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Integrating physiological and transcriptomic analyses reveal the role of LrDREB2B in thermotolerance of Lycoris radiata
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DOI：10.1016/j.plantsci.2026.113280.png)
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Abstract
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• Heat stress (42℃) rapidly triggered leaf wilting/rolling, photosynthetic inhibition, membrane damage, and ROS accumulation in Lycoris radiata (L. radiata). • RNA-seq identified LrDREB2B (DREB-A2) as a heat-inducible regulator. • LrDREB2B localized to the nucleus and showed transcriptional activation activity. • LrDREB2B positively contributes to thermotolerance. • LrDREB2B modulated transcripts of the HSF-HSP pathway genes, antioxidant/ROS-scavenging genes, and GolS1, linking it to proteostasis, redox buffering, and galactinol-associated protection.
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