Cells of Sedum telephoides undergoing lethal cellular senescence in response to grafting with Solanum pennellii often possess plasmalemmal tubules (PT). The PT are unbranched, 27-31 nm in diameter, and are bordered by a wall measuring 4.8-5.2 nm in thickness. No regular substructure is discernible in the lumen of the PT. At 36 h after grafting PT extend into the cytoplasm of Sedum cells at the graft interface between Sedum and Solanum. By 10 days after grafting, however, PT are found embedded in newly deposited cell wall. These results indicate that cell wall deposition occurs during the early stages of graft development.
|Original language||English (US)|
|Number of pages||6|
|Journal||Annals of Botany|
|State||Published - Nov 1982|
Bibliographical noteFunding Information:
Supported by grants from Sigma Xi, the American Philosophical Society, and the University Research Committee of Baylor University.
- Cell wall
- Plasmalemmal tubules
- Sedum telephoides, Solanum pennellii