Abstract:
:An ovarian follicle of Drosophila consists of an oocyte, 15 nurse cells, and hundreds of follicular epithelial cells. A freeze-fracture analysis of the surfaces between glutaraldehyde-fixed ovarian cells showed that all three cell types were interconnected by gap junctions. This is the first report of gap junctions between adjacent nurse cells, between nurse cells and oocytes, and between follicle cells and oocytes in Drosophila. Since we did not observe intramembranous particle clumping into crystalline patterns and since structurally different gap junctions occurred at different times in development and at different cell-cell interfaces, it is unlikely that fixation artifacts influenced particle distribution in our experiments. A computer-assisted morphometric analysis showed that the extent, size, and morphology of gap junctions varied with development and that these junctions can cover up to 9% of the cell surfaces. To test the role of gap junctions in follicular maturation, we studied ovaries from flies homozygous for the female sterile mutation fs(2)A17, in which follicles develop normally until yolk deposition commences. During the development of mutant follicles, gap junctions became abnormal before any other morphological aspect of the follicle. These studies show that gap junctions are available to play an important role in coordinating intercellular activities between all three cell types in ovarian follicles of Drosophila.
journal_name
J Morpholjournal_title
Journal of morphologyauthors
Giorgi F,Postlethwait JHdoi
10.1002/jmor.1051850109subject
Has Abstractpub_date
1985-07-01 00:00:00pages
115-29issue
1eissn
0362-2525issn
1097-4687journal_volume
185pub_type
杂志文章abstract::The antennal circulatory organ of Periplaneta americana and Blaberus craniifer was investigated by light and electron microscopy. This organ consists of two pulsatile ampullae located near the antennal base which are interconnected by a large transverse muscle and associated blood vessels which run into the antennae. ...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051850210
更新日期:1985-08-01 00:00:00
abstract::Larvae of sea stars are surrounded by an extracellular matrix called the hyaline layer. The lectin-binding properties of this matrix were investigated in an ultrastructural study of Patiriella species having different modes of development. The planktonic bipinnaria and brachiolaria of P. regularis and the planktonic b...
journal_title:Journal of morphology
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journal_title:Journal of morphology
pub_type: 杂志文章
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journal_title:Journal of morphology
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journal_title:Journal of morphology
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journal_title:Journal of morphology
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journal_title:Journal of morphology
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更新日期:1989-06-01 00:00:00
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journal_title:Journal of morphology
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更新日期:1986-09-01 00:00:00
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journal_title:Journal of morphology
pub_type: 杂志文章
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更新日期:1982-08-01 00:00:00
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journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.20349
更新日期:2015-04-01 00:00:00
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journal_title:Journal of morphology
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更新日期:2017-12-01 00:00:00
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journal_title:Journal of morphology
pub_type: 杂志文章
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更新日期:1987-11-01 00:00:00
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journal_title:Journal of morphology
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更新日期:2014-11-01 00:00:00
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journal_title:Journal of morphology
pub_type: 杂志文章
doi:
更新日期:1976-10-01 00:00:00
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journal_title:Journal of morphology
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更新日期:1975-03-01 00:00:00
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pub_type: 杂志文章
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更新日期:1985-11-01 00:00:00
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journal_title:Journal of morphology
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journal_title:Journal of morphology
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更新日期:2015-10-01 00:00:00
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journal_title:Journal of morphology
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