NDLI: Signaling network for stem cell maintenance and functioning inarabidopsis shoot apical meristem

Content Provider	Springer Nature Link
Author	Kim, Cha Young Liu, Lin Kim, Jae Yean
Copyright Year	2007
Abstract	The shoot apical meristem (SAM) domain, which contains a self-renewing population of undifferentiated pluripotent cells, produces all of a plant’s post-embryonic aerial organs. Intra- and intercellular signaling networks are essential to the maintenance of SAM size and structure, and for coordinating the formation and patterning of new organs. A key regulatory system for meristem functioning consists of a non-cell-autonomous WUSCHEL (WUS)-CLAVATA (CLV) regulatory loop and class I KNOX-related signaling in the shoot apex. Meristem activity is also dependent on short- and long-distance signaling from the organizing center, organ boundaries/primordia, and distant organs. Here, we provide an overview of SAM organization and present our current knowledge about the signaling network for stem cell maintenance and functioning in the vegetative SAM in Arabidopsis. Transcription factors belonging to the WOX, KNOX, HD-ZIP, MYB, SAND, AP2, and NAC domain protein families, as well as microRNA, play central roles in this network, along with hormonal cross-talk. We also discuss regulation at different levels, such as for protein interactions, and transcriptional and epigenetic controls. Our intent is to show how various signals are integrated to maintain a stem cell niche in the SAM.
Starting Page	274
Ending Page	281
Page Count	8
File Format	PDF
ISSN	12269239
Journal	Journal of Plant Biology
Volume Number	50
Issue Number	3
e-ISSN	18670725
Language	English
Publisher	Springer-Verlag
Publisher Date	2007-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Clavata epigenetic regulation plasmodesmata shoot meristem signaling SHOOT Meristemless Wuschel Plant Sciences Plant Breeding/Biotechnology Plant Genetics & Genomics Plant Systematics/Taxonomy/Biogeography Plant Ecology
Content Type	Text
Resource Type	Article
Subject	Plant Science

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