title: Aragonite shells are more ancient than calcite ones in bivalves: new evidence based on omics.
abstract: Two calcium carbonate crystal polymorphs, aragonite and calcite, are the main inorganic components of mollusk shells. Some fossil evidences suggest that aragonite shell is more ancient than calcite shell for the Bivalvia. But, the molecular biology evidence for the above deduction is absent. In this study, we searched for homologs of bivalve aragonite-related and calcite-related shell proteins in the oyster genome, and found that no homologs of calcite-related shell protein but some homologs of aragonite-related shell proteins in the oyster genome. We explained the results as the new evidence to support that aragonite shells are more ancient than calcite shells in bivalves combined the published biogeological and seawater chemistry data.
authors: National & Local Joint Engineering Laboratory of Ecological Mariculture, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China.
authors: Xiaotong
authors: X
authors: Wang
authors: Li
authors: L
authors: Li
authors: Yabing
authors: Y
authors: Zhu
authors: Xiaorui
authors: X
authors: Song
authors: Xiaodong
authors: X
authors: Fang
authors: Ronglian
authors: R
authors: Huang
authors: Huayong
authors: H
authors: Que
authors: Guofan
authors: G
authors: Zhang
mesh_terms: D060105:Animal Shells / Q000737:chemistry*; D000818:Animals; D005075:Biological Evolution; D002119:Calcium Carbonate / Q000032:analysis*; D049896:Crassostrea / Q000737:chemistry*; D005580:Fossils; D011506:Proteins / Q000378:metabolism; D040901:Proteomics / Q000379:methods*; D012623:Seawater / Q000737:chemistry
chemical_list: D011506:Proteins; D002119:Calcium Carbonate