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Related Experiment Video

Updated: Aug 22, 2025

Agrobacterium-Mediated Genetic Transformation, Transgenic Production, and Its Application for the Study of Male Reproductive Development in Rice
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OsMADS58 Stabilizes Gene Regulatory Circuits during Rice Stamen Development.

Liping Shen1,2, Feng Tian1,3,4,5, Zhukuan Cheng6

  • 1State Key Laboratory of Protein & Plant Gene Research, Peking University, Beijing 100871, China.

Plants (Basel, Switzerland)
|November 11, 2022
PubMed
Summary
This summary is machine-generated.

The OsMADS58 gene in rice is crucial for stamen development. CRISPR gene editing revealed its role in stabilizing gene regulatory networks during early flower development.

Keywords:
OsMADS58gene regulatory circuitsmeiosisrice stamentapetum

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Area of Science:

  • Plant Molecular Biology
  • Genetics
  • Developmental Biology

Background:

  • OsMADS58 is a C-class MADS box protein in rice (Oryza sativa).
  • Previous studies using a transposon insertion mutant (osmads58 dSpm) suggested a role in stamen development, but a null mutation was lacking.
  • The precise function of OsMADS58 in reproductive organ development remained unclear.

Purpose of the Study:

  • To elucidate the function of OsMADS58 in rice stamen development.
  • To investigate the molecular mechanisms underlying OsMADS58's role.
  • To analyze the impact of OsMADS58 on gene regulatory networks.

Main Methods:

  • CRISPR-Cas9 gene editing was used to create an osmads58 knockout mutant.
  • Phenotypic analysis of the mutant, including germ cell development and meiosis.
  • Gene expression analysis of OsMADS58 target genes and related pathways.
  • Comparison of CRISPR mutant with transposon insertion mutant (osmads58 dSpm).

Main Results:

  • The CRISPR knockout mutant (osmads58) displayed significant defects: anomalous diploid germ cells, aberrant meiosis, and delayed tapetum degeneration.
  • The CRISPR mutant showed more pronounced alterations in OsMADS58 target gene expression compared to the dSpm mutant.
  • Transcriptional regulatory circuits in early stamen development (stages 4-6) were substantially altered in the CRISPR line.
  • Multiple pathways involved in early stamen development were affected.

Conclusions:

  • OsMADS58 plays a critical role in stabilizing gene regulatory circuits during early rice stamen development.
  • The pleiotropic effects of OsMADS58 are linked to its function in maintaining the integrity of developmental gene networks.
  • This study provides a network-based perspective on the regulatory mechanisms of early stamen development in plants.