Os03g0727000
The rice Os03g0727000 was reported as OSH1 in 1996 [1] by researchers from Japan.
Contents
Annotated Information
Function
- Homeobox genes encode a large family of homeodomain proteins that play a key role in the pattern formation of animal embryos.
- By analogy, homeobox genes in plants are thought to mediate important processes in their embryogenesis.
- OSH1 is not directly associated with organ differentiation, but may be related to a regulatory process before or independent of the organ determination.
- OSH1 plays an important role in regionalization of cell identity during early embryogenesis.
Expression
- In situ hybridization analysis revealed that in the wild-type embryo, OSH1 was first expressed at the globular stage, much earlier than organogenesis started, in a ventral region where shoot apical meristem and epiblast would later develop.
- This localized expression of OSH1 indicates that the cellular differentiation has already occurred at this stage.
- At later stages after organogenesis had initiated, OSH1 expression was observed in shoot apical meristem [except in the Li (tunica) layer], epiblast, radicle, and their intervening tissues in descending strength of expression level with embryonic maturation.
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Labs working on this gene
- Nagoya University, BioScience Center, Chikusa, Nagoya 464-01, Japan; the Faculty of Agriculture, University of Tokyo, Tokyo 113, Japan;
- Agrobiological Resources, Tsukuba, Ibaraki 305, Japan;
- Department of Biology, Aichi University of Education, Kariya 448, Japan
References
- ↑ Sato Y, Hong SK, Tagiri A, Kitano H, Yamamoto N, Nagato Y, Matsuoka M. A rice homeobox gene, OSH1, is expressed before organ differentiation in a specific region during early embryogenesis. Proc Natl Acad Sci U S A. 1996 Jul 23;93(15):8117-22. PubMed PMID: 8755613; PubMed Central PMCID: PMC38885.
