Abstract:
:The fruit-fly Drosophila melanogaster harbours different types of ciliary structures: ciliary projections associated with neurons of type I and cilium-like regions (CLRs) found during male gametogenesis. The latter deserve particular attention since they are morphologically similar to vertebrate primary cilia and transform into the sperm axonemes during spermiogenesis. Although, all the centrioles are able to organize the CLRs, we found that the mother centriole docks first to the plasma membrane suggesting a new intrinsic functional asymmetry between the parent centrioles. We also show that the CLRs lack the Y-links that connect the axoneme doublets with the plasma membrane in conventional primary cilia. Moreover, the C-tubules, that are lacking in the axoneme of the primary cilia, persisted along the CLRs albeit modified into longitudinal blades. Remarkably, mutant flies in which the CLRs are devoid of the C-tubules or their number is reduced lack sperm axonemes or have incomplete axonemes. Therefore, the C-tubules are dispensable for the assembly of the CLRs but are essential for sperm axoneme elongation and maintenance in Drosophila.
journal_name
Exp Cell Resjournal_title
Experimental cell researchauthors
Gottardo M,Persico V,Callaini G,Riparbelli MGdoi
10.1016/j.yexcr.2018.08.020subject
Has Abstractpub_date
2018-10-01 00:00:00pages
262-268issue
1eissn
0014-4827issn
1090-2422pii
S0014-4827(18)30743-2journal_volume
371pub_type
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