Temperature has often been considered one of the main factors influencing polyunsaturated fatty acid (PUFA) biosynthesis in oil crops, however little is still known about its effects on long chain fatty acids (C>18). The present study addressed the effects of temperature on principal FA biosynthesis in camelina (Camelina sativa (L.) Crantz), a new oil crop which has recently attracted great interest of the oleochemical industry due to its unique FA profile (PUFA>50% and C20:1~15%) and its wide environmental adaptability, as reported the European Project COSMOS (Camelina and crambe Oil as Sources of Medium-chain Oils for Specialty). Field (OF) plot trials of camelina (var. Midas, Linnaeus Plant Sciences, Canada) were established in Bologna (Italy) on three sowing dates, between spring and autumn 2015. Midas plants were also pot-grown after flowering under controlled environment (CE), setting three ranges of temperature: 24-14, 20-10 and 15-5 °C day-night. Camelina immature seeds were sampled at different developmental stages from both OF and CE experiments, and then analyzed to determine the total oil content and FA profile. Both C20:1 and C18:3 were found negatively related with increasing temperatures, but the effect of temperature on C20:1 was lower or not significant. Once determined the temporal window, expressed as growing degree day after flowering (GDD), in which temperatures were more impacting on principal FA metabolism, data from a two-year multi-location study (4 sites in Europe and 7 in Canada) were used to develop an empirical model able to predict the effect of temperature on final FA composition of camelina seeds. PUFAs contained in camelina oil resulted highly related to temperature, while C20:1 was only partially respondent. The results of this study highlight the strong relationship subsisted between growing temperature occurred in different European and Canadian regions and FA metabolism in camelina. The prediction of the final percentage of PUFAs, contained in camelina seeds many days before harvest, would allow an early evaluation of the final oil composition, thus determining its oleochemical potential value.

Prediction of Camelina FA Composition in Relation to Temperature

RIGHINI, DARIA;ZANETTI, FEDERICA;MANDRIOLI, MARA;DI GIROLAMO, GIUSEPPE;VECCHI, ANGELA;GALLINA TOSCHI, TULLIA;MONTI, ANDREA
2017

Abstract

Temperature has often been considered one of the main factors influencing polyunsaturated fatty acid (PUFA) biosynthesis in oil crops, however little is still known about its effects on long chain fatty acids (C>18). The present study addressed the effects of temperature on principal FA biosynthesis in camelina (Camelina sativa (L.) Crantz), a new oil crop which has recently attracted great interest of the oleochemical industry due to its unique FA profile (PUFA>50% and C20:1~15%) and its wide environmental adaptability, as reported the European Project COSMOS (Camelina and crambe Oil as Sources of Medium-chain Oils for Specialty). Field (OF) plot trials of camelina (var. Midas, Linnaeus Plant Sciences, Canada) were established in Bologna (Italy) on three sowing dates, between spring and autumn 2015. Midas plants were also pot-grown after flowering under controlled environment (CE), setting three ranges of temperature: 24-14, 20-10 and 15-5 °C day-night. Camelina immature seeds were sampled at different developmental stages from both OF and CE experiments, and then analyzed to determine the total oil content and FA profile. Both C20:1 and C18:3 were found negatively related with increasing temperatures, but the effect of temperature on C20:1 was lower or not significant. Once determined the temporal window, expressed as growing degree day after flowering (GDD), in which temperatures were more impacting on principal FA metabolism, data from a two-year multi-location study (4 sites in Europe and 7 in Canada) were used to develop an empirical model able to predict the effect of temperature on final FA composition of camelina seeds. PUFAs contained in camelina oil resulted highly related to temperature, while C20:1 was only partially respondent. The results of this study highlight the strong relationship subsisted between growing temperature occurred in different European and Canadian regions and FA metabolism in camelina. The prediction of the final percentage of PUFAs, contained in camelina seeds many days before harvest, would allow an early evaluation of the final oil composition, thus determining its oleochemical potential value.
8th European Symposium on Plant Lipids Book of Abstracts
23
23
Daria, Righini; Federica, Zanetti; Enrique, Martínez-Force ; Mara, Mandrioli; Giuseppe, Di Girolamo ; Angela, Vecchi; Tullia, Gallina Toschi ; Andrea, Monti
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/609635
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