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

Plant physiology - 2 Jul 2026

Peng Danshuai, Guo Yuan, Yang Ruotong, Li Yueyang, Li Peiting, Zhang Lingchao, Wei Shihao, Yang Dengmao, Liu Zijin, Yang Saiqi, Ye Jiang, Chen Mingxun

Abstract excerpt

Floral organ development is a crucial process in plant life, and its precise regulation is essential for crop yield. In this study, we demonstrate that BnaA02.TOP1α and BnaC02.TOP1α, type IB DNA topoisomerases, play a pivotal role in regulating floral organ development in Brassica napus. The double mutant of these 2 genes, s5, exhibited an increased probability of developing malformed floral organ structures,...

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PMID: 42184349
DOI: 10.1093/plphys/kiag297

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