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| Content Provider | Springer Nature Link |
|---|---|
| Author | Huan, Pin Liu, Gang Wang, Hongxia Liu, Baozhong |
| Copyright Year | 2013 |
| Abstract | The larval shell emerges early in embryogenesis of mollusks, but the detailed mechanisms of its biogenesis remain to be determined. In this study, we cloned a tyrosinase gene (cgi-tyr1) that potentially functioned in larval shell biogenesis from the Pacific oyster Crassostrea gigas, a worldwide bivalve species. Sequence analysis of cgi-tyr1 revealed that it had typical copper-binding domains and a signal peptide. Through whole mount in situ hybridization and an electron scanning microscopic observation, we detected the expression of cgi-tyr1 firstly in the saddle-shaped shell field in trochophores, indicating that cgi-tyr1 might participate in the biogenesis of the initial non-calcified shell of trochophores. In the following development to early D-veliger, cells in the central region of shell field exhibited no detectable cgi-tyr1 expression, and cgi-tyr1 expression was sustained only in the edge of the shell field and the hinge region, indicating that cgi-tyr1 might function fundamentally in shell growth from trochophore to early D-veliger. Unexpectedly, cgi-tyr1 expression was not detected after the D-veliger stage. This indicated that other molecules might function in later shell development. Our results suggested a role for a tyrosinase gene that specifically functioned in the initial phase of the larval shell biogenesis of C. gigas. This work would shed light on future studies on larval shell development and might be helpful to understand how the molluscan shell emerged during evolution. |
| Starting Page | 389 |
| Ending Page | 394 |
| Page Count | 6 |
| File Format | |
| ISSN | 0949944X |
| Journal | Development Genes and Evolution |
| Volume Number | 223 |
| Issue Number | 6 |
| e-ISSN | 1432041X |
| Language | English |
| Publisher | Springer Berlin Heidelberg |
| Publisher Date | 2013-07-30 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Bivalve Development Periostracum Whole mount in situ hybridization Developmental Biology Neurosciences Cell Biology Biochemistry Animal Genetics and Genomics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Developmental Biology |
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