Polymorphism in the symmetries of gastric pouch arrangements in the sea anemone D. lineata.
Polymorphism in the symmetries of gastric pouch arrangements in the sea anemone D. lineata.
复制标题
DOI：
10.1186/s40851-021-00180-0
复制
发表时间：
2021-09-06
影响因子：
2.7
通讯作者：
Fujimoto K
中科院分区：
文献类型：
--
作者：
Sarper SE;Hirai T;Matsuyama T;Kuratani S;Fujimoto K
身体部位的对称性是动物系统发育的一个显著特征。刺胞动物的内脏器官，如胃囊和肌肉，都具有双侧对称性和放射对称性。然而，不同的对称性如何在发展过程中出现仍然是未知的。在这里，我们报告了种内变异的对称排列的胃袋，肌肉和管纹，珊瑚虫特有的器官，驱动水进入有机体，在D。lineata（Diadumenidae，Actiniaria）。我们发现，内部器官的位置安排显然受到限制，无论是双径向或双边对称的数量取决于管形。基于形态学观察，内部器官定位的数学模型被用来预测负责双径向和两侧对称性的发育背景。在该模型中，我们假设胃袋的规格是精心策划的侧抑制和激活，从而导致不同的对称性取决于管纹的数量。因此，我们建议，一个共同的发展计划可以产生双边或双径向对称性取决于在早期发展阶段形成的管形的数量。在线版本包含补充材料，可通过10.1186/s40851-021-00180-0获得。
Symmetry in the arrangement of body parts is a distinctive phylogenetic feature of animals. Cnidarians show both bilateral and radial symmetries in their internal organs, such as gastric pouches and muscles. However, how different symmetries appear during the developmental process remains unknown. Here, we report intraspecific variations in the symmetric arrangement of gastric pouches, muscles, and siphonoglyphs, the Anthozoan-specific organ that drives water into the organism, in D. lineata (Diadumenidae, Actiniaria). We found that the positional arrangement of the internal organs was apparently constrained to either biradial or bilateral symmetries depending on the number of siphonoglyphs. Based on the morphological observations, a mathematical model of internal organ positioning was employed to predict the developmental backgrounds responsible for the biradial and bilateral symmetries. In the model, we assumed that the specification of gastric pouches is orchestrated by lateral inhibition and activation, which results in different symmetries depending on the number of siphonoglyphs. Thus, we propose that a common developmental program can generate either bilateral or biradial symmetries depending on the number of siphonoglyphs formed in the early developmental stages. The online version contains supplementary material available at 10.1186/s40851-021-00180-0.
登录
查看更多内容
影响因子：
4
作者：
Finnerty, JR
通讯作者：
Finnerty, JR
影响因子：
2
作者：
Berking, Stefan
通讯作者：
Berking, Stefan
影响因子：
2.9
作者：
Newcomer, Katherine;Flenniken, Megan M.;Carlton, James T.
通讯作者：
Carlton, James T.
影响因子：
4.6
作者：
Genikhovich, Grigory;Technau, Ulrich
通讯作者：
Technau, Ulrich
影响因子：
56.9
作者：
Finnerty, JR;Pang, K;Martindale, MQ
通讯作者：
Martindale, MQ