Novel R2R3-MYB Transcription Factor Contributes to Petal Blotch Formation by Regulating Organ-Specific Expression of PsCHS in Tree Peony (Paeonia suffruticosa)
Novel R2R3-MYB Transcription Factor Contributes to Petal Blotch Formation by Regulating Organ-Specific Expression of PsCHS in Tree Peony (Paeonia suffruticosa)
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DOI：
10.1093/pcp/pcy232
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
王亮生
中科院分区：
文献类型：
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作者：
Gu Zhaoyu;Zhu Jin;Hao Qing;Yuan Yao-Wu;Duan Yuan-wen;Men Siqi;Wang Qianyu;Hou Qinzheng;Shu Qingyan;王亮生
Flower color patterns play critical roles in plant–pollinator.interactions and represent one of the most common adaptations.during angiosperm evolution. However, the molecular.mechanisms underlying flower color pattern formation.are less understood in non-model organisms. The aim of this.study was to identify genes involved in the formation of.petal blotches in tree peony (Paeonia suffruticosa) through.transcriptome profiling and functional experiments. We.identified an R2R3-MYB gene, PsMYB12, representing a distinct.R2R3-MYB subgroup, with a spatiotemporal expression.pattern tightly associated with petal blotch development..We further demonstrated that PsMYB12 interacts with a.basic helix–loop–helix (bHLH) and a WD40 protein in a.regulatory complex that directly activates PsCHS expression,.which is also specific to the petal blotches. Together, these.findings advance our understanding of the molecular mechanisms.of pigment pattern formation beyond model plants..They also benefit molecular breeding of tree peony cultivars.with novel color patterns and promote germplasm.innovation.
