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[Isolation and expression pattern analysis of rice auxin-induced eIF3a coding gene].

Hong Li¹, Si Shi Shen, Zhi Hong Xu

¹National Laboratory of Plant Molecular Genetics, Institute of Plant Physiology, Shanghai Institutes for Biological Science, Chinese Academy of Sciences, Shanghai, China.

Shi Yan Sheng Wu Xue Bao

|May 20, 2003

Summary

Rice eIF3a1, a key protein synthesis factor, is induced by auxin. This suggests auxin

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Area of Science:

Molecular Biology
Plant Science

Context:

Eukaryotic initiation factors (eIFs) regulate protein synthesis.
eIF3 is the largest initiation factor, with eIF3a as a key subunit.
Plant growth is regulated by hormones like auxin.

Purpose:

To isolate and characterize the rice eIF3a gene (OseIF3a1).
To investigate the expression patterns of OseIF3a1.
To explore the relationship between auxin and OseIF3a1 expression.

Summary:

The rice eIF3a1 gene was isolated, showing significant sequence identity with maize and tobacco homologs.
OseIF3a1 gene consists of 13 exons and 12 introns.
RT-PCR and GUS fusion studies confirmed OseIF3a1 expression in various rice tissues, including roots, shoots, and leaves.

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Impact:

Auxin induction of OseIF3a1 suggests a role in auxin-mediated growth regulation.
This finding may reveal novel insights into translational control mechanisms in plants.
OseIF3a1 characterization provides a foundation for further studies on its specific functions in rice development.