Characteristics of RDGA: Mutants with retinal degeneration in Drosophila
Characteristics of RDGA: Mutants with retinal degeneration in Drosophila
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RDGA 的特征:果蝇视网膜变性突变体
DOI:
10.1016/0022-1910(82)90082-8
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发表时间:
1982
影响因子:
2.2
通讯作者:
W. S. Stark
中科院分区:
文献类型:
--
作者:
Mary A. Johnson;Karen L. Frayer;W. S. Stark
We have characterized mutants of the gene retinal degeneration A (rdgA) in Drosophila using histology, optics, deep pseudopupil techniques, electrophysiology and phototactic testing. Earlier work showed that different mutant alleles differed in whether R7 and R8 (2 receptor types of 8 cells per facet in the compound eye) degenerated. We studied a weakly degenerate allele (without much R 7 8 degeneration), namely rdgA PC47, and a strongly mutant allele, rdgA BS12. Our techniques all show that degeneration is more severe in rdgA BS12, not only for R 7 8 but for R1-6 and ocelli as well. We confirm that R 7 8 degenerates more slowly than R1–6 in rdgA PC47. Mutants of a different gene, namely rdgB, have been widely used in studies of the visual system. Although retinal degeneration is severe in rdgA, the first synaptic neuropil in rdgA remains much more nearly normal than it does in rdgB.