Possible co-option ofengrailedduring brachiopod and mollusc shell development | Zendy

Keisuke Shimizu | Zendy; YiJyun Luo | Zendy; Noriyuki Satoh | Zendy; Kazuyoshi Endo | Zendy

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Possible co-option ofengrailedduring brachiopod and mollusc shell development

Author(s) -

Keisuke Shimizu,

YiJyun Luo,

Noriyuki Satoh,

Kazuyoshi Endo

Publication year - 2017

Publication title -

biology letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.596

H-Index - 110

eISSN - 1744-957X

pISSN - 1744-9561

DOI - 10.1098/rsbl.2017.0254

Subject(s) - engrailed , biology , mantle (geology) , homeobox , mollusca , inner mongolia , transcription factor , gene , bivalvia , shell (structure) , embryonic stem cell , larva , anatomy , evolutionary biology , microbiology and biotechnology , paleontology , genetics , ecology , law , political science , china , materials science , composite material

In molluscs, two homeobox genes, engrailed ( en ) and distal-less ( dlx ), are transcription factors that are expressed in correlation with shell development. They are expressed in the regions between shell-forming and non-shell-forming cells, likely defining the boundaries of shell-forming fields. Here we investigate the expression of two transcription factors in the brachiopod Lingula anatina We find that en is expressed in larval mantle lobes, whereas dlx is expressed in larval tentacles. We also demonstrate that the embryonic shell marker mantle peroxidase ( mpox ) is specifically expressed in mantle lobes. Our results suggest that en and mpox are possibly involved in brachiopod embryonic shell development. We discuss the evolutionary developmental origin of lophotrochozoan biomineralization through independent gene co-option.

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