PMID- 32816959 OWN - NLM STAT- MEDLINE DCOM- 20210618 LR - 20210618 IS - 1477-9145 (Electronic) IS - 0022-0949 (Print) IS - 0022-0949 (Linking) VI - 223 IP - Pt 20 DP - 2020 Oct 15 TI - High temperature induces transcriptomic changes in Crassostrea gigas that hinder progress of ostreid herpesvirus (OsHV-1) and promote survival. LID - 10.1242/jeb.226233 [doi] LID - jeb226233 AB - Of all environmental factors, seawater temperature plays a decisive role in triggering marine diseases. Like fever in vertebrates, high seawater temperature could modulate the host response to pathogens in ectothermic animals. In France, massive mortality of Pacific oysters, Crassostrea gigas, caused by the ostreid herpesvirus 1 (OsHV-1) is markedly reduced when temperatures exceed 24 degrees C in the field. In the present study we assess how high temperature influences the host response to the pathogen by comparing transcriptomes (RNA sequencing) during the course of experimental infection at 21 degrees C (reference) and 29 degrees C. We show that high temperature induced host physiological processes that are unfavorable to the viral infection. Temperature influenced the expression of transcripts related to the immune process and increased the transcription of genes related to the apoptotic process, synaptic signaling and protein processes at 29 degrees C. Concomitantly, the expression of genes associated with catabolism, metabolite transport, macromolecule synthesis and cell growth remained low from the first stage of infection at 29 degrees C. Moreover, viral entry into the host might have been limited at 29 degrees C by changes in extracellular matrix composition and protein abundance. Overall, these results provide new insights into how environmental factors modulate host-pathogen interactions. CI - (c) 2020. Published by The Company of Biologists Ltd. FAU - Delisle, Lizenn AU - Delisle L AD - Ifremer, Universite de Brest, CNRS, IRD, LEMAR, F-29280 Plouzane, France. AD - Cawthron Institute, 98 Halifax Street East, Private Bag 2, Nelson 7042, New Zealand. FAU - Pauletto, Marianna AU - Pauletto M AD - Department of Comparative Biomedicine and Food Science, University of Padova, Viale dell'Universita 16, 35020 Legnaro, Padova, Italy. FAU - Vidal-Dupiol, Jeremie AU - Vidal-Dupiol J AD - IHPE, Universite de Montpellier, CNRS, Ifremer, Universite de Perpignan, Via Domitia, F-34095 Montpellier, France. FAU - Petton, Bruno AU - Petton B AD - Ifremer, Universite de Brest, CNRS, IRD, LEMAR, F-29280 Plouzane, France. FAU - Bargelloni, Luca AU - Bargelloni L AD - Department of Comparative Biomedicine and Food Science, University of Padova, Viale dell'Universita 16, 35020 Legnaro, Padova, Italy. FAU - Montagnani, Caroline AU - Montagnani C AD - IHPE, Universite de Montpellier, CNRS, Ifremer, Universite de Perpignan, Via Domitia, F-34095 Montpellier, France. FAU - Pernet, Fabrice AU - Pernet F AD - Ifremer, Universite de Brest, CNRS, IRD, LEMAR, F-29280 Plouzane, France. FAU - Corporeau, Charlotte AU - Corporeau C AD - Ifremer, Universite de Brest, CNRS, IRD, LEMAR, F-29280 Plouzane, France. FAU - Fleury, Elodie AU - Fleury E AUID- ORCID: 0000-0002-8546-6680 AD - Ifremer, Universite de Brest, CNRS, IRD, LEMAR, F-29280 Plouzane, France elodie.fleury@ifremer.fr. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20201015 PL - England TA - J Exp Biol JT - The Journal of experimental biology JID - 0243705 SB - IM MH - Animals MH - *Crassostrea/genetics MH - France MH - *Herpesviridae/genetics MH - Temperature MH - Transcriptome PMC - PMC7578350 OTO - NOTNLM OT - Anti-viral molecular pathway OT - Host-pathogen interaction OT - Marine disease OT - OsHV-1 OT - Resistance OT - Temperature COIS- Competing interestsThe authors declare no competing or financial interests. EDAT- 2020/08/21 06:00 MHDA- 2021/06/22 06:00 PMCR- 2020/10/15 CRDT- 2020/08/21 06:00 PHST- 2020/04/06 00:00 [received] PHST- 2020/08/07 00:00 [accepted] PHST- 2020/08/21 06:00 [pubmed] PHST- 2021/06/22 06:00 [medline] PHST- 2020/08/21 06:00 [entrez] PHST- 2020/10/15 00:00 [pmc-release] AID - jeb.226233 [pii] AID - JEB226233 [pii] AID - 10.1242/jeb.226233 [doi] PST - epublish SO - J Exp Biol. 2020 Oct 15;223(Pt 20):jeb226233. doi: 10.1242/jeb.226233.