Project description:Expression profile of wild-type S. ovata and methanol-adapted strain grown autotrophically with H2 as the source of electron. Illumina RNA-Seq of total RNA extracted from a strain of S. ovata evolved by adaptive laboratory evolution to grow faster with methanol 2% as the sole susbtrate and from the wild type. The adapted strain was transfer 18 times on methanol 2%. Total RNA was extracted from both strains growing with H2/CO2.

2016-02-22 | E-GEOD-66194 | biostudies-arrayexpress

Morphological and dietary changes encoded in the genome of <i>Beroe ovata</i>, a ctenophore-eating ctenophore.

Project description:As the sister group to all other animals, ctenophores (comb jellies) are important for understanding the emergence and diversification of numerous animal traits. Efforts to explore the evolutionary processes that promoted diversification within Ctenophora are hindered by undersampling genomic diversity within this clade. To address this gap, we present the sequence, assembly and initial annotation of the genome of Beroe ovata. Beroe possess unique morphology, behavior, ecology and development. Unlike their generalist carnivorous kin, beroid ctenophores feed exclusively on other ctenophores. Accordingly, our analyses revealed a loss of chitinase, an enzyme critical for the digestion of most non-ctenophore prey, but superfluous for ctenophorivores. Broadly, our genomic analysis revealed that extensive gene loss and changes in gene regulation have shaped the unique biology of B. ovata. Despite the gene losses in B. ovata, our phylogenetic analyses on photosensitive opsins and several early developmental regulatory genes show that these genes are conserved in B. ovata. This additional sampling contributes to a more complete reconstruction of the ctenophore ancestor and points to the need for extensive comparisons within this ancient and diverse clade of animals. To promote further exploration of these data, we present BovaDB (http://ryanlab.whitney.ufl.edu/bovadb/), a portal for the B. ovata genome.

| S-EPMC11184263 | biostudies-literature

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