@Article{IPB-430,
author = {Bittner, A. and Hause, B. and Baier, M.},
title = {{Cold-priming causes oxylipin dampening during the early cold and light response of Arabidopsis thaliana}},
year = {2021},
pages = {7163-7179},
journal = {J. Exp. Bot.},
doi = {10.1093/jxb/erab314},
url = {https://doi.org/10.1093/jxb/erab314},
volume = {72},
abstract = {Abstract
               The comparison of transcriptome time-courses of the first 2 h of the cold or highlight response of 24 h cold primed and naive Arabidopsis thaliana showed that priming quickly modifies gene expression in a trigger-specific manner. It dampened up- as well as down-regulation of genes in the cold and in the light. 1/3 of the priming-regulated genes were jasmonate sensitive, including the full set of genes required for oxylipin biosynthesis. qPCR-based analysis in wildtype plants and mutants demonstrated that OPDA (12-oxo phytenoic acid) biosynthesis relative to the jasmonic acid (JA) availability controls dampening of the genes for oxylipin biosynthetic enzymes: Gene regulation in oxylipin biosynthesis mutants more strongly depended on the biosynthesis of the JA precursor OPDA than on its conversion to JA. Additionally, priming-dependent dampening during triggering was more linked to OPDA than to JA level regulation and spray application of OPDA prior to triggering counteracted gene dampening. In contrast to cold-priming induced dampening of ZAT10, priming regulation of the oxylipin hub was insensitive to priming-induced accumulation of thylakoid ascorbate peroxidase and mediated by modulation of the oxylipin sensitivity of genes for OPDA biosynthesis.}    
}