The plant microtubule-associated protein AtMAP65-3/PLE is essential for cytokinetic phragmoplast function.

The plant microtubule-associated protein AtMAP65-3/PLE is essential for cytokinetic phragmoplast function.
复制标题

DOI:
10.1016/j.cub.2004.02.032
复制
发表时间:
2004-03-09
期刊:
影响因子:
9.2
通讯作者:
Hauser, MT
Hauser, MT
中科院分区:
生物学1区
文献类型:
--
作者:
Müller, S;Smertenko, A;Wagner, V;Heinrich, M;Hussey, PJ;Hauser, MT

文献摘要

参考文献

被引文献

相似文献

间期和细胞核的定向细胞扩张以及 M 期的细胞分裂是由四种微管阵列介导的,其中三种微管阵列是植物特有的:间期阵列、前期带和成膜体。植物微管相关蛋白 MAP65 已被确定为这些阵列中的关键结构成分。拟南芥基因组有九个 MAP65 基因,在这里我们展示了其中一个 AtMAP65-3/PLE,仅定位于有丝分裂阵列,并且对于胞质分裂至关重要。拟南芥 pleiade (ple) 等位基因是单一隐性突变,我们发现这些突变位于 AtMAP65-3 基因中。此外,这些突变会导致 C 末端截断,从而消除微管结合。在ple突变体中,后期纺锤体是正常的,并且细胞因子成膜体可以形成但被扭曲;它不仅更宽,而且中线(方向相反的微管重叠的区域)也异常扩大。在这里,我们提供的数据证明了 AtMAP65-3/PLE 在植物细胞胞质分裂中的重要作用。
Directional cell expansion in interphase and nuclear and cell division in M-phase are mediated by four microtubule arrays, three of which are unique to plants: the interphase array, the preprophase band, and the phragmoplast. The plant microtubule-associated protein MAP65 has been identified as a key structural component in these arrays. The Arabidopsis genome has nine MAP65 genes, and here we show that one, AtMAP65-3/PLE, locates only to the mitotic arrays and is essential for cytokinesis. The Arabidopsis pleiade (ple) alleles are single recessive mutations, and we show that these mutations are in the AtMAP65-3 gene. Moreover, these mutations cause C-terminal truncations that abolish microtubule binding. In the ple mutants the anaphase spindle is normal, and the cytokinetic phragmoplast can form but is distorted; not only is it wider, but the midline, the region where oppositely oriented microtubules overlap, is unusually expanded. Here we present data that demonstrate an essential role for AtMAP65-3/PLE in cytokinesis in plant cells.
DOI: 10.1038/ncb844
发表时间: 2002-09
影响因子: 21.3
作者:
通讯作者: --
DOI: 10.1104/pp.004416
发表时间: 2002-09-01
期刊: PLANT PHYSIOLOGY
影响因子: 7.4
作者:
Müller, S;Fuchs, E;Hauser, MT
通讯作者: Hauser, MT
DOI: 10.1016/s0960-9822(01)00655-8
发表时间: 2002-01-22
期刊: CURRENT BIOLOGY
影响因子: 9.2
作者:
Strompen, G;El Kasmi, F;Mayer, U
通讯作者: Mayer, U
DOI: 10.1046/j.1365-313x.1998.00343.x
发表时间: 1998-12-01
期刊: PLANT JOURNAL
影响因子: 7.2
作者:
Clough, SJ;Bent, AF
通讯作者: Bent, AF
DOI: 10.1073/pnas.96.26.14931
发表时间: 1999-12-21
影响因子: 11.1
作者:
Chan, J;Jensen, CG;Lloyd, CW
通讯作者: Lloyd, CW