Biological effects of weightlessness and clinostatic conditions registered in cells of root meristem and cap of higher plants
| Autor: | N.A. Belyavskaya, E.M. Nedukha, K.M. Sytnik, V.A. Tarasenko, Elizabeth Kordyum |
|---|---|
| Rok vydání: | 1983 |
| Předmět: |
Atmospheric Science
Rotation Meristem Arabidopsis Golgi Apparatus Aerospace Engineering Biology Spaceflight Plant Roots law.invention symbols.namesake law Plastids Plastid Mitosis Weightlessness Simulation Cell Nucleus Weightlessness Peas Astronomy and Astrophysics Space Flight Golgi apparatus Mitochondria Cell biology Microscopy Electron Geophysics Plant Root Cap Space and Planetary Science symbols General Earth and Planetary Sciences Cucumis sativus Cytokinesis Clinostat Gravitation |
| Zdroj: | Advances in Space Research. 3:251-255 |
| ISSN: | 0273-1177 |
| DOI: | 10.1016/0273-1177(83)90065-0 |
| Popis: | Research in cellular reproduction, differentiation and vital activity, i.e. processes underlying the development and functioning of organisms, plants included, is essential for solving fundamental and applied problems of space biology. Detailed anatomical analysis of roots of higher plants grown on board the Salyut 6 orbital research station show that under conditions of weightlessness for defined duration mitosis, cytokinesis and tissue differentiation in plant vegetative organs occur essentially normally. At the same time, certain rearrangements in the structural organization of cellular organelles - mainly the plastid apparatus, mitochondria, Golgi apparatus and nucleus - are established in the root meristem and cap of the experimental plants. This is evidence for considerable changes in cellular metabolism. The structural changes in the subcellular level arising under spaceflight conditions are partially absent in clinostat experiments designed to simulate weightlessness. Various clinostatic conditions have different influences on the cell structural and functional organization than does space flight. It is suggested that alterations of cellular metabolism under weightlessness and clinostatic conditions occur within existing genetic programs. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|