scholarly journals Evolution of Ascidian Development

BioScience ◽  
1997 ◽  
Vol 47 (7) ◽  
pp. 417-425 ◽  
Author(s):  
William R. Jeffery
Keyword(s):  
Ascidian Development

scholarly journals A maternal RNA encoding smad1/5 is segregated to animal blastomeres during ascidian development

1999 ◽  
Vol 41 (4) ◽  
pp. 419-427 ◽  
Author(s):  
Ako Kobayashi ◽  
Yasunori Sasakura ◽  
Michio Ogasawara ◽  
Kazuhiro W. Makabe
Keyword(s):  
Maternal Rna ◽  
Ascidian Development

scholarly journals Antero-posterior ectoderm patterning by canonical Wnt signaling during ascidian development

PLoS Genetics ◽  
2019 ◽  
Vol 15 (3) ◽  
pp. e1008054 ◽  
Author(s):  
Stacy Feinberg ◽  
Agnès Roure ◽  
Julie Piron ◽  
Sébastien Darras
Keyword(s):  
Wnt Signaling ◽  
Canonical Wnt Signaling ◽  
Canonical Wnt ◽  
Ascidian Development

Messenger RNA synthesis during early ascidian development

1978 ◽  
Vol 66 (2) ◽  
pp. 410-421 ◽  
Author(s):  
Thomas H. Meedel ◽  
J.R. Whittaker
Keyword(s):  
Messenger Rna ◽  
Rna Synthesis ◽  
Ascidian Development

Patterns of Gene Expression During Ascidian Development

1990 ◽  
pp. 291-314 ◽  
Author(s):  
William R. Jeffery ◽  
Rebecca L. Beach ◽  
Frederick E. Harrington ◽  
Billie J. Swalla ◽  
Mary E. White
Keyword(s):  
Gene Expression ◽  
Ascidian Development

A model for ascidian development and developmental modifications during evolution

1994 ◽  
Vol 74 (1) ◽  
pp. 35-48 ◽  
Author(s):  
William R. Jeffery
Keyword(s):  
Cell Fate ◽  
Cell Shape ◽  
Body Plan ◽  
Evolutionary Transition ◽  
Larval Body ◽  
Notochord Cells ◽  
Inductive Signal ◽  
Shape Changes ◽  
Signalling Cascade ◽  
Ascidian Development

Ascidian development is reviewed and a model is presented for specification of the larval body plan and cell fate during embryogenesis. The model involves the combined activity of determinants inherited from the egg and inductive cell interactions in the embryo. It is suggested that there are four determinant systems in the egg which are segregated to different blastomeres during cleavage. The ectodermal, endodermal, and muscle determinants specify cell fate autonomously, while the axial determinants initiate cell-shape changes at gastrulation and generate a cascade of inductive activities establishing the larval body plan. In the proposed signalling cascade, the endoderm induces notochord by generating a planar inductive signal late during the cleavage phase, and the notochord cells in turn induce the nervous system by generating a vertical inductive signal in the overlying ectoderm during gastrulation. Ultraviolet (UV) irradiation experiments are described which suggest that axial and muscle determinants exhibit UV-sensitive components resembling nucleic acids and proteins, respectively. The model is evaluated in terms of developmental changes during the evolutionary transition from indirect to direct development. This transition can be explained according to the model by loss or inactivation of the muscle determinants and modification of the inductive activities generated by the axial determinants. These changes are supported by recent studies of embryogenesis in direct-developing ascidians.

RNA-binding Proteins In Ascidian Development

2001 ◽  
pp. 178-185 ◽  
Author(s):  
Takahito Nishikata ◽  
Michiko R. Wada ◽  
Kimio J. Tanaka
Keyword(s):  
Binding Proteins ◽  
Rna Binding ◽  
Rna Binding Proteins ◽  
Ascidian Development
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