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Related Experiment Video

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Temporal patterns of gene expression in developing maize endosperm identified through transcriptome sequencing.

Guosheng Li1, Dongfang Wang1, Ruolin Yang1

  • 1School of Plant Sciences, University of Arizona, Tucson, AZ 85721;

Proceedings of the National Academy of Sciences of the United States of America
|May 14, 2014
PubMed
Summary
This summary is machine-generated.

This study maps gene expression in developing maize endosperm, revealing temporal programs that control its growth and function. Understanding these networks is key to improving crop yield and quality.

Keywords:
mRNA localizationtime series

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Area of Science:

  • Plant Biology
  • Genetics
  • Developmental Biology

Background:

  • The endosperm is a crucial nutrient-storing tissue in angiosperms, vital for embryo development and human food sources.
  • Regulatory gene networks governing endosperm proliferation and differentiation remain largely uncharacterized.
  • Maize endosperm is a significant resource for food, feed, and renewable materials.

Purpose of the Study:

  • To create a preliminary atlas of spatiotemporal gene expression patterns in the developing maize kernel and endosperm.
  • To identify temporal gene expression programs, including transcription factors, that regulate endosperm development.
  • To lay the groundwork for understanding the genetic mechanisms controlling seed yield and quality.

Main Methods:

  • Whole transcriptome mRNA profiling of maize kernels and endosperm.
  • Analysis at eight successive developmental stages within the first 12 days post-pollination.
  • Correlation analysis between gene expression patterns and cellular/metabolic programs.

Main Results:

  • Identified hundreds of transcription factor genes with temporally regulated expression during endosperm development.
  • Observed a strong correlation between sequential gene expression sets and distinct cellular/metabolic programs.
  • Documented spatiotemporal patterns of gene expression across different endosperm compartments.
  • Generated a preliminary gene expression atlas for the developing maize endosperm.

Conclusions:

  • The study provides a foundational dataset for dissecting gene regulatory networks in maize endosperm development.
  • The identified temporal gene expression programs are linked to specific developmental processes and cellular functions.
  • This research supports future efforts to enhance seed yield and nutritional quality through genetic manipulation.