From: Charles Date: Fri, 11 Sep 2020 04:31:46 +0000 (+0900) Subject: Café X-Git-Url: https://source.charles.plessy.org/?a=commitdiff_plain;h=7e903b04838ed62433ca986c448380942ca9be93;p=source.git Café --- diff --git a/biblio/12453460.mdwn b/biblio/12453460.mdwn new file mode 100644 index 00000000..a646de14 --- /dev/null +++ b/biblio/12453460.mdwn @@ -0,0 +1,10 @@ +[[!meta title="Patterning through differential endoreduplication in epithelial organogenesis of the chordate, Oikopleura dioica."]] +[[!tag Oikopleura cell_cycle]] + +Ganot P, Thompson EM. + +Patterning through differential endoreduplication in epithelial organogenesis of the chordate, _Oikopleura dioica_. + +Dev Biol. 2002 Dec 1;252(1):59-71. doi:10.1006/dbio.2002.0834 + +[[!pmid 12453460 desc="In the epithelial cells, “endoreduplication begins before tailshift and stops during gamete differentiation.” “Endocycles are asynchronous within a given field of oikoplastic cells, but the replication pattern is bilaterally symmetrical.” “In mature animals, final ploidy levels ranged from a low of 34 C in chain of pearl nuclei to 1300 C in giant Eisen nuclei.” Cells with higher ploidy had shorter gap phases."]] diff --git a/tags/Oikopleura.mdwn b/tags/Oikopleura.mdwn index f3ed4dc6..ce6665c1 100644 --- a/tags/Oikopleura.mdwn +++ b/tags/Oikopleura.mdwn @@ -392,6 +392,10 @@ Development ([[Bassham and Postlethwait (2000)|biblio/10753519]]). - Expression of development genes is retarded by polyunsaturated aldehydes produced by diatoms ([[Torres-Águila and coll., 2018|biblio/30272001]]). + - Epithelial cells divide by mitosis during embryogenesis. Once the final number + of cells is produce, they grow by endomitosis, with final ploidy ranging between + ~30 to ~1300 C. Cells with higher ploidy have shorter gap phases. Endomitoses + stop when gamete differentiation starts. [[Ganot and Thompson, 2002|biblio/12453460]] - Endocycling cells show no polytenisation nor _in loco_ amplifications. Deep invaginations of the nuclear envelopper are shown by simultaneous staining of DNA, RNA and membranes ([[Spada and coll., 2007|biblio/17288541]]).