Establishment of pigment cell lineage in embryos of the sea urchin,Hemicentrotus pulcherrimus
書誌事項
- タイトル別名
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- Establishment of pigment cell lineage in embryos of the sea urchin Hemicentrotus pulcherrimus
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<jats:p>In an attempt to estimate the number of pigment precursor cells in sea urchin embryos, DNA synthesis and cell divisions were blocked with aphidicolin from various stages of development. Interestingly, pigment cells differentiated on a normal time schedule, even if the embryos were treated from late cleavage stages on. In most of the embryos treated from 10 h on, 10–15 pigment cells differentiated. Thereafter, the number of pigment cells in the aphidicolin‐treated embryos further increased, as the initiation of the treatment was delayed. On the other hand, total cell volumes in the pigment lineage, calculated from the averaged number and diameter of differentiated pigment cells, were almost the same irrespective of the time of the initiation of aphidicolin treatment. This indicated that the increase in the number was caused by divisions of the pre‐existing cells in the pigment lineage. Thus, the founder cells that exclusively produce pigment cells could be identified. They are nine times‐cleaved blastomeres and specified by 10 h post‐fertilization. The obtained results also clarified the division schedule in the pigment lineage; the founder cells divide once (10th) until hatching, and divide once more (11th) by the end of gastrulation.</jats:p>
収録刊行物
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- Development, growth & differentiation
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Development, growth & differentiation 42 (1), 41-51, 2000-02
Kobe : Japanese Society of Developmental Biologists ; 1969-2014
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詳細情報 詳細情報について
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- CRID
- 1520009409400345984
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- NII論文ID
- 10012239191
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- NII書誌ID
- AA00627804
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- ISSN
- 00121592
- 1440169X
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- NDL書誌ID
- 4986143
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- 本文言語コード
- en
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- NDL 雑誌分類
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- ZR2(科学技術--生物学--生化学)
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- データソース種別
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- NDL
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