Application of Lifeact reveals F-actin dynamics in Arabidopsis thaliana and the liverwort, Marchantia polymorpha.

Application of Lifeact reveals F-actin dynamics in Arabidopsis thaliana and the liverwort, Marchantia polymorpha.
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Lifeact 的应用揭示了拟南芥和地钱地钱中的 F-肌动蛋白动态。

DOI:
10.1093/pcp/pcp055
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发表时间:
2009-06
影响因子:
4.9
通讯作者:
Ueda, Takashi
Ueda, Takashi
中科院分区:
生物学2区
文献类型:
--
作者:
Era, Atsuko;Tominaga, Motoki;Ebine, Kazuo;Awai, Chie;Saito, Chieko;Ishizaki, Kimitsune;Yamato, Katsuyuki T.;Kohchi, Takayuki;Nakano, Akihiko;Ueda, Takashi

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肌动蛋白在广泛的植物功能中发挥着重要作用,包括细胞分裂、细胞质流动、细胞形态发生和细胞器运动。对活细胞中的肌动蛋白细胞骨架进行成像是研究这些重要现象的有效方法。一些有用的探针已被开发用于丝状肌动蛋白(F-肌动蛋白)的实时成像,但仍需要新的多功能探针。在这里,我们报告了一种名为Lifeact的新探针的应用,用于显示植物细胞中的F-肌动蛋白。Lifeact是一种由17个氨基酸组成的短肽,来源于酵母Abp140p。我们使用Lifeact-Venus融合蛋白对拟南芥中的F-肌动蛋白进行染色,并能够观察到根毛细胞中肌动蛋白网络的动态重排。我们还使用Lifeact-Venus可视化了多形地钱中的肌动蛋白细胞骨架;这揭示了地钱细胞中独特的、动态的F-肌动蛋白运动。我们的结果表明,Lifeact可以作为一种有用的工具来研究广泛植物谱系中的肌动蛋白细胞骨架。
Actin plays fundamental roles in a wide array of plant functions, including cell division, cytoplasmic streaming, cell morphogenesis and organelle motility. Imaging the actin cytoskeleton in living cells is a powerful methodology for studying these important phenomena. Several useful probes for live imaging of filamentous actin (F-actin) have been developed, but new versatile probes are still needed. Here, we report the application of a new probe called Lifeact for visualizing F-actin in plant cells. Lifeact is a short peptide comprising 17 amino acids that was derived from yeast Abp140p. We used a Lifeact–Venus fusion protein for staining F-actin in Arabidopsis thaliana and were able to observe dynamic rearrangements of the actin meshwork in root hair cells. We also used Lifeact–Venus to visualize the actin cytoskeleton in the liverwort Marchantia polymorpha; this revealed unique and dynamic F-actin motility in liverwort cells. Our results suggest that Lifeact could be a useful tool for studying the actin cytoskeleton in a wide range of plant lineages.
肌动蛋白微丝变化对植物细胞力学中细胞板发育的贡献的定量分析。
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