From df4ff8f2dfe46a353161a99fb02abeb830d93cc1 Mon Sep 17 00:00:00 2001 From: Charles Date: Fri, 17 Jan 2020 16:17:10 +0900 Subject: [PATCH] coenocyst --- biblio/17126826.mdwn | 10 ++++++++++ tags/Oikopleura.mdwn | 7 +++++-- 2 files changed, 15 insertions(+), 2 deletions(-) create mode 100644 biblio/17126826.mdwn diff --git a/biblio/17126826.mdwn b/biblio/17126826.mdwn new file mode 100644 index 00000000..946d8620 --- /dev/null +++ b/biblio/17126826.mdwn @@ -0,0 +1,10 @@ +[[!meta title="The Oikopleura coenocyst, a unique chordate germ cell permitting rapid, extensive modulation of oocyte production."]] +[[!tag Oikopleura]] + +Ganot P, Bouquet JM, Kallesøe T, Thompson EM. + +Dev Biol. 2007 Feb 15;302(2):591-600 doi:10.1016/j.ydbio.2006.10.021 + +The Oikopleura coenocyst, a unique chordate germ cell permitting rapid, extensive modulation of oocyte production. + +[[!pmid 17126826 desc="The coenocyst is a syncytium containing nurse nuclei and meiotic nuclei surrounded by their cytoplasms and connected by ring channels. Figure 1p of spawned oocytes in cortical metaphase I shows 3 DNA masses. Germline-specific expression of Vasa."]] diff --git a/tags/Oikopleura.mdwn b/tags/Oikopleura.mdwn index 6b418a3c..8ef453fd 100644 --- a/tags/Oikopleura.mdwn +++ b/tags/Oikopleura.mdwn @@ -285,11 +285,16 @@ Tools Development ----------- + - The oocytes originate from a specialised syncitium, the coenocyst, in which + nurse cells and oocytes are connected by cytoplasmic bridges, the ring channels + ([[Ganot and coll., 2007|17126826]]). - The first and second polar bodies are visible 5 and 15 min after fertilisation, respectively ([[Nishino and Morisawa, 1998|biblio/10.2108_zsj.15.723]]). - First embryonic cleavages are deterministic and “Clonal organization of the tissues is essentially invariant among individuals” ([[Stach and coll., 2008|biblio/18490654]]). + - Colchicine treatment induced early differenciation of the oocytes + ([[Ganot, Kallesøe, Thompson (2007)|biblio/17123503]]). - Generation times shortens when temperature rises. First spawnings are seen on day 6 at 14.2 °C, and on day 8 at 17.2 °C ([[Bouquet and coll., 2018|biblio/29298334]]). Reported generation times in the litterature: 149 ± 2 @@ -303,8 +308,6 @@ Development eventually pause. Animals in GA can survive ~18 days at 15°C. GA can also be induced by inhibiting the TOR pathway ([[Subramaniam, Campsteijn and Thompson, 2014|biblio/24695788]]). - - Colchicine treatment induced early differenciation of the oocytes - ([[Ganot, Kallesøe, Thompson (2007)|biblio/17123503]]). - Telomeres are localised at the nuclear envelope and do not overlap with nuclear pore complexes in early meiotic oocytes before H3S10 phosphorylation. In nurse cells at a later stage of oocyte development, the telomeres localise in silent -- 2.47.3