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Rice KORPOKKUR gene is expressed in mitotic cells and regulates pleiotropic features during vegetative phase
Kaito Chiba1, Takumi Tezuka1,2, Hiroetsu Wabiko1
1Department of Biological Production, Faculty of Bioresource Sciences, Akita Prefectural University.
Abstract:
Cell division is important for organisms to grow and repair damaged tissues. A mutant screen in rice has identified dwarf korpokkur (kor) mutants that code for a novel protein potentially involved in mitosis including cytokinesis in rice. The KOR gene is expressed during the mitotic phase and a defect in the KOR gene induces cells with two nuclei. Analysis of kor mutants suggests that the KOR gene promotes cell division in the rice leaf primordia for a period after initiation, and maintains proper cell morphology especially in non-meristematic tissues. Additionally, kor mutants showed a delayed transition from juvenile phase to adult phase. Future research will shed light on the relationship between the mitotic defect and other features observed in the kor mutants.
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