Intensive change of inclination of cambial initials in Picea abies (L.) Karst, tumours

• Published in: Trees (Berlin, West) West), 2001-12, Vol.15 (8), p.498-502
• Main Authors: WŁOCH, Wiesław, MAZUR, Ewa, KOJS, Paweł
• Format: Article
• Language: English
• Subjects: Biological and medical sciences; Cell differentiation; Cell physiology; Fundamental and applied biological sciences. Psychology; Plant physiology and development; Tumors
• ISSN: 0931-1890; 1432-2285
• DOI: 10.1007/s00468-001-0127-5

Changes in the inclination of cambial fusiform cells producing wavy grain wood in spruce trunk tumours were investigated. The rate of changes of cell inclination depends on events such as intrusive growth between periclinal walls of cells of neighbouring files and unequal periclinal divisions. Intrusive growth of initial cell ends between radial walls does not affect the change in cell inclination. The only reason for such change is the intrusive growth of initial cell ends between periclinal cell walls of neighbouring files. Initial cells do not form a continuous, integral layer. After periclinal division of initial cells the status of the initial is defined by the initial surface. After periclinal divisions of mother cells packets of cells are produced. In cambium, which does not rearrange, packets of cells originating from the same initial cell are located in one file. Cells in these packets do not usually grow intrusively and do not change their position. In tumorous cambium, packets are dislocated in periclinal planes. In the tangential surface a very large and rapid change in inclination of fusiform cells was observed. In spite of this change, which causes heterogeneous files, the order (arrangement) of the files was not disturbed.[PUBLICATION ABSTRACT]