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Updated: Jun 28, 2025

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The transcriptome landscape of developing barley seeds.

Martin Kovacik1,2, Anna Nowicka1,3, Jana Zwyrtková1

  • 1Institute of Experimental Botany, Czech Acad Sci, Centre of Plant Structural and Functional Genomics, Šlechtitelů 31, 779 00 Olomouc, Czech Republic.

The Plant Cell
|April 18, 2024
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Summary
This summary is machine-generated.

This study maps gene expression during barley seed development, identifying key genes and epigenetic factors controlling growth. It reveals dynamic chromatin regulation, especially in the endosperm, crucial for grain development.

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Area of Science:

  • Plant Biology
  • Genomics
  • Epigenetics

Background:

  • Cereal grains like barley are vital food and feed sources.
  • Understanding barley seed development is crucial for crop improvement.

Purpose of the Study:

  • To create a spatiotemporal transcriptomic atlas of developing barley seeds.
  • To identify genes, transcription factors, and epigenetic regulators of barley grain development.

Main Methods:

  • Transcriptomic analysis of barley embryo, endosperm, and maternal tissues from 4-32 days post-pollination.
  • Weighted gene co-expression network analysis.
  • Motif enrichment analysis of transcription factors.
  • Assessment of chromatin regulators and histone modifications (H3K27me3).

Main Results:

  • Identification of tissue-specific marker genes and transcription factor families regulating barley seed development.
  • Demonstration of dynamic epigenetic processes, particularly in endosperm development.
  • Observation of reduced H3K27me3 modification in endosperm tissues and specific developmental genes.

Conclusions:

  • The study provides a comprehensive gene expression atlas for developing barley grains.
  • Epigenetic regulation, including H3K27me3 modification, plays a significant role in barley endosperm development.
  • This resource aids future functional studies on pathways controlling barley grain development.