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Microtubule Reorganization as a Response to Implementation of NO Signals in Plant Cells

机译：微管重组作为对植物细胞中NO信号执行的响应

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摘要

The effects of an exogeneous NO donor, sodium nitroprusside, on the orientation and organization of cortical microtubules in Arabidopsis thaliana root cells expressing GFP-MAP4 were studied in vivo. It was found that sodium nitroprusside treatment (10-500 μM, 24 h) caused the acceleration of primary root growth and enhanced initiation of root hairs in the differentiation zone. The influence of sodium nitroprusside revealed in changes in the orientation and organization of cortical microtubules in different types of cells of A. thaliana root. The most sensitive to sodium nitroprusside exposure were microtubules in epidermal cells of the elongation zone, where native transverse orientation of cortical microtubules turned into random, oblique, or longitudinal relative to the primary root axis. We suggest that NO, as one of the intracellular secondary messengers, triggers cell differentiation by reorientation of cortical microtubules, possibly via tubulin nitrotyrosination.
机译：在体内研究了外源NO供体硝普钠对表达GFP-MAP4的拟南芥根细胞中皮质微管的定向和组织的影响。发现硝普钠处理（10-500μM，24 h）可促进初生根的生长并促进分化区根毛的萌发。硝普钠的影响揭示了拟南芥根不同类型细胞中皮层微管的方向和组织的变化。对硝普钠暴露最敏感的是伸长区表皮细胞中的微管，其中皮层微管的自然横向方向相对于主根轴变为随机，倾斜或纵向。我们建议，作为细胞内二级信使之一，NO可能通过微管蛋白硝基酪氨酸化来重新定向皮质微管，从而触发细胞分化。

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  • 来源
    《Cytology and genetics》 |2009年第2期|73-79|共7页
  • 作者

    A.I. Yemets; Yu. A. Krasylenko; Yu. A. Sheremet; Ya. B. Blume;

  • 作者单位

    Institute of Food Biotechnology and Genomics National Academy of Sciences of Ukraine, Kyiv, Ukraine;

    Institute of Food Biotechnology and Genomics National Academy of Sciences of Ukraine, Kyiv, Ukraine;

    Institute of Food Biotechnology and Genomics National Academy of Sciences of Ukraine, Kyiv, Ukraine;

    Institute of Food Biotechnology and Genomics National Academy of Sciences of Ukraine, Kyiv, Ukraine;

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