Chiba Kaito, Tezuka Takumi, Wabiko Hiroetsu, Nagato Yasuo, Nagasawa Nobuhiro, Satoh-Nagasawa Namiko
Department of Biological Production, Faculty of Bioresource Sciences, Akita Prefectural University.
National Institute of Genetics.
Plant Biotechnol (Tokyo). 2024 Jun 25;41(2):121-127. doi: 10.5511/plantbiotechnology.24.0305a.
Cell division is important for organisms to grow and repair damaged tissues. A mutant screen in rice has identified dwarf () mutants that code for a novel protein potentially involved in mitosis including cytokinesis in rice. The gene is expressed during the mitotic phase and a defect in the gene induces cells with two nuclei. Analysis of mutants suggests that the 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, 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 mutants.
细胞分裂对于生物体生长和修复受损组织至关重要。在水稻中进行的突变体筛选鉴定出了矮化（）突变体，这些突变体编码一种可能参与水稻有丝分裂（包括胞质分裂）的新型蛋白质。基因在有丝分裂期表达，基因缺陷会诱导产生具有两个细胞核的细胞。对突变体的分析表明，基因在起始后的一段时间内促进水稻叶原基中的细胞分裂，并维持适当的细胞形态，尤其是在非分生组织中。此外，突变体表现出从幼年期到成年期的转变延迟。未来的研究将阐明有丝分裂缺陷与突变体中观察到的其他特征之间的关系。
