Deciphering the molecular adaptation of the king scallop (Pecten maximus) to heat stress using transcriptomics and proteomics

BMC Genomics

Research Article

Lloyd S. Peck¹  Melody S. Clark¹  Michael AS Thorne¹  Romain Lavaud²  Jonathan Flye-Sainte-Marie²  Fred Jean²  Vianney Pichereau²  Sébastien Artigaud²  Joëlle Richard² 

[1] British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, CB3 0ET, Cambridge, UK;Laboratoire des Sciences de l’Environnement Marin, LEMAR UMR 6539 CNRS/UBO/IRD/Ifremer, Université de Brest (UBO), Institut Universitaire Européen de la Mer, 29280, Plouzané, France;

关键词: Marine biology;    Metabolism;    DNA repair;    Transcription regulation;    Apoptosis;    Energy reserves;   

DOI  :  10.1186/s12864-015-2132-x

 received in 2015-06-20, accepted in 2015-10-22,  发布年份 2015

来源: Springer

【 摘 要 】

BackgroundThe capacity of marine species to survive chronic heat stress underpins their ability to survive warming oceans as a result of climate change. In this study RNA-Seq and 2-DE proteomics were employed to decipher the molecular response of the sub-tidal bivalve Pecten maximus, to elevated temperatures.ResultsIndividuals were maintained at three different temperatures (15, 21 and 25 °C) for 56 days, representing control conditions, maximum environmental temperature and extreme warming, with individuals sampled at seven time points. The scallops thrived at 21 °C, but suffered a reduction in condition at 25 °C. RNA-Seq analyses produced 26,064 assembled contigs, of which 531 were differentially expressed, with putative annotation assigned to 177 transcripts. The proteomic approach identified 24 differentially expressed proteins, with nine identified by mass spectrometry. Network analysis of these results indicated a pivotal role for GAPDH and AP-1 signalling pathways. Data also suggested a remodelling of the cell structure, as revealed by the differential expression of genes involved in the cytoskeleton and cell membrane and a reduction in DNA repair. They also indicated the diversion of energetic metabolism towards the mobilization of lipid energy reserves to fuel the increased metabolic rate at the higher temperature.ConclusionsThis work provides preliminary insights into the response of P. maximus to chronic heat stress and provides a basis for future studies examining the tipping points and energetic trade-offs of scallop culture in warming oceans.

【 授权许可】

CC BY   
© Artigaud et al. 2015