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Obtaining High-Quality Transcriptome Data from Cereal Seeds by a Modified Method for Gene Expression Profiling
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Published on: May 21, 2020

Gene expression profile changes in germinating rice.

Dongli He1, Chao Han1, Pingfang Yang1

  • 1Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, ChinaGraduate University of Chinese Academy of Sciences, Beijing 100049, China.

Journal of Integrative Plant Biology
|September 14, 2011
PubMed
Summary
This summary is machine-generated.

Rice seed germination relies on water absorption. This study identified 39 differentially expressed proteins during imbibition, revealing key molecular changes in seed reserves and metabolism crucial for early plant life.

Keywords:
germinationimbibitionionization‐time of flightmatrix assisted laser desorptionproteomicsrice seedsemi‐quantitative real time polymerase chain reactiontwo‐dimensional gel electrophoresis

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Area of Science:

  • Plant Biology
  • Molecular Biology
  • Biochemistry

Background:

  • Seed germination is a critical stage in the plant life cycle, initiated by water absorption (imbibition).
  • Understanding the molecular mechanisms governing seed germination is essential for agricultural productivity and ecological studies.

Purpose of the Study:

  • To investigate the dynamic changes in protein profiles during the initial 48 hours of rice seed imbibition.
  • To identify specific proteins and their associated genes involved in the molecular regulation of seed germination.

Main Methods:

  • Two-dimensional gel electrophoresis (2D-PAGE) was employed to analyze protein expression patterns.
  • Semi-quantitative real-time polymerase chain reaction (sqRT-PCR) was used to validate gene expression levels corresponding to identified proteins.

Main Results:

  • Thirty-nine differentially expressed proteins were identified, with 19 down-regulated and 20 up-regulated.
  • Down-regulated proteins included storage proteins and seed development/desiccation proteins, indicating reserve mobilization.
  • Up-regulated proteins were primarily associated with catabolism, supporting metabolic reactivation.

Conclusions:

  • Protein expression changes during rice seed imbibition reflect the transition from dormancy to active growth.
  • Gene expression largely mirrored protein level changes, indicating coordinated transcriptional and post-transcriptional regulation.
  • This study provides insights into the molecular basis of seed germination, crucial for understanding early plant development.