Development of Ciona intestinalis juveniles (Through 2nd ascidian stage)
Development of Ciona intestinalis juveniles (Through 2nd ascidian stage)
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DOI：
10.2108/zsj.21.285
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发表时间：
2004-03-01
影响因子：
0.9
通讯作者：
Satoh, N
中科院分区：
文献类型：
--
作者：
Chiba, S;Sasaki, A;Satoh, N
在阅读其基因组序列草图并收集大量cDNA信息后，玻璃海鞘现已成为发育相关基因表达和功能全基因组分析的模式生物。虽然大多数研究都集中在幼虫的结构上，但成年形式的发育与脊椎动物身体的组织和器官的关系也非常有趣。本文对玻璃海鞘幼体至第二海鞘期的组织器官发育进行了详细的观察。这些观察包括检查口虹吸管、腱、口色素和心房色素、心房虹吸管、神经节和神经腺、纵肌、气门、横杠和舌、纵杠和乳头、心脏、消化器官、性腺、内柱、柄和绒毛。这些观察的结果使一个新的青少年发展分期系统成为可能。根据内部器官的发育，我们在这里提出了9个阶段（阶段0类似于阶段8），从游泳幼虫开始，通过青少年进行，直到第二海鞘阶段。这些描述和分期系统提供了一个基础，为研究细胞和分子机制的成年器官和组织的发展，这基底脊索动物。
Following the reading of its draft genome sequence and the collection of a large quantity of cDNA information, Ciona intestinalis is now becoming a model organism for whole-genome analyses of the expression and function of developmentally relevant genes. Although most studies have focused on larval structures, the development of the adult form is also very interesting in relation to tissues and organs of vertebrate body. Here we conducted detailed observations of the development of tissues and organs in Ciona intestinalis larva and juveniles until so-called the 2nd ascidian stage. These observations included examination of the oral siphon, tentacle, oral pigments and atrial pigments, atrial siphon, ganglion and neural gland, longitudinal muscle, stigmata, transverse bar and languet, longitudinal bar and papilla, heart, digestive organ, gonad, endostyle, and stalk and villi. The findings from these observations make a new staging system for juvenile development possible. Based on the development of the internal organs, we propose here nine stages (stage 0 similar to stage 8) starting with swimming larvae and proceeding through juveniles until the 2nd ascidian stage. These descriptions and staging system provide a basis for studying cellular and molecular mechanisms underlying the development of adult organs and tissues of this basal chordate.