Institute of Pomology and Olericulture, Sichuan Agricultural University, Huimin road 211, Wenjiang district, Chengdu 611130, China.
Biomolecules. 2020 Apr 29;10(5):690. doi: 10.3390/biom10050690.
In order to further explore the mechanism of 'sunshine muscat' grape russet formation, transcriptomic and metabolomic analyses were performed on 'sunshine muscat' grape peels with and without russet. A total of 1491 differentially expressed genes (DEGs) were discovered based on these analyses. The phenylpropane synthesis pathway was the key metabolic pathway identified, and 28 DEGs related to phenylpropane synthesis pathway were screened, of which 16 were related to lignin synthesis. In addition, 60 differential metabolites were screened. There were 29 phenolic substances among the differential metabolites, which were all up-regulated and 10 were quercetin-related glycosides. Our results indicate that phenols likely play a dominant role in the formation of 'sunshine muscat' grape russet, and the synthesis of lignin and quercetin may be the key factors underlying russet formation.
为了进一步探究“阳光玫瑰”葡萄果锈形成的机制，对有果锈和无果锈的“阳光玫瑰”葡萄果皮进行了转录组学和代谢组学分析。共发现 1491 个差异表达基因（DEGs）。苯丙烷合成途径是鉴定的关键代谢途径，筛选出与苯丙烷合成途径相关的 28 个 DEGs，其中 16 个与木质素合成有关。此外，还筛选出 60 种差异代谢物。在差异代谢物中有 29 种酚类物质，均呈上调表达，其中 10 种与槲皮素有关的糖苷。研究结果表明，酚类物质可能在“阳光玫瑰”葡萄果锈形成中起主导作用，木质素和槲皮素的合成可能是果锈形成的关键因素。
