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3. Los invertebrados marinos como fuente de ácidos grasos poliinsaturados de cadena larga omega-3

Author

Navarro, Juan Carlos, Ribes-Navarro, Alberto, Villena-Rodríguez, A., Bainour, Khalida, Ramos Llorens, M., Hontoria, Francisco, Monroig, Óscar, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), and European Commission

Abstract

Trabajo presentado en el XVIII Congreso Nacional de Acuicultura, celebrado en Cádiz (España) del 21 al 24 de octubre de 2022., [EN]: Certain marine invertebrates have some capacity to synthesize long-chain polyunsaturated fatty acids (LC-PUFA), essential nutrients for animals. Such ability makes them as ideal candidates to apply principles of Circular Economy through which waste materials of low nutritional value can be used for the production of high value biomass that can be utilized as aquafeed ingredients. The molecular and functional characterization of enzymes involved in the biosynthesis of LC-PUFA is a key step to establish the potential of aquatic invertebrates to apply the above strategy. Among its objectives, the IMPROMEGA project aims to explore the LC-PUFA biosynthetic capacity of polychaetes and crustaceans like gammarids and copepods. The most relevant results are presented herein., [ES]: Algunos invertebrados marinos tienen la capacidad para la síntesis de ácidos grasos poliinsaturados de cadena larga, esenciales para los animales. Ello los convierte en candidatos ideales para aplicar los principios de la Economía Circular, a través del reciclaje de materiales de desecho de bajo valor nutricional, generando biomasa de alto valor nutritivo susceptible de ser utilizada en alimentación acuícola. La caracterización molecular y funcional de enzimas implicados en la síntesis de ácidos grasos es el primer paso para definir el potencial de los diferentes organismos como generadores netos de ácidos grasos esenciales. El proyecto IMPROMEGA contempla esta caracterización en poliquetos, así como crustáceos gamáridos y copépodos. Se presentan aquí los resultados más destacados., Proyecto IMPROMEGA RTI2018-095119-B-I00 financiado por MCIN/ AEI /10.13039/501100011033/ y por FEDER Una manera de hacer Europa.

Published
2022

4. Unraveling the potential of marine invertebrates as a source of omega-3 long-chain polyunsaturated fatty acids for aquaculture

Author

Navarro, Juan Carlos, Ribes-Navarro, Alberto, Alberts-Hubatsh, H., Hagemann, Andreas, Boyen, Jens, Afoncheva, Sofía, Villena, Andrea, Ramos Llorens, M., Bainour, Khalida, Hontoria, Francisco, Troch, Marleen De, Standal, Inger B., Kabeya, Naoki, Malzahn, Arne M., and Monroig, Óscar

Abstract

Trabajo presentado en Aquaculture Europe, celebrado en Rimini (Italia), del 27 al 30 de septiembre de 2022.

Published
2022

5. Los invertebrados marinos como fuente de ácidos grasos poliinsaturados de cadena larga omega-3

Author

Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), European Commission, Navarro, Juan Carlos, Ribes-Navarro, Alberto, Villena-Rodríguez, A., Bainour, Khalida, Ramos Llorens, M., Hontoria, Francisco, Monroig, Óscar, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), European Commission, Navarro, Juan Carlos, Ribes-Navarro, Alberto, Villena-Rodríguez, A., Bainour, Khalida, Ramos Llorens, M., Hontoria, Francisco, and Monroig, Óscar

Abstract

[EN]: Certain marine invertebrates have some capacity to synthesize long-chain polyunsaturated fatty acids (LC-PUFA), essential nutrients for animals. Such ability makes them as ideal candidates to apply principles of Circular Economy through which waste materials of low nutritional value can be used for the production of high value biomass that can be utilized as aquafeed ingredients. The molecular and functional characterization of enzymes involved in the biosynthesis of LC-PUFA is a key step to establish the potential of aquatic invertebrates to apply the above strategy. Among its objectives, the IMPROMEGA project aims to explore the LC-PUFA biosynthetic capacity of polychaetes and crustaceans like gammarids and copepods. The most relevant results are presented herein., [ES]: Algunos invertebrados marinos tienen la capacidad para la síntesis de ácidos grasos poliinsaturados de cadena larga, esenciales para los animales. Ello los convierte en candidatos ideales para aplicar los principios de la Economía Circular, a través del reciclaje de materiales de desecho de bajo valor nutricional, generando biomasa de alto valor nutritivo susceptible de ser utilizada en alimentación acuícola. La caracterización molecular y funcional de enzimas implicados en la síntesis de ácidos grasos es el primer paso para definir el potencial de los diferentes organismos como generadores netos de ácidos grasos esenciales. El proyecto IMPROMEGA contempla esta caracterización en poliquetos, así como crustáceos gamáridos y copépodos. Se presentan aquí los resultados más destacados.

Published
2022

7. Elongation capacity of polyunsaturated fatty acids in the annelid Platynereis dumerilii .

Author

Ramos-Llorens M, Bainour K, Adelmann L, Hontoria F, Navarro JC, Raible F, and Monroig Ó

Subjects
Animals, Polychaeta metabolism, Polychaeta genetics, Acetyltransferases metabolism, Acetyltransferases genetics, Annelida genetics, Annelida metabolism, Fatty Acids, Unsaturated metabolism, Fatty Acids, Unsaturated biosynthesis, Phylogeny, Fatty Acid Elongases metabolism, Fatty Acid Elongases genetics
Abstract

Elongation of very long-chain fatty acid (Elovl) proteins plays pivotal functions in the biosynthesis of the physiologically essential long-chain polyunsaturated fatty acids (LC-PUFA). Polychaetes have important roles in marine ecosystems, contributing not only to nutrient recycling but also exhibiting a distinctive capacity for biosynthesizing LC-PUFA. To expand our understanding of the LC-PUFA biosynthesis in polychaetes, this study conducted a thorough molecular and functional characterization of Elovl occurring in the model organism Platynereis dumerilii . We identify six Elovl in the genome of P. dumerilii . The sequence and phylogenetic analyses established that four Elovl, identified as Elovl2/5, Elovl4 (two genes) and Elovl1/7, have putative functions in LC-PUFA biosynthesis. Functional characterization confirmed the roles of these elongases in LC-PUFA biosynthesis, demonstrating that P. dumerilii possesses a varied and functionally diverse complement of Elovl that, along with the enzymatic specificities of previously characterized desaturases, enables P. dumerilii to perform all the reactions required for the biosynthesis of the LC-PUFA. Importantly, we uncovered that one of the two Elovl4-encoding genes is remarkably long in comparison with any other animals' Elovl, which contains a C terminal KH domain unique among Elovl. The distinctive expression pattern of this protein in photoreceptors strongly suggests a central role in vision.

Published
2024
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