Leljak-Levanic, Dunja and Juranic, Martina and Sprunck, Stefanie (2013) De novo zygotic transcription in wheat (Triticum aestivum L.) includes genes encoding small putative secreted peptides and a protein involved in proteasomal degradation. PLANT REPRODUCTION, 26 (3). pp. 267-285. ISSN 2194-7953, 2194-7961
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Wheat is one of the world's most important crops, and increasing grain yield is a major challenge for the future. Still, our knowledge about the molecular machineries responsible for early post-fertilization events such as zygotic reprogramming, the initial cell-specification events during embryogenesis, and the intercellular communication between the early embryo and the developing endosperm is very limited. Here, we describe the identification of de novo transcribed genes in the wheat zygote. We used wheat ovaries of defined post-fertilization stages to isolate zygotes and early embryos, and identified genes that are specifically induced in these particular stages. Importantly, we observed that some of the zygotic-induced genes encode proteins with similarity to secreted signaling peptides such as TAPETUM DETERMINANT 1 and EGG APPARATUS 1, and to MATH-BTB proteins which are known substrate-binding adaptors for the Cullin-3-based ubiquitin E3 ligase. This suggests that both cell-cell signaling and targeted proteasomal degradation may be important molecular events during zygote formation and the progression of early embryogenesis.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PATTERN-FORMATION; EARLY EMBRYOGENESIS; SEED DEVELOPMENT; CELL FATE; EGG CELLS; PLANT EMBRYOGENESIS; ARABIDOPSIS ANTHER; UBIQUITIN LIGASES; RECEPTOR KINASE; IN-VITRO; Wheat; Zygote; Proembryo; Cell-cell communication; Cell specification; Polarity; EA1; TPD1; MATH-BTB |
| Subjects: | 500 Science > 580 Botanical sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Pflanzenwissenschaften > Lehrstuhl für Zellbiologie und Pflanzenphysiologie (Prof. Dr. Klaus Grasser) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 02 Apr 2020 08:37 |
| Last Modified: | 02 Apr 2020 08:37 |
| URI: | https://pred.uni-regensburg.de/id/eprint/16157 |
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