Development of Potato Minitubers in Microgravity
| Autor: | Valentina Baranenko, Elizabeth Kordyum, E.M. Nedukha, Vladimir Samoilov |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Physiology
Tubercle Starch Plant Science Biology Tissue culture chemistry.chemical_compound Botany Parenchyma Amyloplast Plastids Solanum tuberosum Plant Stems Weightlessness food and beverages Cell Biology General Medicine Space Flight biology.organism_classification Lipids Mitochondria Microscopy Electron chemistry Solanaceae |
| Zdroj: | Plant and Cell Physiology. 38:1111-1117 |
| ISSN: | 1471-9053 0032-0781 |
| DOI: | 10.1093/oxfordjournals.pcp.a029095 |
| Popis: | Stem segments of aseptically grown potato (Solanum tuberosum L. cv. Zarevo) were cultivated for 4 weeks under laboratory conditions and were then grown for 8 d on board the "Mir" orbital space station. Timing was such that minitubers initiated and developed during the 8 d on the "Mir". Under space flight and stationary conditions, spherical minitubers were formed with no statistically significant differences in either the frequency of tuber formation or tuber size. These observations are the first to document the formation of vegetative reproductive organs and of well developed amylogenic storage tissue during the microgravity conditions of orbital space flight. In these minitubers, a majority of the starch was stored in parenchyma, with numerous amyloplasts per cell. In space flight tissue, however, grain size of starch was decreased and lamellae within the amyloplasts was locally enlarged. Furthermore, mitochondria of these tissues were characterized by increased matrix density and well developed cristae. |
| Databáze: | OpenAIRE |
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