DATE2024.09.27 #Press Releases
Light determines the meristem fate during plant regeneration
—Expectations for improving regeneration efficiency by tuning light conditions—
Summary
A research team led by Junior Research Associate Yu Chen of the RIKEN Center for Sustainable Resource Science (at the time of their research: PhD student, Graduate School of Science, The University of Tokyo, currently: Postdoctoral Researcher, Cell Function Research Team), Team Leader Keiko Sugimoto (concurrently: Professor, Graduate School of Science, The University of Tokyo), and Professor Takamasa Suzuki of the College of Bioscience and Biotechnology, Chubu University, and colleagues has elucidated the molecular mechanism through which light controls the regeneration of new meristems.
In this study, the joint research team discovered that light signals suppress root formation from pluripotent callus and promote shoot (stem and attached leaves) regeneration. ELONGATED HYPOCOTYL 5 (HY5), a transcription factor important for light signaling, was found to play a central role in controlling the fate of new meristems. Furthermore, early activation of photosynthesis is critical for shoot development, which is transcriptionally regulated downstream of the HY5-dependent pathway.
The study was published in the online edition of the scientific journal Plant Physiology on September 24.
Figure：HY5-mediated light signaling determines the fate of new meristems in plant regeneration
Links：RIKEN, Chubu University (in Japanese)
Journal
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Journal name Plant PhysiologyTitle of paper