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Advancing knowledge of the plant nuclear periphery and its application for crop science
Nucleus ( IF 3.7 ) Pub Date : 2020-12-09
David E. Evans, Sarah Mermet, Christophe Tatout

ABSTRACT

In this review, we explore recent advances in knowledge of the structure and dynamics of the plant nuclear envelope. As a paradigm, we focused our attention on the Linker of Nucleoskeleton and Cytoskeleton (LINC) complex, a structurally conserved bridging complex comprising SUN domain proteins in the inner nuclear membrane and KASH domain proteins in the outer nuclear membrane. Studies have revealed that this bridging complex has multiple functions with structural roles in positioning the nucleus within the cell, conveying signals across the membrane and organizing chromatin in the 3D nuclear space with impact on gene transcription. We also provide an up-to-date survey in nuclear dynamics research achieved so far in the model plant Arabidopsis thaliana that highlights its potential impact on several key plant functions such as growth, seed maturation and germination, reproduction and response to biotic and abiotic stress. Finally, we bring evidences that most of the constituents of the LINC Complex and associated components are, with some specificities, conserved in monocot and dicot crop species and are displaying very similar functions to those described for Arabidopsis. This leads us to suggest that a better knowledge of this system and a better account of its potential applications will in the future enhance the resilience and productivity of crop plants.



中文翻译:

深入了解植物核外围及其在作物科学中的应用

摘要

在这篇综述中,我们探索了植物核包膜的结构和动力学知识的最新进展。作为范例,我们将注意力集中在核骨架和细胞骨架连接子(LINC)复合物上,这是一种结构保守的桥接复合物,包含内核膜中的SUN结构域蛋白和外核膜中的KASH结构域蛋白。研究表明,这种桥接复合物具有多种功能,具有以下结构性作用:将细胞核定位在细胞内,跨膜传递信号以及在3D核空间中组织染色质,从而影响基因转录。我们还提供了迄今为止在模型植物拟南芥中实现的核动力学研究的最新调查。强调了它对几种关键植物功能的潜在影响,例如生长,种子成熟和发芽,繁殖以及对生物和非生物胁迫的响应。最后,我们提供了证据,证明LINC复合物的大部分成分和相关成分在单子叶植物和双子叶植物物种中具有一定的特异性,并且具有与拟南芥所描述的功能非常相似的功能。这使我们建议,对这个系统的更好的了解和对其潜在应用的更好的了解将在将来增强农作物的适应力和生产力。

更新日期:2020-12-09
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