Myosins XI-K, XI-1, and XI-2 are required for development of pavement cells, trichomes, and stigmatic papillae in Arabidopsis.
Myosins XI-K, XI-1, and XI-2 are required for development of pavement cells, trichomes, and stigmatic papillae in Arabidopsis.
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DOI：
10.1186/1471-2229-12-81
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发表时间：
2012-06-06
影响因子：
5.3
通讯作者：
Paves H
中科院分区：
文献类型：
--
作者：
Ojangu EL;Tanner K;Pata P;Järve K;Holweg CL;Truve E;Paves H
囊泡和细胞器的定位和动力学以及因此植物细胞的生长由肌动蛋白-肌球蛋白系统介导。在拟南芥中，有13种XI类肌球蛋白介导不同细胞类型中的囊泡和细胞器运输。到目前为止，已经显示了五种XI类肌球蛋白参与芽和根发育期间的细胞扩增，其中三种XI-1，XI-2和XI-K是细胞器运输所必需的。同时耗尽拟南芥XI类肌球蛋白XI-K，XI-1，和XI-2的双和三突变体植物影响几种类型的表皮细胞的生长。双突变体和三突变体植株的毛状体的大小和形状、叶面细胞以及柱头乳突的伸长都受到不同程度的影响。细胞大小的减少导致显着的大小减少的地上部器官的情况下，三突变体，影响螺栓形成，开花时间和生育力。表型分析表明，三突变体育性降低是由于雌蕊发育延迟或发育不足所致。我们的结论是XI类肌球蛋白XI-K，XI-1和XI-2有部分冗余的作用，在地上部表皮的生长。肌球蛋白XI-K在决定表皮细胞的大小和形状方面起更重要的作用，而肌球蛋白XI-1和XI-2起次要作用，因为这两种肌球蛋白的缺失由XI-K补偿。肌球蛋白XI-K和XI-2之间的合作似乎在这些过程中发挥了重要作用。
The positioning and dynamics of vesicles and organelles, and thus the growth of plant cells, is mediated by the acto-myosin system. In Arabidopsis there are 13 class XI myosins which mediate vesicle and organelle transport in different cell types. So far the involvement of five class XI myosins in cell expansion during the shoot and root development has been shown, three of which, XI-1, XI-2, and XI-K, are essential for organelle transport. Simultaneous depletion of Arabidopsis class XI myosins XI-K, XI-1, and XI-2 in double and triple mutant plants affected the growth of several types of epidermal cells. The size and shape of trichomes, leaf pavement cells and the elongation of the stigmatic papillae of double and triple mutant plants were affected to different extent. Reduced cell size led to significant size reduction of shoot organs in the case of triple mutant, affecting bolt formation, flowering time and fertility. Phenotype analysis revealed that the reduced fertility of triple mutant plants was caused by delayed or insufficient development of pistils. We conclude that the class XI myosins XI-K, XI-1 and XI-2 have partially redundant roles in the growth of shoot epidermis. Myosin XI-K plays more important role whereas myosins XI-1 and XI-2 have minor roles in the determination of size and shape of epidermal cells, because the absence of these two myosins is compensated by XI-K. Co-operation between myosins XI-K and XI-2 appears to play an important role in these processes.
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影响因子：
64.5
作者：
HULSKAMP, M;MISERA, S;JURGENS, G
通讯作者：
JURGENS, G
影响因子：
56.9
作者：
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通讯作者：
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影响因子：
7.4
作者：
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通讯作者：
Lord, EM
影响因子：
7.4
作者：
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通讯作者：
Nick, Peter
影响因子：
7.4
作者：
Lee, YRJ;Liu, B
通讯作者：
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