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Temperature effect on triacylglycerol species in seed oil from high stearic sunflower lines with different genetic backgrounds.
J Sci Food Agric. 2016 Oct; 96(13):4367-76.JS

Abstract

BACKGROUND

This study characterized the influence of temperature during grain filling on the saturated fatty acid distribution in triacylglycerol molecules from high stearic sunflower lines with different genetic backgrounds. Two growth chamber experiments were conducted with day/night temperatures of 16/16, 26/16, 26/26 and 32/26 °C.

RESULTS

In all genotypes, independently of the genetic background, higher temperatures increased palmitic and oleic acid and reduced linoleic acid concentrations. Increasing night temperature produced an increase in saturated-unsaturated-saturated species, indicating a more symmetrical distribution of saturated fatty acids. The solid fat index was more affected by temperature during grain filling in lines with high linoleic than high oleic background. Higher variations in symmetry among night temperatures were observed in lines with high oleic background, which are more stable in fatty acid composition.

CONCLUSION

The effect of temperature on triacylglycerol composition is not completely explained by its effect on fatty acid composition. Thus night temperature affects oil properties via its effects on fatty acid synthesis and on the distribution of fatty acids in the triacylglycerol molecules. © 2016 Society of Chemical Industry.

Authors+Show Affiliations

Laboratorio de Fisiología Vegetal, Unidad Integrada Facultad de Ciencias Agrarias (UNMdP), Estación Experimental Agropecuaria INTA Balcarce, Balcarce, Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.Instituto de la Grasa (CSIC), Campus Universitario Pablo de Olavide, E-41013, Seville, Spain.Instituto de la Grasa (CSIC), Campus Universitario Pablo de Olavide, E-41013, Seville, Spain.Laboratorio de Fisiología Vegetal, Unidad Integrada Facultad de Ciencias Agrarias (UNMdP), Estación Experimental Agropecuaria INTA Balcarce, Balcarce, Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.Center for Biotechnology Research, Advanta Semillas SAIC, Ruta 226 Km 60.5, 7620, Balcarce, Argentina.Center for Biotechnology Research, Advanta Semillas SAIC, Ruta 226 Km 60.5, 7620, Balcarce, Argentina.

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

26804723

Citation

Izquierdo, Natalia G., et al. "Temperature Effect On Triacylglycerol Species in Seed Oil From High Stearic Sunflower Lines With Different Genetic Backgrounds." Journal of the Science of Food and Agriculture, vol. 96, no. 13, 2016, pp. 4367-76.
Izquierdo NG, Martínez-Force E, Garcés R, et al. Temperature effect on triacylglycerol species in seed oil from high stearic sunflower lines with different genetic backgrounds. J Sci Food Agric. 2016;96(13):4367-76.
Izquierdo, N. G., Martínez-Force, E., Garcés, R., Aguirrezábal, L. A., Zambelli, A., & Reid, R. (2016). Temperature effect on triacylglycerol species in seed oil from high stearic sunflower lines with different genetic backgrounds. Journal of the Science of Food and Agriculture, 96(13), 4367-76. https://doi.org/10.1002/jsfa.7646
Izquierdo NG, et al. Temperature Effect On Triacylglycerol Species in Seed Oil From High Stearic Sunflower Lines With Different Genetic Backgrounds. J Sci Food Agric. 2016;96(13):4367-76. PubMed PMID: 26804723.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Temperature effect on triacylglycerol species in seed oil from high stearic sunflower lines with different genetic backgrounds. AU - Izquierdo,Natalia G, AU - Martínez-Force,Enrique, AU - Garcés,Rafael, AU - Aguirrezábal,Luis An, AU - Zambelli,Andrés, AU - Reid,Roberto, Y1 - 2016/03/01/ PY - 2015/07/31/received PY - 2016/01/13/revised PY - 2016/01/19/accepted PY - 2016/1/26/entrez PY - 2016/1/26/pubmed PY - 2017/5/24/medline KW - high stearic mutation KW - oil quality KW - temperature KW - triacylglycerol composition SP - 4367 EP - 76 JF - Journal of the science of food and agriculture JO - J Sci Food Agric VL - 96 IS - 13 N2 - BACKGROUND: This study characterized the influence of temperature during grain filling on the saturated fatty acid distribution in triacylglycerol molecules from high stearic sunflower lines with different genetic backgrounds. Two growth chamber experiments were conducted with day/night temperatures of 16/16, 26/16, 26/26 and 32/26 °C. RESULTS: In all genotypes, independently of the genetic background, higher temperatures increased palmitic and oleic acid and reduced linoleic acid concentrations. Increasing night temperature produced an increase in saturated-unsaturated-saturated species, indicating a more symmetrical distribution of saturated fatty acids. The solid fat index was more affected by temperature during grain filling in lines with high linoleic than high oleic background. Higher variations in symmetry among night temperatures were observed in lines with high oleic background, which are more stable in fatty acid composition. CONCLUSION: The effect of temperature on triacylglycerol composition is not completely explained by its effect on fatty acid composition. Thus night temperature affects oil properties via its effects on fatty acid synthesis and on the distribution of fatty acids in the triacylglycerol molecules. © 2016 Society of Chemical Industry. SN - 1097-0010 UR - https://www.unboundmedicine.com/medline/citation/26804723/Temperature_effect_on_triacylglycerol_species_in_seed_oil_from_high_stearic_sunflower_lines_with_different_genetic_backgrounds_ DB - PRIME DP - Unbound Medicine ER -