Embryonic expression of a hemichordate distal-less gene
スポンサーリンク
概要
- 論文の詳細を見る
Hemichordates occupy a critical phylogenetic position among deuterostomes because they exhibit echinoderm-like larval morphology and chordate-like adult morphology. Analyses of the expression and function of hemichordate developmental genes will therefore provide insight into the evolution of deuterostome body plans. The distal-less/dlx gene encodes a homeodomain transcription factor and plays roles in the development of appendages and the brain in a variety of animals. Here we have characterized a distal-less gene (Pf-dlx) of the hemichordate Ptychodera flava. During embryogenesis, Pf-dlx is expressed in the whole aboral ectoderm of the blastula and gastrula. Later, its expression appears in several cells in the boundary region between the oral and aboral ectoderm. The tornaria larvae express Pf-dlx in some specific cells of the ciliary band. The results are discussed in terms of an ancestral function of the distal-less/dlx gene in the formation of the nervous system.
- 社団法人日本動物学会の論文
- 2001-01-20
著者
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Satoh N
Department Of Zoology Graduate School Of Science Kyoto University
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Humphreys T
Univ. Hawaii Hi Usa
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Humphreys Tom
Kewalo Marine Laboratory Pacific Biomedical Research Center University Of Hawaii
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Satoh Noriyuki
Department Of Zoology Graduate School Of Science Kyoto University
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Harada Yoshito
Department of Zoology, Graduate School of Science, Kyoto University
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Shoguchi Eiichi
Department of Zoology, Graduate School of Science, Kyoto University
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Taguchi Shunsuke
Department of Zoology, Graduate School of Science, Kyoto University
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Okai Noko
Department of Zoology, Graduate School of Science, Kyoto University
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Tagawa Kunifumi
Kewalo Marine Laboratory, Pacific Biomedical Research Center, University of Hawaii
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Satoh Nori
Kewalo Marine Laboratory, Pacific Biomedical Research Center, University of Hawaii
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Okai Noko
Department Of Zoology Graduate School Of Science Kyoto University
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Harada Y
Kuroda Chiromorphology Project Erato Japan Science And Technology Corporation (jst):sugashima Marine
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Harada Yoshito
Department Of Zoology Graduate School Of Science Kyoto University
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Tagawa K
Department Of Zoology Graduate School Of Science Kyoto University:kewalo Marine Laboratory Pacific B
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Tagawa Kunifumi
Kewalo Marine Laboratory Pacific Biomedical Research Center University Of Hawaii:department Of Ophth
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Shoguchi E
Department Of Zoology Graduate School Of Science Kyoto University
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Shoguchi Eiichi
Department Of Zoology Graduate School Of Science Kyoto University
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Taguchi Shunsuke
Department Of Zoology Graduate School Of Science Kyoto University
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- Preface
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