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Research ArticleDevelopment and Growth Regulation
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Identification of Embryoid-Abundant Genes That Are Temporally Expressed during Pollen Embryogenesis in Wheat Anther Cultures

Thomas L. Reynolds, Sherry L. Kitto
Thomas L. Reynolds
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Sherry L. Kitto
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Published December 1992. DOI: https://doi.org/10.1104/pp.100.4.1744

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Abstract

Uninucleate microspores in anther cultures of bread wheat (Triticum aestivum cv Pavon) are capable of producing haploid pollen embryoids and plants. To gain an understanding of this alternate pathway of pollen development, we constructed a cDNA library to young pollen embryoids, isolated embryoid-specific genes, and analyzed their expression patterns during morphogenesis. Two embryoid-abundant clones, pEMB4 and 94, were expressed very early during culture, suggesting that these genes are associated with development and are not simply expressed as a consequence of differentiation. The accumulation patterns of five cloned mRNAs may indicate the activation of specific genes associated with the major morphological and physiological activities connected with the differentiation of embryoids in vitro. These results suggest that embryoid-abundant gene expression is causally related to this pathway because gene expression is spatially and temporally specific and is not observed when microspores are cultured under noninductive conditions.

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Identification of Embryoid-Abundant Genes That Are Temporally Expressed during Pollen Embryogenesis in Wheat Anther Cultures
Thomas L. Reynolds, Sherry L. Kitto
Plant Physiology Dec 1992, 100 (4) 1744-1750; DOI: 10.1104/pp.100.4.1744

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Identification of Embryoid-Abundant Genes That Are Temporally Expressed during Pollen Embryogenesis in Wheat Anther Cultures
Thomas L. Reynolds, Sherry L. Kitto
Plant Physiology Dec 1992, 100 (4) 1744-1750; DOI: 10.1104/pp.100.4.1744
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Plant Physiology
Vol. 100, Issue 4
December 1992
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More in this TOC Section

  • The rms1 Mutant of Pea Has Elevated Indole-3-Acetic Acid Levels and Reduced Root-Sap Zeatin Riboside Content but Increased Branching Controlled by Graft-Transmissible Signal(s)
  • Bacterial Cellulose-Binding Domain Modulates in Vitro Elongation of Different Plant Cells
  • Gibberellin Dose-Response Regulation of GA4 Gene Transcript Levels in Arabidopsis
Show more DEVELOPMENT AND GROWTH REGULATION

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