How boundaries control plant development.
How boundaries control plant development.
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DOI：
10.1016/j.pbi.2013.11.013
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发表时间：
2014-02
影响因子：
9.5
通讯作者：
P. Zadnikova;R. Simon
中科院分区：
文献类型：
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作者：
P. Zadnikova;R. Simon
由SAM生长差异引起的机械应力影响分生组织模式。油菜素内酯的消耗与分生组织到器官边界的形成有关。几种转录因子调控边界功能。分生组织活动丧失后，分离带的边界可以区分。茎尖分生组织（SAM）的持续生长和器官发育需要干细胞增殖的精确协调、干细胞后代分化途径的多样化以及分生组织到器官的形态边界的建立。这些复杂的生物过程需要广泛整合细胞间信号传导和基因调控网络的几个组成部分，它们的协调作用对细胞分裂和生长有影响。本文综述了高等植物SAM器官发生相关基因网络的最新研究进展。我们关注最近的进展，以显示转录调节因子，激素串扰和物理应激之间的相互作用如何调节分生组织到器官边界的建立和维持。茎尖分生组织（SAM）的持续生长和器官发育需要干细胞增殖的精确协调、干细胞后代分化途径的多样化以及分生组织到器官的形态边界的建立。这些复杂的生物过程需要广泛整合细胞间信号传导和基因调控网络的几个组成部分，它们的协调作用对细胞分裂和生长有影响。本文综述了高等植物SAM器官发生相关基因网络的最新研究进展。我们关注最近的进展，以显示转录调节因子，激素串扰和物理应激之间的相互作用如何调节分生组织到器官边界的建立和维持。
HighlightsMechanical stress caused by differential growth in SAM influences meristem patterning.Depletion of brassinosteroids correlates with meristem-to-organ boundary formation.Several transcription factors transcriptionally regulate boundary functions.After meristematic activity is lost, boundaries can differentiate in abscission zones.Continuous growth and organ development from the shoot apical meristem (SAM) requires a precise coordination of stem cell proliferation, commitment of stem cell descendants to diverse differentiation pathways and establishment of morphological meristem-to-organ boundaries. These complex biological processes require extensive integration of several components of cell-to-cell signaling and gene regulatory networks whose coordinated actions have an impact on cell division and growth.Here we review the current knowledge of gene networks involved in organogenesis from the SAM in higher plants. We focus on recent advances to show how the interaction between transcriptional regulators, hormonal crosstalk and physical stress regulates the establishment and maintenance of meristem-to-organ boundaries.Continuous growth and organ development from the shoot apical meristem (SAM) requires a precise coordination of stem cell proliferation, commitment of stem cell descendants to diverse differentiation pathways and establishment of morphological meristem-to-organ boundaries. These complex biological processes require extensive integration of several components of cell-to-cell signaling and gene regulatory networks whose coordinated actions have an impact on cell division and growth.Here we review the current knowledge of gene networks involved in organogenesis from the SAM in higher plants. We focus on recent advances to show how the interaction between transcriptional regulators, hormonal crosstalk and physical stress regulates the establishment and maintenance of meristem-to-organ boundaries.