Os02g0762400
The rice Os02g0762400 was reported as KRP1 in 2006 [1] by researchers from Belgium.
Contents
Annotated Information
Gene Symbol
- Os02g0762400 <=> KRP1,OsiICK1, Orysa;KRP1, OrysaICK1, Orysa;ICK1, CDKI
Function
- Kip-related proteins (KRPs) play a major role in the regulation of the plant cell cycle.
- KRP1 plays an important role in the exit from the mitotic cell cycle during rice grain
formation.
Phenotypic analysis
- Phenotypic analysis revealed that overexpressed KRP1 reduced cell production during leaf development.
- The reduced cell production in the leaf meristem was partly compensated by an increased cell size, demonstrating the existence of a compensatory mechanism in monocot species by which growth rate is less reduced than cell production, through cell expansion.
- Furthermore, KRP1 overexpression dramatically reduced seed filling. Sectioning through the overex-pressed KRP1 seeds showed that KRP overproduction disturbed the production of endosperm cells. The decrease in the number of fully formed seeds was accompanied by a drop in the endoreduplication of endosperm cells, pointing toward a role of KRP1 in connecting endocycle with endosperm development.
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Labs working on this gene
- Department of Plant Systems Biology, Flanders Interuniversity Institute for Biotechnology, Ghent University,B–9052 Ghent, Belgium (R.M.B., L.D.V., L.S.L.N., V.M., G.T.S.B., D.I.); and CropDesign NV, B–9052 Ghent, Belgium (A.P., A.-M.D., J.D.W., R.P., W.F.B., V.F.)
References
- ↑ Barrôco RM, Peres A, Droual AM, De Veylder L, Nguyen le SL, De Wolf J, Mironov V, Peerbolte R, Beemster GT, Inzé D, Broekaert WF, Frankard V. The cyclin-dependent kinase inhibitor Orysa;KRP1 plays an important role in seed development of rice. Plant Physiol. 2006 Nov;142(3):1053-64. PubMed PMID: 17012406; PubMed Central PMCID: PMC1630760.
