Translational Components Contribute to Acclimation Responses to High Light, Heat, and Cold in Arabidopsis

IScience
Antoni Garcia-MolinaDario Leister

Abstract

Plant metabolism is broadly reprogrammed during acclimation to abiotic changes. Most previous studies have focused on transitions from standard to single stressful conditions. Here, we systematically analyze acclimation processes to levels of light, heat, and cold stress that subtly alter physiological parameters and assess their reversibility during de-acclimation. Metabolome and transcriptome changes were monitored at 11 different time points. Unlike transcriptome changes, most alterations in metabolite levels did not readily return to baseline values, except in the case of cold acclimation. Similar regulatory networks operate during (de-)acclimation to high light and cold, whereas heat and high-light responses exhibit similar dynamics, as determined by surprisal and conditional network analyses. In all acclimation models tested here, super-hubs in conditional transcriptome networks are enriched for components involved in translation, particularly ribosomes. Hence, we suggest that the ribosome serves as a common central hub for the control of three different (de-)acclimation responses.

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Citations

Dec 29, 2020·The Plant Journal : for Cell and Molecular Biology·Tatjana KleineDario Leister
Mar 13, 2021·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Wei JiangWenying Zhang
Jul 3, 2021·Frontiers in Plant Science·Bhavika TiwariWolfgang Frank
Jul 3, 2021·International Journal of Molecular Sciences·Federico Martinez-SeidelAlexandre Augusto Pereira Firmino

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Datasets Mentioned

BETA
GSE125950

Methods Mentioned

BETA
electrophoresis

Software Mentioned

Amadeus
MapMan
DAVID
JASPAR
REVIGO

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