2026-03-14T09:28:24Z https://air.repo.nii.ac.jp/oai

oai:air.repo.nii.ac.jp:00002695 2023-07-25T11:36:39Z 597:598:1000:1083

Ascidian Peribranchial Epithelium Cells May Possess the Information of Visceral Pattern ISHII, Teruhisa SAITO, Yasunori TANEDA, Yasuho ascidian chimeras visceral pattern color pattern offspring positional information L-R axial polarity bilateral symmetry In the budding ascidian Polyandrocarpa misakiensis, chimeric zooids are induced by the fusion of two different adult body fragments. If each body fragments was derived from a different visceral pattern zooid (cf, normal body pattern zooid and situs inversus or reversed zooid), some types of chimeric zooids were known to be produced. Using two different color phenotypes, white-spot strain and spotless one, it is confirmed that chimeric zooids are surely produced. In this study, we made chimeric zooids between body fragments with reversed white-spot and ones with normal spotless, and analyzed offspring of the chimeric zooids. The chimeric zooids produced blastozooids with new combination of color pattern and visceral pattern, that is, blastozooids with normal white-spot or ones with reversed spotless. In blastogenic generation, palleal budding, a bud consists of two envelopes of cell layers: the epidermal and the peribranchial epithelium. Previously, we found that the epidermal epithelium is the carrier of the color pattern. Therefore, our results strongly suggest that the information of determining of visceral pattern (L-R axial polarity) exists in the peribranchial epithelium in asexual reproduction ie., palleal budding. 秋田大学教育文化学部 2016-03-01 jpn departmental bulletin paper VoR http://hdl.handle.net/10295/3049 https://air.repo.nii.ac.jp/records/2695 13485296 AA12685502 秋田大学教育文化学部研究紀要. 人文科学・社会科学自然科学 71 71 78 https://air.repo.nii.ac.jp/record/2695/files/kbjs71(71).pdf application/pdf 2.3 MB 2017-02-16