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Implication of the host TGF beta pathway in the onset of symbiosis between larvae of the coral Fungia scutaria and the dinoflagellate Symbiodinium sp (clade C1f) ArchiMer
Berthelier, Jeremy; Schnitzler, Christine E.; Wood-charlson, Elisha M.; Poole, Angela Z.; Weis, Virginia M.; Detournay, Olivier.
Dinoflagellate-cnidarian associations form both the trophic and structural foundation of coral-reef ecosystems. Previous studies have highlighted the role of host innate immunity in regulation of these partnerships. This study reveals the presence of a transforming growth factor beta (TGF beta) in the coral Fungia scutaria that clusters with TGF beta sensu stricto (ss) from other animals. In functional studies of F. scutaria larvae, we show that (1) TGF beta ss mRNA is expressed during early stages of development prior to the onset of symbiosis; (2) apparent interference of the TGF beta pathway impairs the onset of symbiosis; and (3) this effect is associated with an increase of cytotoxic nitric oxide secretion, an immune response. This work highlights the...
Tipo: Text Palavras-chave: Transforming growth factor beta; Cnidarian; Coral bleaching; Dinoflagellate; Symbiodinium; Symbiosis.
Ano: 2017 URL: https://archimer.ifremer.fr/doc/00412/52389/56297.pdf
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