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首页> 外文期刊>Protoplasma: An International Journal of Cell Biology >Nanoscale and geometric influences on the microtubule cytoskeleton in plants: Thinking inside and outside the box
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Nanoscale and geometric influences on the microtubule cytoskeleton in plants: Thinking inside and outside the box

机译：纳米尺度和几何形状对植物微管细胞骨架的影响：盒子内外的思考

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摘要

The dynamic microtubule (MT) cytoskeleton found in the cell cortex of plants drives cell expansion via cell wall modifications. In the last decade, live cell imaging studies employing green fluorescent protein have helped unravel the mechanisms behind how cells arrange cortical MTs into complex arrays and shape cell expansion. In this review, we explore the reverse scenario: how cell geometry and organelles influence and constrain the organization and behavior of cortical MTs. This newly emerging principle explains how cells perceive local nanoscale structural input from MT-organizing centers, such as the nucleus, endomembranes, and cell edges, and translate this into global cell-wide order via MT self-organization. Studies primarily using the model plant Arabidopsis thaliana and tobacco BY-2 suspension cultures have broadened our understanding of how cells form not only elegant parallel arrays but also more complex MT configurations, including the prominent MT bundles found in preprophase bands, leaf epidermal cells, and developing xylem.
机译：在植物细胞皮层中发现的动态微管（MT）细胞骨架通过细胞壁修饰来驱动细胞扩增。在过去的十年中，采用绿色荧光蛋白的活细胞成像研究帮助揭示了细胞如何将皮质MT排列成复杂阵列并塑造细胞膨胀的机制。在这篇综述中，我们探讨了相反的情况：细胞的几何形状和细胞器如何影响和约束皮质MT的组织和行为。这一新出现的原理解释了细胞如何从MT组织中心（如细胞核，内膜和细胞边缘）感知局部纳米级结构输入，并通过MT自组织将其转化为整个细胞范围内的顺序。主要使用模型植物拟南芥和烟草BY-2悬浮培养物进行的研究拓宽了我们对细胞如何不仅形成优雅的平行阵列而且还形成更复杂的MT构型的理解，包括在前期条带，叶片表皮细胞和发展中的木质部。

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