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The ontogeny of nanos homologue expression in the oligochaete annelid Tubifex tubifex


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タイトル: The ontogeny of nanos homologue expression in the oligochaete annelid Tubifex tubifex
著者: Mohri, Ki-ichi 著作を一覧する
Nakamoto, Ayaki 著作を一覧する
Shimizu, Takashi 著作を一覧する
キーワード: Nanos
Oligochaete annelid
Tubifex tubifex
Teloblast lineages
発行日: 2016年 1月
出版者: Elsevier
誌名: Gene expression patterns
巻: 20
号: 1
開始ページ: 32
終了ページ: 41
出版社 DOI: 10.1016/j.gep.2015.11.002
抄録: We have cloned and characterized the expression of a nanos homologue (designated Ttu-nos) from the oligochaete annelid Tubifex tubifex. Ttu-nos mRNA is distributed broadly throughout the early cleavage stages. Ttu-nos is expressed in most if not all of the early blastomeres, in which Ttu-nos RNA associates with pole plasms. Ttu-nos transcripts are concentrated to 2d and 4d cells. Shortly after 2d(111) (derived from 2d cell) divides into a bilateral pair of NOPQ proteloblasts, Ttu-nos RNA vanishes from the embryo, which is soon followed by the resumption of Ttu-nos expression in nascent primary blast cells produced by teloblasts. The resumption of Ttu-nos expression occurs only in a subset of teloblast lineages (viz., M, N and Q). After Ttu-nos expression is retained in the germ band for a while, it disappears in anterior-to-posterior progression. At the end of embryogenesis, there is no trace of Ttu-nos expression. Thereafter, growing juveniles do not show any sign of Ttu-nos expression, either. The first sign of Ttu-nos expression is detected in oocytes in the ovary of young adults (ca 40 days after hatching), and its expression continues in growing oocytes that undergo yolk deposition and maturation in the ovisac. (C) 2015 Elsevier B.V. All rights reserved.
資料タイプ: article (author version)
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 清水 隆


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