德诺沃TANGLED1招募到玉米中异常的细胞板融合站点
Aimee N Uyehara1, Beatrice N Diep1,2, Lindy A Allsman1
1Department of Botany and Plant Sciences, Center for Plant Cell Biology, University of California, Riverside, CA, USA 92521.
bioRxiv : the preprint server for biology
|March 18, 2024
概括
植物细胞分裂平面的定位由前带 (PPB) 指导. 然而,TANGLED1 (TAN1) 蛋白质的招募是独立于PPB的,涉及fragmoplast和actin纤维.
科学领域:
- 植物细胞生物学 植物细胞生物学
- 细胞动力学 细胞动力学
- 分子植物科学 分子植物科学
背景情况:
- 准确的划分平面定位对于植物的生长和发育至关重要.
- 前带 (PPB) 是一种短暂的细胞骨架结构,标志着植物细胞的分裂部位.
- 传统上认为PPB对于招募分裂部位蛋白质至关重要.
研究的目的:
- 为了研究分裂部位蛋白TANGLED1 (TAN1) 的招募机制.
- 为了确定TAN1的招募是否取决于前带 (PPB).
- 阐明质细胞和细胞骨元素在TAN1局部化中的作用.
主要方法:
- 在植物细胞中定位TANGLED1 (TAN1) 的活细胞成像.
- 调查TAN1招募动态与前前相带 (PPB) 和质细胞相关.
- 分析了动氨酸丝破坏和肌酸XI运动蛋白突变 (OPAQUE1) 对TAN1局部化的影响.
主要成果:
- TANGLED1 (TAN1) 被独立于前酶带 (PPB) 招募到细胞皮层.
- TAN1的招募是由植物细胞的细胞动力机械,质细胞介导的.
- 皮质新部位的TAN1定位部分依赖于完整的活性丝和肌酸XI电机OPAQUE1 (O1).
结论:
- 前酶带 (PPB) 不必用于招募所有分裂部位蛋白质,例如TANGLED1 (TAN1).
- 质体在招募TAN1到分裂部位方面发挥着直接作用.
- 这些发现表明,TAN1和潜在的其他分裂部位蛋白在植物细胞运动的后期阶段起着新的作用.
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