排序方式: 共有2条查询结果,搜索用时 6 毫秒
1
1.
Two primary ciliary bands, the prototroch and metatroch, are required for locomotion and in the feeding larvae of many spiralians. The metatroch has been reported to have different cellular origins in the molluscs Crepidula fornicata and Ilyanassa obsoleta, as well as in the annelid Polygordius lacteus, consistent with multiple independent origins of the spiralian metatroch. Here, we describe in further detail the cell lineage of the ciliary bands in the gastropod mollusc I. obsoleta using intracellular lineage tracing and the expression of an acetylated tubulin antigen that serves as a marker for ciliated cells. We find that the I. obsoleta metatroch is formed primarily by third quartet derivatives as well as a small number of second quartet derivatives. These results differ from the described metatrochal lineage in the mollusc C. fornicata that derives solely from the second quartet or the metatrochal lineage in the annelid P. lacteus that derives solely from the third quartet. The present study adds to a growing body of literature concerning the evolution of the metatroch and the plasticity of cell fates in homologous micromeres in spiralian embryos. 相似文献
2.
Sarah L. O’Beirne Jacqueline Salit Juan L. Rodriguez-Flores Michelle R. Staudt Charbel Abi Khalil Khalid A. Fakhro Amal Robay Monica D. Ramstetter Iman K. Al-Azwani Joel A. Malek Mahmoud Zirie Amin Jayyousi Ramin Badii Ajayeb Al-Nabet Al-Marri Maria J. Chiuchiolo Alya Al-Shakaki Omar Chidiac Maey Gharbiah Abdulbari Bener Dora Stadler Neil R. Hackett Jason G. Mezey Ronald G. Crystal 《PloS one》2016,11(7)
1