Skip to main content
Log in

Transcriptome Analysis of Heterosis in Survival in the Hybrid Progenies of ‘Haida No. 1’ and Orange-Shelled Lines of the Pacific Oyster Crassostrea gigas

  • Published:
Journal of Ocean University of China Aims and scope Submit manuscript

Abstract

Heterosis has been exploited to enhance the yield and adaptability in various shellfish species; however, the molecular basis of it remains unclear. The Pacific oyster Crassostrea gigas is one of the most economically important aquaculture species, and its productive traits can be improved by hybridization. Here, an intraspecific cross between orange shell (O, 10th generation) and ‘Haida No. 1’ (H, 13th generation) of C. gigas was performed to assess the heterosis of survival trait. Survival rates of hybrid family (OH) and inbred families (HH and OO) were compared at larval stage, and eyed-pediveliger larvae of three families were subjected to transcriptome analysis. The analysis results of best-parent heterosis and mid-parent heterosis showed that the hybrid family exhibited a high heterosis in survival relative to the parental families. The OH-M (OH vs. OO) and OH-P (OH vs. HH) had 425 and 512 differentially expressed genes (DEGs), respectively. Functional enrichment analysis of these DEGs revealed that the significantly enriched genes function in virion binding, C-type lectin receptor signaling pathway, cellular defense response and other immune-related processes, which involves perlucin-like protein, CD209 antigen-like protein, ZNFX1, caspase-3 and acan genes. These differentially expressed genes in OH-M and OH-P, together with the immune-related processes mentioned above may play an important role in the larval survival of C. gigas. In addition, three genes (CYP450, fucolectin and perlucin-like) are associated with the orange shell and low survival of maternal oyster OO. These findings provide support for the application of hybrid with superior survival and will facilitate the understanding of heterosis formation in the Pacific oyster.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

Download references

Acknowledgements

This research was supported by the grants from the China Agriculture Research System Project (No. CARS-49), and the Earmarked Fund for Agriculture Seed Improvement Project of Shandong Province (No. 2020LZGC016).

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Qi Li.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Yang, H., Li, Q. Transcriptome Analysis of Heterosis in Survival in the Hybrid Progenies of ‘Haida No. 1’ and Orange-Shelled Lines of the Pacific Oyster Crassostrea gigas. J. Ocean Univ. China 23, 199–208 (2024). https://doi.org/10.1007/s11802-024-5643-8

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11802-024-5643-8

Key words

Navigation