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The Heat Shock Transcription Factor OsHsfA2a Modulates Rice Seed Dormancy and Pre-Harvest Sprouting With OsSD6

Zhang Dong1,2, Xiaobo Zhu1,2, Haoyuan Chen1

  • 1Zhejiang Key Laboratory of Crop Germplasm Innovation and Utilization, Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, Zhejiang Province, China.

Plant, Cell & Environment
|July 9, 2026
PubMed
Summary

OsHsfA2a negatively regulates seed dormancy, controlling pre-harvest sprouting (PHS) and germination. Its knockout mutants show improved PHS resistance without yield loss, offering a strategy for crop improvement.

Keywords:
OsHsfA2aOsSD6abscisic acidpre‐harvest sproutingriceseed dormancy

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