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DWARF WITH SLENDER LEAF1 Encoding a Histone Deacetylase Plays Diverse Roles in Rice Development.

Fumika Clara Kubo1, Yukiko Yasui1, Yoshihiro Ohmori2

  • 1Department of Biological Sciences, School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8654 Japan.

Plant & Cell Physiology
|November 8, 2019
PubMed
Summary
This summary is machine-generated.

The histone deacetylase (HDAC) gene DSL1 is crucial for rice development, controlling plant architecture, leaf morphology, and cell division. Its mutation causes semi-dwarfism and slender leaves, highlighting its diverse roles.

Keywords:
DwarfHistone deacetylaseInflorescence developmentLeaf developmentRice (Oryza sativa)

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Area of Science:

  • Plant molecular biology
  • Genetics and genomics

Background:

  • Histone acetylation/deacetylation regulates plant development and stress responses.
  • Histone deacetylases (HDACs) are key enzymes in deacetylation, often linked to gene silencing.
  • Little is known about HDAC function in rice (Oryza sativa) development.

Purpose of the Study:

  • To characterize a novel rice mutant with developmental defects.
  • To identify the gene responsible for these defects and elucidate its function.
  • To understand the role of HDACs in rice development.

Main Methods:

  • Characterization of a new rice mutant, dwarf with slender leaf1 (dsl1).
  • Phenotypic analysis of vegetative and reproductive development.
  • Gene cloning and sequence analysis.
  • In situ hybridization to analyze cell division.

Main Results:

  • The dsl1 mutant exhibits semi-dwarfism, short/narrow leaves, and altered vascular bundles.
  • DSL1 encodes a histone deacetylase (HDAC) from the RPD3/HDA1 family.
  • The mutation affects cell division and differentiation, impacting plant architecture.
  • DSL1 influences both vegetative and reproductive development, including inflorescence and spikelet formation.

Conclusions:

  • The rice HDAC DSL1 plays essential and diverse roles in plant development.
  • DSL1 is involved in regulating cell division and differentiation processes.
  • This study provides insights into HDAC function in a major crop species.