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- W2277608960 endingPage "113" @default.
- W2277608960 startingPage "104" @default.
- W2277608960 abstract "The ancestral eukaryotes presumably had an MTOC (microtubule organizing center) which late gave origin to the centriole and the flagellar axoneme. The centrosome of insect early spermatids is in general composed of two components: a single centriole and a cloud of electron-dense pericentriolar material (PCM). During spermiogenesis, the centriole changes its structure and gives rise to a flagellar axoneme, while the proteins of PCM, gamma tubulin in particular, are involved in the production of microtubules for the elongation and shaping of spermatid components. At the end of spermiogenesis, in many insects, additional material is deposited beneath the nucleus to form the centriole adjunct (ca). This material can also extend along the flagellum in two accessory bodies (ab) flanking the axoneme. Among Homoptera Sternorrhyncha, a progressive modification of their sperm flagella until complete disappearance has been verified. In the Archaeococcidae Matsucoccus feytaudi, however, a motile sperm flagellum-like structure is formed by an MTOC activity. This finding gives support to the hypothesis that an evolutionary reversal has occurred in the group and that the cell, when a non-functional centriole is present, activates an ancestral structure, an MTOC, to form a polarized motile bundle of microtubules restoring sperm motility. The presence and extension of the centriole adjunct in the different insect orders is also enlisted." @default.
- W2277608960 created "2016-06-24" @default.
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- W2277608960 creator A5068020164 @default.
- W2277608960 creator A5071097381 @default.
- W2277608960 date "2016-04-01" @default.
- W2277608960 modified "2023-10-18" @default.
- W2277608960 title "The centriole adjunct of insects: Need to update the definition" @default.
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- W2277608960 doi "https://doi.org/10.1016/j.tice.2016.02.001" @default.
- W2277608960 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/26899558" @default.
- W2277608960 hasPublicationYear "2016" @default.
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