of lipids and the level of ω9- and ω3-desaturases activity in leaf tissues in the course of adaptation to reduction of average daily air temperature in the plants under study were found to have inter-species differences as well. The data acquired allow to presume that high cold resistance potential in the species under study is, among other things, linked to the processes of fatty acids biosynthesis within lipids.
Authors and Affiliations
M. Zhivet’ev, I. Graskova, L. Dudareva, A. Stolbikova, V. Voinikov
Keywords
Related Articles
- EP ID EP97110
- DOI -
- Views 151
- Downloads 0
The Effects of Aluminum and Phosphorous on some of Physiological Characteristics of Brassica napus
The environmental toxicity of Aluminum causes nervous, lung and kidney disease in human body. Aluminum toxicity depends on different factors and these factors cause penetration of toxic element to environment soil. The a...
The Tebuconazole-based Protectant of Seeds “Bunker” Induces the Synthesis of Dehydrins During Cold Hardening and Increases the Frost Resistance of Wheat Seedlings
Triazole derivatives are widely used in agriculture for seed protectant of cereals against seed and soil infection. Triazole derivatives can have an effect on the biochemical and physiological functions of plants. The te...
CAROTENOID INVOLVEMENT IN THE REGULATION OF Spirodela<br /> polyrhiza (L.) Schleid RESISTANCE TO COLD SHOCK
Effect of short-time (15 sec, 5, 15, 30 min) cold stress (0,1-0,2[sup]o[/sup]C) at 0,1 μmol photons м[sup]-2 [/sup]s[sup]-1[/sup] over the Spirodela polyrhiza (L.) Schleid carotenoid composition cultivated under the labo...
Crude Oil-polluted Soil Induces Ultrastructural and Enzyme Activity Changes in the Shoot of Lentil
Plants are always under threat due to various biotic and abiotic stresses. They respond to such threats by an efficient antioxidative enzyme system such as catalase. The presence of petroleum in soil is a stressful envir...
Bioinformation and Correlation Analyses of the Expression of Genes of Protective Proteins in Arabidopsis at the Heat Stress
With use of the AtGenExpress database carried out bioinformation and correlation analyses of an expression of genes of the heat shock proteins (HSP) and PR proteins in roots, stalks and culture of cages Arabidopsis. The...