Formation, Maintenance and Function of the Shoot Apical Meristem in Rice
Formation, Maintenance and Function of the Shoot Apical Meristem in Rice
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DOI：
10.1007/s11103-005-5579-3
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发表时间：
2006-04
影响因子：
5.1
通讯作者：
J. Itoh;Yutaka Sato;Y. Nagato;M. Matsuoka
中科院分区：
文献类型：
--
作者：
J. Itoh;Yutaka Sato;Y. Nagato;M. Matsuoka
在高等植物中，胚胎发生的过程建立了植物体平面（体轴）。根顶端分生组织（RAM）和茎顶端分生组织（SAM）是根据体轴所提供的位置信息在胚胎发生早期的固定位置上分化出来的。萌发后，SAM和RAM分别负责植物地上和地下部分的发育。由于SAM在植物发育中的重要作用，SAM在胚胎发生过程中的形成机制以及SAM在胚后发育中的维持和功能机制是植物发育生物学研究的重点。最近的进展，在分子和遗传学分析的形态发生突变在opsis揭示了SAM的形成，维持和功能所需的几个组件。尽管这些过程对每种植物的生命周期都是至关重要的，但这些组成部分的保存并不能解释植物形态的多样性。水稻被用作禾本科和单子叶植物的模式植物，因为研究基础设施的进步，特别是独特突变和基因组信息的收集。与双子叶植物拟南芥相比，水稻有许多独特的器官或发育过程。本文综述了水稻SAM的形成、维持和功能的研究进展。
In higher plants, the process of embryogenesis establishes the plant body plan (body axes). On the basis of positional information specified by the body axes, the shoot apical meristem (SAM) and root apical meristem (RAM) differentiate at fixed positions early in embryogenesis. After germination, SAM and RAM are responsible for the development of the above-ground and below-ground parts, respectively, of the plant. Because of the importance of SAM function in plant development, the mechanisms of SAM formation during embryogenesis and of SAM maintenance and function in post-embryonic development are priority questions in plant developmental biology. Recent advances in molecular and genetic analysis of morphogenetic mutations inArabidopsishave revealed several components required for SAM formation, maintenance and function. Although these processes are fundamental to the life cycle of every plant, conservation of the components does not explain the diversity of plant morphologies. Rice is used as a model plant of the grass family and of monocots because of the progress in research infrastructure, especially the collection of unique mutations and genome information. In comparison with the dicotArabidopsis, rice has many unique organs or processes of development. This review summarizes what is known of the processes of SAM formation, maintenance and function in rice.