作者: S. Ciolfi , C. Mencarelli , R. Dallai
DOI: 10.1002/CM.21291
关键词: Axoneme 、 Biology 、 Flagellum 、 Sperm 、 Motility 、 Ultrastructure 、 Dynein 、 Cell biology 、 Anatomy 、 Radial spoke 、 Cilium
摘要: The 9 + 2 axoneme of cilia and flagella is specialized machinery aimed at the production efficient, finely tuned motility, it has been evolutionarily conserved from protists to mammals. However, sperm cells several insects express unconventional axonemes, which represent unique models for studying structural-functional relationships underlying axonemal function evolution. Cecidomids comprise a group dipterans characterized by an overall tendency deviate standard pattern. In particular, subfamily Cecidomyiinae shows series progressive modifications axoneme. We previously analyzed unusual axonemes Asphondylia ruebsaameni (Asphondyliidi) Monarthropalpus buxi (Cecidomyiidi), are absence any structure related control motility (that is, central pair complex, radial spokes inner dynein arms); however, these motile, driven outer arms only. This simplification accompanied parallel reduction in isoform complement. Here, we complete our survey organization evolution complement cecidomids with characterization both ultrastructure genes Dryomyia lichtensteini, representative Lasiopteridi, cecidomid taxon aberrant immotile cells. On basis whole set data, discuss potential molecular mechanism(s) modification cecidomids, leading first eventually loss motility.