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Investigating Interactions Between Histone Modifying Enzymes and Transcription Factors in vivo by Fluorescence Resonance Energy Transfer
Published on: October 14, 2022
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Species-specific function of conserved regulators in orchestrating rice root architecture
Tushar Garg1, Zeenu Singh1, Kunchapu Chennakesavulu1
1Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Uttarakhand 247667, India.
Development (Cambridge, England)
|April 8, 2022
Summary
Rice crown root development involves specific transcription factors and auxin regulation. These factors control root architecture, with some having evolved species-specific functions.
Area of Science:
- Plant Biology
- Genomics
- Developmental Biology
Background:
- Grasses possess a unique fibrous root system derived from shoot-borne adventitious/crown roots.
- The molecular mechanisms governing crown root development are not well understood.
Purpose of the Study:
- To elucidate the genome-wide transcriptional landscape during rice crown root primordia development.
- To investigate the roles of WUSCHEL-RELATED HOMEOBOX (WOX) and PLETHORA (PLT) gene families in root architecture.
Main Methods:
- Genome-wide transcriptional profiling of rice (Oryza sativa) crown root primordia.
- Functional analysis of WOX and PLT transcription factors in rice and Arabidopsis.
Main Results:
- Identified auxin response signatures and spatio-temporal expression of epigenetic modifiers and transcription factors.
- WOX10 and PLT1 regulate both crown and lateral roots; PLT2 is specific to lateral roots.
- OsPLT genes can rescue Arabidopsis lateral root defects, indicating conserved functions.
Conclusions:
- Established a molecular framework for tissue transdifferentiation in root primordia establishment.
- Demonstrated non-redundant and species-specific roles for rice WOX and PLT genes in root architecture.
- Highlighted the evolution of conserved factors with species-specific transcriptional regulation for root development.
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