Literature DB >> 28305538

Dicapryloylglycerol and ammonium ions induce metamorphosis of ascidian larvae.

Stefan Berking1, Klaus Herrmann1.   

Abstract

Larvae of the tunicate Ciona start metamorphosis between some hours and a few days after hatching. Several substances were found to reduce this time span, such as vital dyes [Cloney (1961) Am Zool 1:67-87; Hirani (1961) Bull Mar Biol Stn Asamushi 11:121-125], heavy-metal ions including copper [see review by Lynch (1961) Am Zool 1:59-66] and the hormone thyroxine [Patricolo et al. (1981) Cell Tissue Res 214:289-301]. This study shows that low concentrations of ammonium ions as well as the second messenger dicapryloylglycerol induce metamorphosis immediately after hatching. On the other hand, when the follicle cells are removed newly hatched Ciona remain larvae for days. Follicle cells are possibly degraded by bacteria, which thereby produce ammonia.

Entities:  

Keywords:  Ammonium ions; Ascidia; Diacylglycerol; Metamorphosis

Year:  1990        PMID： 28305538     DOI： 10.1007/BF00376162

Source DB:  PubMed          Journal:  Rouxs Arch Dev Biol        ISSN： 0930-035X


  6 in total

1.  Tunicate eggs utilize ammonium ions for flotation.

Authors:  C C Lambert; G Lambert
Journal:  Science       Date:  1978-04-07       Impact factor: 47.728

2.  Evidence for the involvement of PI-signaling and diacylglycerol second messengers in the initiation of metamorphosis in the hydroid Hydractinia echinata Fleming.

Authors:  T Leitz; W A Müller
Journal:  Dev Biol       Date:  1987-05       Impact factor: 3.582

3.  Ammonia induces metamorphosis of the oral half of buds into polyp heads in the scyphozoan Cassiopea.

Authors:  Stefan Berking; Teresa Schüle
Journal:  Rouxs Arch Dev Biol       Date:  1987-09

4.  Ammonia, tetraethylammonium, barium and amiloride induce metamorphosis in the marine hydroid Hydractinia.

Authors:  Stefan Berking
Journal:  Rouxs Arch Dev Biol       Date:  1988-01

5.  [Induction of metamorphosis in planulae : II. Induction by monovalent cations: The significance of the Gibbs-Donnan ratio and of the Na+/K+-ATPase].

Authors:  Werner A Müller; Gisela Buchal
Journal:  Wilhelm Roux Arch Entwickl Mech Org       Date:  1973-06

6.  The effect of l-thyroxine on the metamorphosis of Ascidia malaca.

Authors:  E Patricolo; G Ortolani; A Cascio
Journal:  Cell Tissue Res       Date:  1981       Impact factor: 5.249
  6 in total
  2 in total

1.  Pulses of ammonia and methylamine induce down-regulation of nematocyte and nerve cell populations in Hydrozoa (Hydra; Hydractinia).

Authors:  Rolf G Lange; Petra Holzenburg; Werner A Müller
Journal:  Rouxs Arch Dev Biol       Date:  1990-11

2.  Heat shock as inducer of metamorphosis in marine invertebrates.

Authors:  Michael Kroiher; Michael Walther; Stefan Berking
Journal:  Rouxs Arch Dev Biol       Date:  1992-05
  2 in total

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