Home > Research > Publications & Outputs > GENOMES UNCOUPLED1 plays a key role during the ...

Electronic data

  • New Phytologist - 2022 - Hernndez‐Verdeja - GENOMES UNCOUPLED1 plays a key role during the de‐etiolation process in

    Rights statement: This is the peer reviewed version of the following article: Hernández-Verdeja, T., Vuorijoki, L., Jin, X., Vergara, A., Dubreuil, C. and Strand, Å. (2022), GENOMES UNCOUPLED1 plays a key role during the de-etiolation process in Arabidopsis. New Phytol, 235: 188-203. doi:10.1111/nph.18115 which has been published in final form at https://nph.onlinelibrary.wiley.com/doi/10.1111/nph.18115 This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.

    Accepted author manuscript, 2.75 MB, PDF document

    Embargo ends: 12/04/23

    Available under license: CC BY-NC: Creative Commons Attribution-NonCommercial 4.0 International License

Links

Text available via DOI:

View graph of relations

GENOMES UNCOUPLED1 plays a key role during the de-etiolation process in Arabidopsis

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Published
Close
<mark>Journal publication date</mark>31/07/2022
<mark>Journal</mark>New Phytologist
Issue number1
Volume235
Number of pages16
Pages (from-to)188-203
Publication StatusPublished
Early online date12/04/22
<mark>Original language</mark>English

Abstract

One of the most dramatic challenges in the life of a plant occurs when the seedling emerges from the soil and exposure to light triggers expression of genes required for establishment of photosynthesis. This process needs to be tightly regulated as premature accumulation of light harvesting proteins and photoreactive chlorophyll precursors cause oxidative damage when the seedling is first exposed to light. Photosynthesis genes are encoded by both nuclear and plastid genomes and to establish the required level of control, plastid-to-nucleus (retrograde) signalling is necessary to ensure correct gene expression. We herein show that a negative GUN1-mediated retrograde signal restricts chloroplast development in darkness and during early light response by regulating the transcription of several critical TFs linked to light response, photomorphogenesis, and chloroplast development, and consequently their downstream target genes in Arabidopsis. Thus, the plastids play an essential role during skotomorphogenesis and the early light response and GUN1 acts as a safeguard during the critical step of seedling emergence from darkness.

Bibliographic note

This is the peer reviewed version of the following article: Hernández-Verdeja, T., Vuorijoki, L., Jin, X., Vergara, A., Dubreuil, C. and Strand, Å. (2022), GENOMES UNCOUPLED1 plays a key role during the de-etiolation process in Arabidopsis. New Phytol, 235: 188-203. doi:10.1111/nph.18115 which has been published in final form at https://nph.onlinelibrary.wiley.com/doi/10.1111/nph.18115 This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.