How Do Trees Grow in Girth? Controversy on the Role of Cellular Events in the Vascular Cambium
| Autor: | Anna Wilczek-Ponce, Wiesław Włoch, Muhammad Iqbal |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Apical cell Phloem Biology 01 natural sciences General Biochemistry Genetics and Molecular Biology Girth (geometry) Trees 03 medical and health sciences Xylem Botany Vascular cambium Vascular tissue General Environmental Science Cambium Applied Mathematics fungi Symplastic growth food and beverages Regular Article General Medicine Meristem Philosophy Initial surface 030104 developmental biology Intrusive growth Elimination of initials General Agricultural and Biological Sciences Cambial circumference 010606 plant biology & botany Woody plant |
| Zdroj: | Acta Biotheoretica |
| ISSN: | 1572-8358 0001-5342 |
| DOI: | 10.1007/s10441-021-09418-y |
| Popis: | Radial growth has long been a subject of interest in tree biology research. Recent studies have brought a significant change in the understanding of some basic processes characteristic to the vascular cambium, a meristem that produces secondary vascular tissues (phloem and xylem) in woody plants. A new hypothesis regarding the mechanism of intrusive growth of the cambial initials, which has been ratified by studies of the arrangement of cambial cells, negates the influence of this apical cell growth on the expansion of the cambial circumference. Instead, it suggests that the tip of the elongating cambial initial intrudes between the tangential (periclinal) walls, rather than the radial (anticlinal) walls, of the initial(s) and its(their) derivative(s) lying ahead of the elongating cell tip. The new concept also explains the hitherto obscure mechanism of the cell event called ‘elimination of initials’. This article evaluates these new concepts of the cambial cell dynamics and offers a new interpretation for some curious events occurring in the cambial meristem in relation to the radial growth in woody plants. |
| Databáze: | OpenAIRE |
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