College of Horticulture, Anhui Agricultural University, Hefei 230036, China.
Genes (Basel). 2022 Nov 8;13(11):2064. doi: 10.3390/genes13112064.
Petunia is one of the world's most important flowers, and its branch development has long been a source of discussion. MYB transcription factors have been identified as important plant branching regulators. In this study, 113 R2R3-MYB genes were identified from the petunia genome. genes, closely related to , were expressed at greater levels in axillary buds and roots. Decapitation and 6-BA did not regulate the expression of . PhMYB37 was localized in the nucleus. Heterologous overexpression of promoted shoot branching in transgenic Arabidopsis while silencing of inhibited shoot branching. These results suggest that plays a critical and positive role in petunia shoot branching.
矮牵牛是世界上最重要的花卉之一，其分枝发育一直是讨论的热点。MYB 转录因子已被鉴定为重要的植物分枝调控因子。在这项研究中，从矮牵牛基因组中鉴定出了 113 个 R2R3-MYB 基因。与拟南芥的同源基因，在侧芽和根中表达水平更高。去顶和 6-BA 不调节的表达。PhMYB37 定位于细胞核中。过表达 促进转基因拟南芥的分枝，而 沉默则抑制分枝。这些结果表明在矮牵牛的分枝中起着关键和积极的作用。
