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The PoSAP8/PoDREB2A-PoDHN1 Module Enhances Thermotolerance in Paeonia ostii.
Plant, Cell & Environment · · Journal Article
Chen, Xu + more
Abstract ↗AI summary
The abstract is read at the publisher; the summary is JClub's.
High temperature induces PoDHN1 in Paeonia ostii, and PoDHN1 silencing significantly compromises thermotolerance, identifying PoDHN1 as a key heat-responsive factor.
- Why it matters: Heat stress strongly suppresses growth in tree peony, but the molecular and genetic regulators of thermotolerance in this woody species remain unclear.
- What they did: The study combined physiological assays with transcriptome sequencing and expression profiling, then used PoDHN1 silencing and promoter/DNA-binding tests showing PoDREB2A activates the PoDHN1 promoter via a DRE motif.
- The result: PoSAP8 physically interacts with PoDREB2A to enhance PoDHN1 promoter activation, establishing the PoSAP8/PoDREB2A–PoDHN1 module as a positive regulator of thermotolerance in Paeonia ostii.
The findingWhy it mattersWhat they didThe result
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