Journal
NATURE GENETICS
Volume 48, Issue 7, Pages 785-+Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/ng.3567
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Funding
- DuPont Pioneer
- NSF Plant Genome Research program [IOS-1238202, MCB-1027445]
- Agriculture and Food Research Initiative of the USDA National Institute of Food and Agriculture [2016-67013-24572]
- Gatsby Charitable Foundation [GAT3395/PR4]
- Swedish Research Council [VR2013-4632]
- Next-Generation BioGreen 21 Program (SSAC) from Rural Development Administration, Republic of Korea [PJ01184302]
- NIFA [810732, 2016-67013-24572] Funding Source: Federal RePORTER
- Direct For Biological Sciences
- Div Of Molecular and Cellular Bioscience [1027445] Funding Source: National Science Foundation
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [1238202] Funding Source: National Science Foundation
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Shoot apical meristems are stem cell niches that balance proliferation with the incorporation of daughter cells into organ primordia. This balance is maintained by CLAVATA-WUSCHEL feedback signaling between the stem cells at the tip of the meristem and the underlying organizing center. Signals that provide feedback from organ primordia to control the stem cell niche in plants have also been hypothesized, but their identities are unknown. Here we report FASCIATED EAR3 (FEA3), a leucinerich- repeat receptor that functions in stem cell control and responds to a CLAVATA3/ESR-related (CLE) peptide expressed in organ primordia. We modeled our results to propose a regulatory system that transmits signals from differentiating cells in organ primordia back to the stem cell niche and that appears to function broadly in the plant kingdom. Furthermore, we demonstrate an application of this new signaling feedback, by showing that weak alleles of fea3 enhance hybrid maize yield traits.
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