Abstract
Seedlings of Arabidopsis thaliana (cv. Columbia) were used to evaluate dynamic transcriptional-level genome responses to simulated microgravity condition created by 3-D clinorotation. The DNA chip data analysis showed that the plant may respond to simulated microgravity by dynamic induction (up- and down-regulations) of the responsive genes in the genome. The qRT-PCR results on the investigated genes showed that the expression patterns of the genes (molecular response) were generally similar to the physiological response patterns detected in stress-challenged plants. Expression patterns were categorized into short or continual up- or down-regulated patterns, as well as stochastic changes from short- to long-term simulated microgravity stress. The induced genes are then assumed to establish a new molecular plasticity to the newly adjusted genome status in the basic milieu of maintaining homeostasis during the process of adaptation to simulated microgravity.
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Abbreviations
- dCHIP:
-
DNA-chip analyzer
- qRT-PCR:
-
Quantitative real-time transcription polymerase chain reaction
- 3-D clinostat:
-
3-Dimensional clinostat
- IAA:
-
Indole-3-acetic acid
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Soh, H., Auh, C., Soh, WY. et al. Gene expression changes in Arabidopsis seedlings during short- to long-term exposure to 3-D clinorotation. Planta 234, 255–270 (2011). https://doi.org/10.1007/s00425-011-1395-y
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DOI: https://doi.org/10.1007/s00425-011-1395-y