Mechanisms of stress response in the root stem cell niche
| Autor: | Victoria Mironova, Elena V. Zemlyanskaya, Jian Xu, Elena V. Ubogoeva |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Physiology DNA damage Meristem Arabidopsis Molecular Plant Physiology Plant Science Biology Plant Roots 01 natural sciences quiescent center stress 03 medical and health sciences Auxin stem cell niche Review Papers chemistry.chemical_classification Arabidopsis Proteins AcademicSubjects/SCI01210 Regeneration (biology) fungi food and beverages ROS Stem cell niche Cell biology 030104 developmental biology chemistry regeneration Stele Stem cell Function (biology) 010606 plant biology & botany |
| Zdroj: | Journal of Experimental Botany, 72, 6746-6754 Journal of Experimental Botany, 72, 19, pp. 6746-6754 Journal of Experimental Botany |
| ISSN: | 0022-0957 |
| Popis: | Environmental stress preferentially induces death of stem cells and their early descendants, which temporally stimulates the division of quiescent center cells but restricts or stops stem cell division. As plants are sessile organisms unable to escape from environmental hazards, they need to adapt for survival. The stem cell niche in the root apical meristem is particularly sensitive to DNA damage induced by environmental stresses such as chilling, flooding, wounding, UV, and irradiation. DNA damage has been proven to cause stem cell death, with stele stem cells being the most vulnerable. Stress also induces the division of quiescent center cells. Both reactions disturb the structure and activity of the root stem cell niche temporarily; however, this preserves root meristem integrity and function in the long term. Plants have evolved many mechanisms that ensure stem cell niche maintenance, recovery, and acclimation, allowing them to survive in a changing environment. Here, we provide an overview of the cellular and molecular aspects of stress responses in the root stem cell niche. |
| Databáze: | OpenAIRE |
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