Open AccessOntogenesis and structure of phelloid in Viburnum opulus L.
Author(s) -
Marzena Wacowska,
J. A. Tarkowska
Publication year - 2014
Publication title -
acta societatis botanicorum poloniae
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 29
eISSN - 2083-9480
pISSN - 0001-6977
DOI - 10.5586/asbp.1983.012
Subject(s) - thickening , pectin , botany , lignin , cell wall , cellulose , suberin , electron microscope , division (mathematics) , staining , chemistry , biology , biochemistry , physics , polymer science , optics , mathematics , arithmetic , genetics
The ontogenesis and structure of phelloid cells was studied in the cork tissue of Viburnum opulus L. Phelloid was found to form as the result of division of various cells of the phellogen zone (from phellogen proper to subepidermal cells). There are quantitative differences in the phelloid which forms characteristic thickenings in its inner tangential walls in one- and may-year-old stems. These thickenings contain pectin compounds, cellulose and lignin but no suberin. Preliminary observations in the electron microscope did not allow identification of phelloid cells earlier than in the period when thickening of their walls begins. The strong contrast staining of protoplasts in these cells is noteworthy