Journal
BIOMOLECULES
Volume 11, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/biom11050668
Keywords
COP9 signalosome; hypomorphic mutant; transcriptional stress memory; histone methylation; recurrent heat stress
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Funding
- Israeli Centers for Research Excellence Program of the Planning and Budgeting Committee
- Israel Science Foundation [060411552/18, 757/12]
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The study revealed the role of CSN5A in regulating the resetting of transcriptional memory genes and H3K4me3 after recurrent heat stress in plants. CSN5A is important for histone methylation and transcriptional stress memory following recurrent heat stress.
In nature, plants are exposed to several environmental stresses that can be continuous or recurring. Continuous stress can be lethal, but stress after priming can increase the tolerance of a plant to better prepare for future stresses. Reports have suggested that transcription factors are involved in stress memory after recurrent stress; however, less is known about the factors that regulate the resetting of stress memory. Here, we uncovered a role for Constitutive Photomorphogenesis 5A (CSN5A) in the regulation of stress memory for resetting transcriptional memory genes (APX2 and HSP22) and H3K4me3 following recurrent heat stress. Furthermore, CSN5A is also required for the deposition of H3K4me3 following recurrent heat stress. Thus, CSN5A plays an important role in the regulation of histone methylation and transcriptional stress memory after recurrent heat stress.
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