Biology Department, University of Pennsylvania, 433 S. University Ave, Philadelphia, PA, 19104, USA.
Biology Department, University of Pennsylvania, 433 S. University Ave, Philadelphia, PA, 19104, USA.
Curr Opin Plant Biol. 2020 Dec;58:17-24. doi: 10.1016/j.pbi.2020.08.008. Epub 2020 Oct 22.
All the above-ground organs of a plant are derived from stem cells that reside in shoot apical meristems (SAM). Over the past 25 years, the genetic pathways that control the proliferation of stem cells within the SAM, and the differentiation of their progenitors into lateral organs, have been described in great detail. However, longstanding questions regarding the importance of communication between cells within the SAM and lateral organs have, until recently, remained unanswered. In this review, we describe recent investigations into the extent, nature and significance of signaling both to and from the SAM.
植物地上部分的所有器官都来源于位于茎尖分生组织(SAM)中的干细胞。在过去的 25 年中,控制 SAM 内干细胞增殖及其祖细胞分化为侧生器官的遗传途径已被详细描述。然而,直到最近,关于 SAM 内细胞与侧生器官之间的通信重要性的长期存在的问题仍然没有得到解答。在这篇综述中,我们描述了最近对 SAM 内外信号传递的程度、性质和意义的研究。