ArticleThe Plant journal : for cell and molecular biology2025
BnaC04.bZIP16 can be phosphorylated and inhibited by BnaA06.SnRK2 and negatively regulates the accumulation of fatty acids in Brassica napus.
Article in The Plant journal : for cell and molecular biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- Identification of candidate genes regulating seed oil and protein content in Brassica napus via integrated genome-wide association and transcriptome analysis.BMC plant biology · 2026Article
- BnaC03.SEIPIN1 improves seed oil content by increasing the number of lipid droplets in Brassica napus.BMC plant biology · 2026Article
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Abstract
Brassica napus is an important oil crop with a significant amount of fatty acid in its seeds. However, the molecular mechanisms of fatty acid synthesis and accumulation are still poorly understood. In this study, we identified a transcription factor, BnaC04.bZIP16, which belongs to the G subfamily of the bZIP family, that negatively regulates the accumulation of fatty acid in B. napus. BnaC04.bZIP16 directly binds to the promoters of BnaA08.OLEOSIN1 and BnaC03.PDH-E1 BETA to regulate seed fatty acid content. Furthermore, BnaC04.bZIP16 can be phosphorylated by the BnaA06.SnRK2. BnaA06.SnRK2-dependent phosphorylation can weaken BnaC04.bZIP16 protein stability as well as the DNA-binding ability. Interestingly, overexpression of BnaA06.SnRK2 can significantly promote the accumulation of fatty acid. Our study identified a new function of BnaC04.bZIP16 in regulating the accumulation of fatty acids in B. napus and added it to the G subfamily of the bZIP family. Furthermore, our study proposed a regulatory pathway, 'BnaA06.SnRK2-BnaC04.bZIP16-BnaA08.OLEOSIN1/BnaC03.PDH-E1 BETA', which provides novel insight into fatty acid biosynthesis.
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