Studies on the structure of ocellar photoreceptor cells of Drosophila melanogaster with special reference to subrhabdomeric cisternae

Cell and Tissue Research
C S YoonE Suzuki

Abstract

We studied the structure of ocellar photoreceptor cells of Drosophila melanogaster, particularly the subrhabdomeric cisternae which our previous studies have shown to be essential structures for turnover of photoreceptive membranes in compound eyes. Each ocellus contained elongated photoreceptor cells with rhabdomeres positioned distally. In the subrhabdomeric regions, endocytotic invaginations were frequently observed, suggesting active turnover of photoreceptive membranes. In the vicinity of the photoreceptive microvilli, membranous structures similar to the subrhabdomeric cisternae in compound eyes were observed. These membranous structures were immunopositive for the rdgB protein, a phosphatidylinositol transfer protein that is localized to the subrhabdomeric cisternae in compound eyes. The ocellar photoreceptor cells of the retinal degeneration mutants (rdgA,B) were also studied. In these mutants, retinal degeneration has been reported to start, in compound eyes, with the disappearance of the subrhabdomeric cisternae. We found that the ocellar subrhabdomeric cisternae also disappear during the initial stage of retinal degeneration. From these observations, we conclude that the mechanism of photoreceptive membrane turnover ...Continue Reading

Citations

Feb 18, 2014·Micron : the International Research and Review Journal for Microscopy·Qingxiao Chen, Baozhen Hua
Feb 1, 2011·Critical Reviews in Biochemistry and Molecular Biology·Shamshad Cockcroft, Kathryn Garner
May 23, 2012·European Journal of Cell Biology·Monalisa MishraElisabeth Knust
May 24, 2011·Microscopy Research and Technique·Yao Wei, Baozhen Hua
Oct 13, 2006·Nature·Andrew C ZelhofCharles S Zuker
Mar 28, 2018·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Willi Ribi, Jochen Zeil
Jul 28, 2021·PLoS Genetics·Abhishek Kumar MishraSimon G Sprecher

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