Identification of scavenger receptors and thrombospondin-type-1 repeat proteins potentially relevant for plastid recognition in Sacoglossa

Ecology and Evolution
Jenny Melo ClavijoGregor Christa

Abstract

Functional kleptoplasty is a photosymbiotic relationship, in which photosynthetically active chloroplasts serve as an intracellular symbiont for a heterotrophic host. Among Metazoa, functional kleptoplasty is only found in marine sea slugs belonging to the Sacoglossa and recently described in Rhabdocoela worms. Although functional kleptoplasty has been intensively studied in Sacoglossa, the fundamentals of the specific recognition of the chloroplasts and their subsequent incorporation are unknown. The key to ensure the initiation of any symbiosis is the ability to specifically recognize the symbiont and to differentiate a symbiont from a pathogen. For instance, in photosymbiotic cnidarians, several studies have shown that the host innate immune system, in particular scavenger receptors (SRs) and thrombospondin-type-1 repeat (TSR) protein superfamily, is playing a major role in the process of recognizing and differentiating symbionts from pathogens. In the present study, SRs and TSRs of three Sacoglossa sea slugs, Elysia cornigera, Elysia timida, and Elysia chlorotica, were identified by translating available transcriptomes into potential proteins and searching for receptor specific protein and/or transmembrane domains. Both rec...Continue Reading

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Citations

May 15, 2021·Journal of Experimental Botany·Vesa HavurinneEsa Tyystjärvi
Jul 6, 2021·Frontiers in Immunology·Lara SchmittmannLucía Pita

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Datasets Mentioned

BETA
SRS3101883
SRS706683
SRS706681

Software Mentioned

TMHMM
RSEM
edgeR
HIT
BLASTP
TransDecoder
CD
Bowtie2
Trinity
HMMER

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