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Title: Light regulates stomatal development by modulating paracrine signaling from inner tissues
Authors: Wang, Shenqi 
Zhou, Zimin 
Rahiman, Rini 
Lee, Grace Sheen Yee 
Yeo, Yuan Kai
Yang, Xin 
Lau, On Sun 
Issue Date: 7-Jun-2021
Publisher: Nature Research
Citation: Wang, Shenqi, Zhou, Zimin, Rahiman, Rini, Lee, Grace Sheen Yee, Yeo, Yuan Kai, Yang, Xin, Lau, On Sun (2021-06-07). Light regulates stomatal development by modulating paracrine signaling from inner tissues. Nature Communications 12 (1) : 3403. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: Developmental outcomes are shaped by the interplay between intrinsic and external factors. The production of stomata—essential pores for gas exchange in plants—is extremely plastic and offers an excellent system to study this interplay at the cell lineage level. For plants, light is a key external cue, and it promotes stomatal development and the accumulation of the master stomatal regulator SPEECHLESS (SPCH). However, how light signals are relayed to influence SPCH remains unknown. Here, we show that the light-regulated transcription factor ELONGATED HYPOCOTYL 5 (HY5), a critical regulator for photomorphogenic growth, is present in inner mesophyll cells and directly binds and activates STOMAGEN. STOMAGEN, the mesophyll-derived secreted peptide, in turn stabilizes SPCH in the epidermis, leading to enhanced stomatal production. Our work identifies a molecular link between light signaling and stomatal development that spans two tissue layers and highlights how an environmental signaling factor may coordinate growth across tissue types. © 2021, The Author(s).
Source Title: Nature Communications
ISSN: 2041-1723
DOI: 10.1038/s41467-021-23728-2
Rights: Attribution 4.0 International
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