File:Orciraptor-gr1 lrg.jpg

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English: Feeding, life history, and de novo transcriptome assembly of Orciraptor agilis.
(A) O. agilis extracting the chloroplast of Mougeotia sp. after perforating the algal cell wall (differential interference contrast). Scale bar, 5 μm.
(B) Annular dissolution of the algal cell wall resulting from an attempted attack (phase contrast). Scale bar, 5 μm.
(C) Distribution of F-actin (green: fluorescent phalloidin) reveals the lysopodium in O. agilis formed during attack on Mougeotia sp. (overlay of differential interference contrast and fluorescence channels). The increased blue fluorescence (Calcofluor white) at the contact sites indicates lysis of the algal cell wall. Scale bar, 5 μm.
(D) Scanning electron micrograph of a perforation by O. agilis reveals the degradation of both main structural components of Mougeotia’s cell wall, gel-like biopolymers (potentially pectins; indicated by “gel”) and cellulose microfibrils (indicated by “fib”). Scale bars, 2 μm and 200 nm (inset).
(E) Life history stages of O. agilis from which the samples were generated.
(F) Benchmarked universal single-copy orthologs (BUSCOs) assessment of the assembled transcriptome.
(G) Upset plot showing the number and overlap of ORFs annotated by the indicated annotation tools and databases. Only intersection sizes > 100 are shown.
(H) Principal component analysis (PCA) based on the expression level of all transcripts for each replicate included in the experiment.
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Source Fig. 1 at https://www.cell.com/current-biology/fulltext/S0960-9822(22)00852-1 Comparative transcriptomics reveals the molecular toolkit used by an algivorous protist for cell wall perforation. In: Cell Current Biology, S0960-9822(22)00852-1; doi:10.1016/j.cub.2022.05.049, PMID 35700733
Author Jennifer V. Gerbracht, Tommy Harding, Alastair G. B. Simpson, Andrew J. Roger, Sebastian Hess
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