Distribution of calcium in the suctorian Discophrya collini: An X-ray microanalytical study |
| |
| Authors: | Carole M. Hackney Ronald D. Butler |
| |
| Affiliation: | Cytology Unit, Departments of Botany and Zoology, University of Manchester, Manchester M13 9PL, England |
| |
| Abstract: | Discophrya collini is a free-living suctorian with tentacles which can be induced to contract by means of a range of experimental stimuli, including the application of CaCl2 and MgCl2 but not BaCl2. X-ray microanalysis of glutaraldehydeonly fixed cells shows Ca to be present in the cytoplasmic ground substance and elongate dense bodies (EDB). In 10?1 M CaCl2-treated cells, calcium levels remain unchanged except for a three-fold increase in the EDB. Treatment of cells with 10?1 M MgCl2 and 10?1 M BaCl2 does not result in their detection in the cell. It is suggested that EDB may act as reservoirs controlling levels of calcium. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
