Rodriguez Ramiro E, Debernardi Juan M, Palatnik Javier F
IBR (Instituto de Biología Molecular y Celular de Rosario) - CONICET/UNR, Rosario, Argentina.
Wiley Interdiscip Rev Dev Biol. 2014 Jan-Feb;3(1):41-57. doi: 10.1002/wdev.115. Epub 2013 Apr 18.
Plants produce new organs throughout their life span. Leaves first initiate as rod-like structures protruding from the shoot apical meristem, while they need to pass through different developmental stages to become the flat organ specialized in photosynthesis. Leaf morphogenesis is an active process regulated by many genes and pathways that can generate organs with a wide variety of sizes and shapes. Important differences in leaf architecture can be seen among different species, but also in single individuals. A key aspect of leaf morphogenesis is the precise control of cell proliferation. Modification or manipulation of this process may lead to leaves with different sizes and shapes, and changes in the organ margins and curvature. Many genes required for leaf development have been identified in Arabidopsis thaliana, and the mechanisms underlying leaf morphogenesis are starting to be unraveled at the molecular level.
植物在其整个生命周期中都会产生新器官。叶片最初以从茎尖分生组织突出的棒状结构开始形成，而它们需要经过不同的发育阶段才能成为专门用于光合作用的扁平器官。叶片形态发生是一个由许多基因和信号通路调控的活跃过程，这些基因和信号通路能够产生各种大小和形状的器官。不同物种之间以及单个个体中都能观察到叶片结构的重要差异。叶片形态发生的一个关键方面是细胞增殖的精确控制。对这一过程的修饰或操控可能会导致叶片具有不同的大小和形状，以及器官边缘和曲率的变化。在拟南芥中已经鉴定出许多叶片发育所需的基因，叶片形态发生的分子机制也开始逐渐明晰。
