Key message

Overview of the current understanding of the molecular mechanisms that regulate meristem activity in the CMM compared to the SAM.

Abstract

Meristems are undifferentiated cells responsible for post-embryonic plant development. The meristems are able to form new organs continuously by carefully balancing between stem cell proliferation and cell differentiation. The plant stem cell niche in each meristem harbors the stem cells that are important to maintain each meristem. The shoot apical meristem (SAM) produces all above-parts of a plant and the molecular mechanisms active in the SAM are actively studied since many years, and models are available. During the reproductive phase of the plant, the inflorescence meristem gives rise to floral meristems, which give rise to the flowers. During floral development, the gynoecium forms that contains a new meristem inside, called the carpel margin meristem (CMM). In Arabidopsis, the gynoecium consists out of two fused carpels, where the CMM forms along the fused carpel margins. In this review, we focus on the molecular mechanisms taking place in the CMM, and we discuss similarities and differences found in the SAM.

中文翻译：

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控制拟南芥腕缘分生组织（CMM）中的干细胞活性。

关键信息

与SAM相比，目前对CMM中调节分生组织活性的分子机制的了解概述。

抽象

分生组织是负责胚胎后植物发育的未分化细胞。通过仔细地平衡干细胞增殖和细胞分化之间，分生组织能够连续形成新器官。每个分生组织中的植物干细胞生态位都具有对维持每个分生组织很重要的干细胞。茎尖分生组织（SAM）产生植物的所有以上部分，并且多年来对SAM中活跃的分子机制进行了积极的研究，并且可以使用模型。在植物的生殖阶段，花序分生组织产生花分生组织，花分生组织产生花。在花的发育过程中，雌蕊的形式内部含有一种新的分生组织，称为心皮分生组织（CMM）。在拟南芥中，妇科由两个融合的心皮组成，CMM沿融合的心皮边缘形成。在这篇综述中，我们关注于CMM中发生的分子机制，并讨论了SAM中的异同。