【摘 要】
：
The peach(Prunus persica)anthocyanin pathway is controlled by an activation complex,requiring an R2R3 MYB,termed MYB10.Analysis of the peach genome reveals that there are 6 copies of this gene in two
【机 构】
：
Plant and Food Research,Mt Albert Research Centre,Private Bag 92169,Auckland,New Zealand
【出 处】
：
2015 International Conference on Fruit Quality Biology (第二届果
论文部分内容阅读
The peach(Prunus persica)anthocyanin pathway is controlled by an activation complex,requiring an R2R3 MYB,termed MYB10.Analysis of the peach genome reveals that there are 6 copies of this gene in two chromosomal locations.In red foliaged ornamental peaches the control of leaf colour is via mis-regulation of one of these genes,PpMYB10.4.In contrast,peach skin colour appears to be controlled by either PpMYB10.1 and/or PpMYB10.3(Rahim et al 2014).We have examined the blood-fleshed(BL)phenotype of peach.It was found that PpMYB10.1 was upregulated in these cultivars,which then drives increases in anthocyanin levels.However,the causative gene for blood-flesh was found to be a NAC transcription factor.NAC transcription factors regulate the promoter of the PpMYB10.1 gene,in a complex cascade involving activation and repression.These results from peach show how anthocyanin levels can be controlled by tissue,developmental and environmental switches,with implications for other plant species.
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