DELAYED HEADING DATE3, Encoding a Heat Shock Transcription Factor, Delays Flowering Time and Improves Yield in Rice (Oryza sativa L.)

Heading date is an essential agronomic trait that affects adaptability and yield in rice (Oryza sativa). HSFs (heat shock transcription factors) are a type of factor responds to environmental stress organisms. The relationship between the heading has been seldom reported so far. Here, we identified new heat factor, named DELAYED HEADING DATE3 (DHD3), which can significantly delay by about 14 days provide improvements 77% potential rice. DHD3 protein localized nucleus weak transactivation activity. delays suppressing Hd3a RFT1 expression under long-day (LD) short-day (SD) conditions. Furthermore, low-temperature condition greatly enhances effect on (from 16.1% more than 89.3%). We propose may involve temperature-regulated signaling pathway flowering time improve crop yield.