Cellular redox-status is associated with regulation of frond division in <Emphasis Type="Italic">Spirodela polyrrhiza</Emphasis> |
| |
| Authors: | Georgia Moschopoulou Iosif Papanastasiou Olga Makri Nikos Lambrou Garyfallia Economou Katerina Soukouli Spiridon E Kintzios |
| |
| Institution: | (1) Laboratory of Plant Physiology, Faculty of Agricultural Biotechnology, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece;(2) Laboratory of Enzyme Technology, Faculty of Agricultural Biotechnology, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece;(3) Laboratory of Agronomy, Faculty of Plant Production, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece |
| |
| Abstract: | We investigated a possible relationship between the levels of reactive oxygen species (ROS) and the stimulation of frond division
of the aquatic plant Spirodela polyrrhiza (duckweed) during a 7-day experimental culture period. In particular, we monitored superoxide concentration using a state-of-the-art
cell biosensor. A considerable reduction in ROS and superoxide concentration was observed during the first 2 days of culture,
whereas duckweed cultures achieved near exponential growth rates after the second day. In addition, apoptotic markers such
as the cytoplasmic concentration of cytochrome c, mitochondrial membrane depolarization and the activity of caspase-3 declined during the culture period and at least before
daughter frond maturation. We suggest that S. polyrrhiza frond division may have been stimulated by the observed reduction of free radicals and the associated avoidance of cell apoptotic
pathways in cultured plants. |
| |
| Keywords: | Biosensor Frond division Reactive oxygen species Spirodela polyrrhiza Superoxide |
| 本文献已被 PubMed SpringerLink 等数据库收录！ |
|
