Potential trade-offs between biomineralization and immunity revealed by shell properties and gene expression profiles of two closely related Crassostrea species

The Journal of Experimental Biology
Anna V IvaninaInna M Sokolova

Abstract

Species of the Ostreidae family are key ecosystem engineers and many of them - including Crassostrea gigas and Crassostreavirginica - are commercially important aquaculture species. Despite similarities in their morphology and ecology, these two species differ in their ability to defend against pathogens, potentially reflecting species-specific differential specialization of hemocytes on immune defense versus biomineralization. To test this hypothesis, we investigated the expression levels of immune- and biomineralization-related genes as well as mineralogical and mechanical properties of the shells and the calcium sequestration ability of the hemocytes of C. gigas and C. virginica The expression of biomineralization-related genes was higher in C. virginica than in C. gigas in multiple tissues including the mantle edge and hemocytes, while the expression of immune genes was higher in the hemocytes of C. gigas Hemocytes of C. virginica contained more calcium (stored intracellularly as calcium carbonate mineral) compared with those of C. gigas Analysis of the adult shells showed that the crystallinity of calcite was higher and the laths of the foliated layer of the shell were thicker in C. virginica than in C. gigas Mechanically,...Continue Reading

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Citations

Aug 2, 2020·Biological Reviews of the Cambridge Philosophical Society·Melody S ClarkElizabeth M Harper
May 31, 2020·The Journal of Experimental Biology·Melody S Clark
Jun 27, 2020·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Anna V IvaninaInna M Sokolova

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