場次三 10/28(五), 13:30-14:30/英文演講/適合對象: 成人
講題: Stem cell biology in plant roots
主講人: Dr. Masashi Yamada
會議號: 2519 283 5376 會議密碼: bcst1028
In plant development,meristems are continuously producing new
organs and tissues depending on the environmental signals over their entire lifespans.
Therefore, it is essential to research how meristems regulate plant development response to
environmental signals to understand plant development and to improve crop yields under stress
conditions. Stem cell niche and root meristem size are maintained by intercellular interactions
and signaling networks of a peptide hormone named Root Meristem Growth Factor 1 (RGF1).
Determining how RGF1 regulates root meristem development is essential for a proper understanding
of stem cell function. Recently, I reported that RGF1 controls root development by modulating
Reactive Oxygen Species (ROS) distributions along Arabidopsis root developmental zones.
The ROS alteration by RGF1 resulted in the broader localization of the root meristem master
regulator protein (PLT2). Finally, accumulated PLT2 protein formed the larger meristem.
Stem cells are very important tissues in plants. However, stem cells are sensitive to
environmental stresses. Usually, the plants with larger meristems are more resistant to
stresses. To improve crop yields, we will apply these technologies to crops.
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