Institut de Recherche pour le Développement (IRD), UMR DIADE (IRD/UM2), 911 Avenue Agropolis, 34394 Montpellier cedex 5, France.
Trends Plant Sci. 2013 Aug;18(8):450-8. doi: 10.1016/j.tplants.2013.04.006. Epub 2013 May 20.
The developmental plasticity of the root system represents a key adaptive trait enabling plants to cope with abiotic stresses such as drought and is therefore important in the current context of global changes. Root branching through lateral root formation is an important component of the adaptability of the root system to its environment. Our understanding of the mechanisms controlling lateral root development has progressed tremendously in recent years through research in the model plant Arabidopsis thaliana (Arabidopsis). These studies have revealed that the phytohormone auxin acts as a common integrator to many endogenous and environmental signals regulating lateral root formation. Here, we review what has been learnt about the myriad roles of auxin during lateral root formation in Arabidopsis.
根系的发育可塑性代表了一种关键的适应特性，使植物能够应对干旱等非生物胁迫，因此在当前全球变化的背景下具有重要意义。通过侧根形成实现的根系分枝是根系适应其环境的重要组成部分。近年来，通过对模式植物拟南芥（Arabidopsis）的研究，我们对控制侧根发育的机制有了极大的了解。这些研究表明，植物激素生长素作为一种共同的整合因子，作用于许多调节侧根形成的内源性和环境信号。在这里，我们回顾了生长素在拟南芥侧根形成过程中的众多作用。
