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Mol. Cells 2009; 27(6): 615-620

Published online June 30, 2009

https://doi.org/10.1007/s10059-009-0094-z

© The Korean Society for Molecular and Cellular Biology

Interdomain Signaling in Stem Cell Maintenance of Plant Shoot Meristems

Andrea Bleckmann, and Ruediger Simon

Received: May 26, 2009; Accepted: May 29, 2009

Abstract

The plant shoot meristem maintains a group of stem cells that remain active throughout the plant life. They continuously generate new cells that are then recruited for organ initiation in the peripheral zone. Stem cell proliferation and daughter cell differentiation has to be integrated with overall growth and development of the diverse functional domains within the shoot apex. Several studies have revealed extensive communication between these domains. The signaling mechanisms employed comprise diffusible peptides, directional trans-port of plant hormones, but also complex interactions between transcription factors, that together establish a panoply of regulatory inputs that fine-tune stem cell behavior in the shoot meristem.

Keywords meristem, plant development, signaling, stem cell

Article

Minireview

Mol. Cells 2009; 27(6): 615-620

Published online June 30, 2009 https://doi.org/10.1007/s10059-009-0094-z

Copyright © The Korean Society for Molecular and Cellular Biology.

Interdomain Signaling in Stem Cell Maintenance of Plant Shoot Meristems

Andrea Bleckmann, and Ruediger Simon

Received: May 26, 2009; Accepted: May 29, 2009

Abstract

The plant shoot meristem maintains a group of stem cells that remain active throughout the plant life. They continuously generate new cells that are then recruited for organ initiation in the peripheral zone. Stem cell proliferation and daughter cell differentiation has to be integrated with overall growth and development of the diverse functional domains within the shoot apex. Several studies have revealed extensive communication between these domains. The signaling mechanisms employed comprise diffusible peptides, directional trans-port of plant hormones, but also complex interactions between transcription factors, that together establish a panoply of regulatory inputs that fine-tune stem cell behavior in the shoot meristem.

Keywords: meristem, plant development, signaling, stem cell

Mol. Cells
Sep 30, 2022 Vol.45 No.9, pp. 603~672
COVER PICTURE
The Target of Rapamycin Complex (TORC) is a central regulatory hub in eukaryotes, which is well conserved in diverse plant species, including tomato (Solanum lycopersicum). Inhibition of TORC genes (SlTOR, SlLST8, and SlRAPTOR) by VIGS (virus-induced gene silencing) results in early fruit ripening in tomato. The red/ orange tomatoes are early-ripened TORC-silenced fruits, while the green tomato is a control fruit. Top, left, control fruit (TRV2-myc); top, right, TRV2-SlLST8; bottom, left, TRV2-SlTOR; bottom, right, TRV2-SlRAPTOR(Choi et al., pp. 660-672).

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