Microphotometric, ultrastructural, and electrophysiological analyses of light-dependent processes on visual receptors in white-eyed wild-type and norpA (no receptor potential) mutant Drosophila.

Abstract excerpt

We examined a white-eyed strain of the norpA mutant (norpA;cn bw) and white (w)norpA+ controls using microspectrophotometry (MSP), electron microscopy (EM), and electroretinography (ERG). These studies revealed that light mediates receptor demise in norpA even though norpA lacks phototransduction. Rhodopsin and the rhabdomere which houses it decrease with increasing age in norpA but not in w with rearing on a 12...

Topics

• Animals
• Drosophila melanogaster
• Electroretinography
• Light
• Microscopy, Electron
• Mutation
• Photoreceptor Cells
• Rhodopsin
• Spectrophotometry