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Fig. 4 | BMC Genomics

Fig. 4

From: Organ transcriptomes of the lucinid clam Loripes orbiculatus (Poli, 1791) provide insights into their specialised roles in the biology of a chemosymbiotic bivalve

Fig. 4

Genes expressed specifically in the symbiont-housing gills of Loripes orbiculatus and putatively involved in symbiosis. a The organisation of gill filaments along the transverse plane. The L. orbiculatus gill filaments are organised into a ciliated zone that is devoid of symbionts and a bacteriocyte zone. b The receptors and molecular signalling pathways involved in innate immunity and apoptosis. These molecular pathways could regulate apoptosis in either the ciliated zone or the bacteriocyte zone. DEATH – death domain (PF00531); CARD – card domain (PF00619); TIR – Tir domain (PF01582 or PF13676); ARM – armadillo repeat region (PF00514). c Metabolite transport, intracellular digestion, facilitation of symbiont chemoautotrophic metabolism. Pointed arrows indicate putative direction of pathway activity. Bar-ending arrows indicate inhibitory activity

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