WRKY14-DPB Module Enhances Drought Tolerance by Activating the Expression of UGT84B1 Involved in Hydrolyzable Tannin Biosynthesis.
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WRKY14-DPB module activates UGT84B1, boosting hydrolyzable tannin production and increasing drought tolerance in Litsea cubeba by 2.5-fold.
- Why it matters: Drought stress hampers tree growth, especially in economically vital Lauraceae species, and understanding regulatory mechanisms for tannin accumulation can aid in developing drought-resistant plants.
- What they did: The study used molecular biology and transformation techniques to show that LcWRKY14 and LcDPB form a complex that directly binds to the LcUGT84B1 promoter, activating its expression and enhancing HT synthesis.
- The result: Co-overexpression of LcWRKY14 and LcDPB significantly improved drought tolerance, providing a promising genetic strategy for breeding drought-resistant Lauraceae varieties.