fig3

Epithelial sheaths form adjacent to somatosensensory neurons in a modality-specific manner.

( A–C) Dual-labelling of epithelial sheaths and all somatosensory neurons. Maximum projections of confocal stacks show ( A) mRFP-labeled sensory neurons (magenta) together with epidermal PLCδ-PH-GFP signal (green) or ( B) epidermal PLCδ-PH-GFP signal on its own. ( C) PLCδ-PH-GFP-positive sheaths are pseudocolored with dendrite-associated sheaths shaded in magenta and sheaths without apposed dendrites shaded in green. ( D, E) Dual-labeling of epithelial sheaths and c3da/c4da sensory neurons. ( D) tdTomato-labeled c3da and c4da neurons (magenta) are shown together with epidermal PLCδ-PH-GFP signal (green). ( E) Image showing epidermal PLCδ-PH-GFP signal with c3da-containing sheaths shaded green and c4da-containing sheaths shaded magenta. ( F) Histogram depicting mean and standard deviation values for the portion of the dendrite arbor of different classes of da neurons ensheathed by the epidermis using PLCδ-PH-GFP or cora immunostaining as a marker for ensheathment. ( G–K) The extent of ensheathment was inversely correlated with trigeminal (TG) axon complexity in zebrafish. Examples of single TG neurons labeled by transient injection of  Tg(isl1[ss]:LEXA-VP16,LEXAop:tdTomato) with low ( G, H) or high ( I, J) branch density. Epidermal sheaths are shaded in magenta in ( H, J). ( K) Scatterplot of axon branches versus percentage of axon length ensheathed from tracings of 12 individual TG neurons. Note the inverse linear regression (blue line)

Expression Data

Expression Detail
Antibody Labeling
Phenotype Data

Phenotype Detail
Acknowledgments
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