Temporal separation of rhabdom shrinkage and mvb formation in the light-adapting crayfish retina
✍ Scribed by Piekos, W. Barry
- Publisher
- John Wiley and Sons
- Year
- 1989
- Tongue
- English
- Weight
- 561 KB
- Volume
- 250
- Category
- Article
- ISSN
- 0022-104X
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✦ Synopsis
By using experimental light regimes, it is possible to alter independently the timing of both multivesicular body (MVB) production and decreases in rhabdom diameter. As a result, two distinct phases of MVB synthesis are revealed, neither of which appears temporally linked to rhabdom shrinkage. This supports the idea that MVB production and diminishing rhabdoms are not causally related in the manner predicted by the lysosome-related-body (LRB) hypothesis of rhabdom cycling. Furthermore, a statistically significant relationship is found between midday rhabdom enlargement and a decrease in the fractional volume of MVBs.