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Placode formation and generation of gonadotropin-releasing hormone (GnRH) neurons in ascidians.
https://sucra.repo.nii.ac.jp/records/14270
https://sucra.repo.nii.ac.jp/records/142702cadb416-8179-42d0-95fa-e95412480224
名前 / ファイル | ライセンス | アクション |
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A1002910.pdf (1.1 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2010-10-07 | |||||
タイトル | ||||||
タイトル | Placode formation and generation of gonadotropin-releasing hormone (GnRH) neurons in ascidians. | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | ascidian | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | GnRH neuron | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | neurogenesis | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | olfactory placode | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | dorsal strand | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | chordate | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Olfactores | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
寺門, 潔
× 寺門, 潔 |
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著者 ローマ字 | ||||||
テラカド, キヨシ | ||||||
著者 所属 | ||||||
埼玉大学 | ||||||
著者 所属(別言語) | ||||||
Innovative Research Organization, Saitama University | ||||||
書誌情報 |
Zoological science p. 398-405, 発行日 2009 |
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年月次 | ||||||
2009-6 | ||||||
出版者名 | ||||||
出版者 | Zoological Society of Japan | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 02890003 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Neurogenic placodes, a chordate innovation, generate several neuronal populations, including gonadotropin-releasing hormone (GnRH) neurons which are crucial for vertebrate and solitary ascidian urochordate reproduction. The dorsal strand placode of ascidians is derived from the anterior ridge of the embryonic neural plate and thus shares a common developmental origin and expression of various transcription factors with vertebrate placodes. Despite their importance for understanding vertebrate origins, the evolutionary and developmental origins of the neurogenic placode remain obscure. Here I demonstrate the formation of an elaborate neurogenic placode, which forms the dorsal strand, on part of the neural gland epithelium in a solitary ascidian urochordate, Halocynthia roretzi. Two modes of GnRH neurogenesis in the dorsal strand (a peripheral organ) and the migration of GnRH neurons into the brain along the visceral nerve are also described. Ontogenetically, GnRH neurons are first detected in the dorsal strand and cerebral ganglion of very young juveniles at almost the same time, demonstrating that ascidians possess morphological and developmental features in common with vertebrates. These results further indicate that the onset of peripheral GnRH neurogenesis and the ability of neurons to migrate into the brain predate the divergence of ascidians and vertebrates. Thus, based on the generation of GnRH heurons, the dorsal strand in ascidians may be homologous to the vertebrate olfactory placode. These organs are derived from the anterior region of the embryonic neural plate, which expresses several transcription factors that invertebrate chordates and vertebrates have in common. These results provide unequivocal support for the clade Olfactores (tunicates + vertebrates). | |||||
注記 | ||||||
内容記述タイプ | Other | |||||
内容記述 | PMID: 19583498 | |||||
版 | ||||||
[出版社版] | ||||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
資源タイプ | ||||||
内容記述タイプ | Other | |||||
内容記述 | text | |||||
フォーマット | ||||||
内容記述タイプ | Other | |||||
内容記述 | application/pdf | |||||
作成日 | ||||||
日付 | 2010-10-07 | |||||
日付タイプ | Created | |||||
アイテムID | ||||||
A1002910 |