Spatial regulation of thermomorphogenesis by HY5 and PIF4 in Arabidopsis

Plants respond to high ambient temperature by implementing a suite of morphological changes collectively termed thermomorphogenesis. Here we show that the above and below ground tissue-response to high ambient temperature are mediated by distinct transcription factors. While the central hub transcri...

Full description

Saved in:
Bibliographic Details
Published in:Nature communications 2021-06, Vol.12 (1), p.3656-3656, Article 3656
Main Authors: Lee, Sanghwa, Wang, Wenli, Huq, Enamul
Format: Article
Language:English
Subjects:
14/1
14/35
38/15
38/39
38/88
38/91
631/449/2653/1359
631/449/2675
631/449/2686
64
82/83
96/63
Ambient temperature
Control stability
Elongation
Gene expression
Genes
High temperature
Humanities and Social Sciences
Kinases
Morphology
multidisciplinary
Plant tissues
Science
Science (multidisciplinary)
Shoots
Transcription factors
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Plants respond to high ambient temperature by implementing a suite of morphological changes collectively termed thermomorphogenesis. Here we show that the above and below ground tissue-response to high ambient temperature are mediated by distinct transcription factors. While the central hub transcription factor, PHYTOCHROME INTERCTING FACTOR 4 (PIF4) regulates the above ground tissue response, the below ground root elongation is primarily regulated by ELONGATED HYPOCOTYL 5 (HY5). Plants respond to high temperature by largely expressing distinct sets of genes in a tissue-specific manner. HY5 promotes root thermomorphogenesis via directly controlling the expression of many genes including the auxin and BR pathway genes. Strikingly, the above and below ground thermomorphogenesis is impaired in spaQ . Because SPA1 directly phosphorylates PIF4 and HY5, SPAs might control the stability of PIF4 and HY5 to regulate thermomorphogenesis in both tissues. These data collectively suggest that plants employ distinct combination of SPA-PIF4-HY5 module to regulate tissue-specific thermomorphogenesis. Plants undergo morphological changes collectively termed thermomorphogenesis when exposed to elevated temperature. Here the authors show that the SPA1 kinase regulates distinct thermomorphogenic responses according to tissue type by interactions with PIF4 and HY5 in shoots and roots, respectively.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-021-24018-7