![]() ![]() Finally, a phylogenetic analysis of key circadian clock genes among 27 evolutionarily representative species indicated that there are four key members in early metazoans, including cry genes Clock or Npas2 cyc or Arntl and tim, while per, as the fifth member, occurs in Bilateria.Ĭoral reefs are among the most productive and biodiverse ecosystems on earth, and they provide survival habitats for approximately 30% of marine life. ![]() Interestingly, we observed that intracellular algal cells share some evolutionary convergence between intracellular symbiosis in corals and intracellular digestion in amphioxus. The gene expression profiles of the symbiote Symbiodiniaceae were also isolated and annotated from the holobiont sequence data these profiles showed more highly convergent traits related to gene structure and expression level than those of coral hosts. ![]() Among them, a comparative analysis of biomineralization-related genes provided insights into the molecular basis of coral skeletal density. We obtained information on gene functions, structures and expression profiles. Results We sequenced the full-length transcriptomes of four common and frequently dominant reef-building corals, including two Robusta clade species, Pocillopora damicornis and Pocillopora verrucosa, and two Complexa clade species, Acropora muricata and Montipora foliosa, using the PacBio Sequel II platform.
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