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A gene expression map of shoot domains reveals regulatory mechanisms

Abstract : Gene regulatory networks control development via domain-specific gene expression. In seed plants, self-renewing stem cells located in the shoot apical meristem (SAM) produce leaves from the SAM peripheral zone. After initiation, leaves develop polarity patterns to form a planar shape. Here we compare translating RNAs among SAM and leaf domains. Using translating ribosome affinity purification and RNA sequencing to quantify gene expression in target domains, we generate a domain-specific translatome map covering representative vegetative stage SAM and leaf domains. We discuss the predicted cellular functions of these domains and provide evidence that dome seemingly unrelated domains, utilize common regulatory modules. Experimental follow up shows that the RABBIT EARS and HANABA TARANU transcription factors have roles in axillary meristem initiation. This dataset provides a community resource for further study of shoot development and response to internal and environmental signals.
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Submitted on : Tuesday, April 14, 2020 - 11:53:58 AM
Last modification on : Saturday, June 26, 2021 - 3:39:53 AM

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Caihuan Tian, Ying Wang, Haopeng Yu, Jun He, Jin Wang, et al.. A gene expression map of shoot domains reveals regulatory mechanisms. Nature Communications, Nature Publishing Group, 2019, 10 (1), ⟨10.1038/s41467-018-08083-z⟩. ⟨hal-02541939⟩



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