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Control of stem cell activity in the carpel margin meristem (CMM) in Arabidopsis

Authors
  • Reyes-Olalde, J. Irepan
  • de Folter, Stefan
Type
Published Article
Journal
Plant Reproduction
Publisher
Springer Berlin Heidelberg
Publication Date
Jan 22, 2019
Volume
32
Issue
2
Pages
123–136
Identifiers
DOI: 10.1007/s00497-018-00359-0
Source
Springer Nature
Keywords
License
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Abstract

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

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