Duplication of spiralian-specific TALE genes and evolution of the blastomere specification mechanism in the bivalve lineage.

ABSTRACT:

Background

Despite the conserved pattern of the cell-fate map among spiralians, bivalves display several modified characteristics during their early development, including early specification of the D blastomere by the cytoplasmic content, as well as the distinctive fate of the 2d blastomere. However, it is unclear what changes in gene regulatory mechanisms led to such changes in cell specification patterns. Spiralian-TALE (SPILE) genes are a group of spiralian-specific transcription factors that play a role in specifying blastomere cell fates during early development in limpets. We hypothesised that the expansion of SPILE gene repertoires influenced the evolution of the specification pattern of blastomere cell fates.

Results

We performed a transcriptome analysis of early de

SUBMITTER: Phuangphong S 

PROVIDER: S-EPMC8524836 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature