Unique and contrasting effects of light and temperature cues on plant transcriptional programs
Jarad, Mai (Centre de Recerca en Agrigenòmica)
Antoniou-Kourounioti, Rea Laila (John Innes Centre)
Hepworth, Jo (John Innes Centre)
Qüesta, Julia I. (Centre de Recerca en Agrigenòmica)

Date:	2020
Abstract:	Plants have adapted to tolerate and survive constantly changing environmental conditions by reprogramming gene expression in response to stress or to drive developmental transitions. Among the many signals that plants perceive, light and temperature are of particular interest due to their intensely fluctuating nature which is combined with a long-term seasonal trend. Whereas specific receptors are key in the light-sensing mechanism, the identity of plant thermosensors for high and low temperatures remains far from fully addressed. This review aims at discussing common as well as divergent characteristics of gene expression regulation in plants, controlled by light and temperature. Light and temperature signaling control the abundance of specific transcription factors, as well as the dynamics of co-transcriptional processes such as RNA polymerase elongation rate and alternative splicing patterns. Additionally, sensing both types of cues modulates gene expression by altering the chromatin landscape and through the induction of long non-coding RNAs (lncRNAs). However, while light sensing is channeled through dedicated receptors, temperature can broadly affect chemical reactions inside plant cells. Thus, direct thermal modifications of the transcriptional machinery add another level of complexity to plant transcriptional regulation. Besides the rapid transcriptome changes that follow perception of environmental signals, plant developmental transitions and acquisition of stress tolerance depend on long-term maintenance of transcriptional states (active or silenced genes). Thus, the rapid transcriptional response to the signal (Phase I) can be distinguished from the long-term memory of the acquired transcriptional state (Phase II - remembering the signal). In this review we discuss recent advances in light and temperature signal perception, integration and memory in Arabidopsis thaliana, focusing on transcriptional regulation and highlighting the contrasting and unique features of each type of cue in the process.
Grants:	Ministerio de Economía y Competitividad SEV-2015-0533
Rights:	Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.
Language:	Anglès
Document:	Article de revisió ; Article ; Versió acceptada per publicar
Subject:	Light and temperature sensing ; Plant transcriptional regulation ; Chromatin dynamics ; Long non-coding RNAs ; Epigenetic memory ; Stress memory
Published in:	Transcription, Vol. 11, issue 3-4 (Oct. 2020) , p. 134-159, ISSN 2154-1264

DOI: 10.1080/21541264.2020.1820299
PMID: 33016207

Postprint 52 p, 1.8 MB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > CRAG (Centre for Research in Agricultural Genomics)
Articles > Published articles