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May 27, 2026PLANT PHYSIOLOGY

BnaA02.TOP1α and BnaC02.TOP1α redundantly regulate floral organ development in Brassica napus L

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Authors

DPDanshuai PengYGYuan GuoRYRuotong Yang

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Overview

Randomized trial demonstrates that BnaA02.TOP1α and BnaC02.TOP1α influence floral organ development, highlighting genetic regulatory pathways.

Key Points

  • This study investigates how BnaA02.TOP1α and BnaC02.TOP1α regulate floral organ development in Brassica napus.
  • Examined the role of BnaA02.TOP1α and BnaC02.TOP1α gene expression in floral organ development.
  • Analyzed phenotypic changes in a double mutant (s5) of these genes.
  • Studied gene binding, RNA polymerase II recruitment, and histone modifications involved in floral meristem identity.
  • The double mutant s5 exhibited malformed floral organ structures and altered whorl organ numbers.
  • Downregulation of BnaC03.LFY, BnaA08.UFO, and BnaC08.UFO was observed in the mutant.
  • BnaA02.TOP1α promoted recruitment of RNA polymerase II, facilitating gene expression necessary for normal floral organ development.

Cite This Study

Peng et al. (2026) studied this question.

synapsesocial.com/papers/6a1689eb0c924ddd1bd58a26https://doi.org/10.1093/plphys/kiag297
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