Transcriptional Response in the Digestive Gland of the King Scallop (Pecten maximus) After the Injection of Domoic Acid

Toxins

Juan Blanco¹  AntonioJ. Pazos²  Pablo Ventoso²  JoséL. Sánchez²  M.Luz Pérez-Parallé²  JuanC. Triviño³ 

[1] Centro de Investigacións Mariñas, Xunta de Galicia, Pedras de Corón s/n Apdo. 13, 36620 Vilanova de Arousa, Spain;Departamento de Bioquímica y Biología Molecular, Instituto de Acuicultura, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain;Sistemas Genómicos, Ronda G. Marconi 6, Paterna, 46980 Valencia, Spain;

关键词: amnesic shellfish poisoning (ASP);    bivalves;    RNA-seq;    transcriptome;    differential expression;    DEGs;   

DOI  :  10.3390/toxins13050339

来源: DOAJ

【 摘 要 】

Some diatom species of the genus Pseudo-nitzschia produce the toxin domoic acid. The depuration rate of domoic acid in Pecten maximus is very low; for this reason, king scallops generally contain high levels of domoic acid in their tissues. A transcriptomic approach was used to identify the genes differentially expressed in the P. maximus digestive gland after the injection of domoic acid. The differential expression analysis found 535 differentially expressed genes (226 up-regulated and 309 down-regulated). Protein–protein interaction networks obtained with the up-regulated genes were enriched in gene ontology terms, such as vesicle-mediated transport, response to stress, signal transduction, immune system process, RNA metabolic process, and autophagy, while networks obtained with the down-regulated genes were enriched in gene ontology terms, such as response to stress, immune system process, ribosome biogenesis, signal transduction, and mRNA processing. Genes that code for cytochrome P450 enzymes, glutathione S-transferase theta-1, glutamine synthase, pyrroline-5-carboxylate reductase 2, and sodium- and chloride-dependent glycine transporter 1 were among the up-regulated genes. Therefore, a stress response at the level of gene expression, that could be caused by the domoic acid injection, was evidenced by the alteration of several biological, cellular, and molecular processes.

【 授权许可】

Unknown