Cell Wall Perforation in Laticifers of Papaver somniferum L.
- 1 December 1977
- journal article
- research article
- Published by University of Chicago Press in Botanical Gazette
- Vol. 138 (4) , 402-408
- https://doi.org/10.1086/336940
Abstract
Cell wall perforation in the articulated anastomozing laticifers of the opium poppy, P. somniferum L., was examined by EM. Perforation resulted from a gradual thinning of the walls on both sides of the middle lamella. Thinning occurred uniformly over transverse walls during articulation and at localized sites along lateral walls during anastomosis. Electron-dense globular deposits were seen at perforation sites; their function in the perforation process was not apparent. The progressive and simultaneous thinning of the cell wall on either side of the middle lamella at the site of a developing perforation suggests that wall-degrading enzymes (cellulases), rather than pressure, may be involved in the wall-perforation process.Keywords
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