PtrMYB57 contributes to the negative regulation of anthocyanin and proanthocyanidin biosynthesis in poplar

	PtrMYB57 contributes to the negative regulation of anthocyanin and proanthocyanidin biosynthesis in poplar
	Wan, Shuzhen ; Li, Chaofeng ; Ma, Xiaodong ; Luo, Keming
刊名	PLANT CELL REPORTS
	2017-08-01
英文摘要	R2R3-MYB transcription factors (TFs) are important regulators of secondary metabolite biosynthesis in woody species. A series of R2R3-MYB TFs involved in anthocyanin and proanthocyanidin (PA) biosynthesis have been identified in poplar. In this study, we report the identification and characterization of a subgroup 4 MYB member PtrMYB57, which contains a repressor domain (LxLxL) at the C-terminal end. PtrMYB57 encodes an R2R3 MYB protein localized in the nucleus and is predominantly expressed in mature leaves. Transgenic poplar overexpressing PtrMYB57 showed a reduction in anthocyanin and PA accumulation compared to wild-type plants. By contrast, a high anthocyanin and PA phenotype was observed in Ptrmyb57 mutants generated by the CRISPR/Cas9 system. Furthermore, transient expression assays revealed that PtrMYB57 interacted with bHLH131 (bHLH) and PtrTTG1 (WDR) to form the MBW complex and bound to the flavonoid gene promoters, leading to inhibition of these promoters. Taken together, our results suggest that PtrMYB57 plays a negative role in the regulation of anthocyanin and PA biosynthesis in poplar.
内容类型	期刊论文
源URL	[http://ir.nwipb.ac.cn/handle/363003/7070]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Wan, Shuzhen,Li, Chaofeng,Ma, Xiaodong,et al. PtrMYB57 contributes to the negative regulation of anthocyanin and proanthocyanidin biosynthesis in poplar[J]. PLANT CELL REPORTS,2017.
APA	Wan, Shuzhen,Li, Chaofeng,Ma, Xiaodong,&Luo, Keming.(2017).PtrMYB57 contributes to the negative regulation of anthocyanin and proanthocyanidin biosynthesis in poplar.PLANT CELL REPORTS.
MLA	Wan, Shuzhen,et al."PtrMYB57 contributes to the negative regulation of anthocyanin and proanthocyanidin biosynthesis in poplar".PLANT CELL REPORTS (2017).