Metabolomic Analysis on the Petal of ‘Chen Xi’ Rose with Light-Induced Color Changes

Abstract

Flower color is one of the most prominent traits of rose flowers and determines their ornamental value. The color of the “Chen Xi” rose can change from yellow to red during flower blooming. In the present study, the flavonoid metabolites were investigated by the UPLC-ESI-MS/MS from the petals of four successive flower development stages under natural conditions. In total, 176 flavonoid components, including 49 flavones, 59 flavonols, 12 flavanones, 3 isoflavones, 12 anthocyanins, and 41 proanthocyanidins were identified, with some of them being detected for the first time in this study. Additionally, there were 56 compounds that showed differences among comparison groups, mainly being enriched in pathways of isoflavone, flavonoid, flavone, flavonol, phenylpropanoids, and anthocyanin. Among them, it is anthocyanins that allow the rose flower to turn red when exposed to sunlight. To verify this result, compounds from rose petal with shading treatment (S2D) was also detected but could be clearly separated from the four samples under light by clustering and principal component analyses (PCA). Consistent with low anthocyanins accumulation, the flower with shading could not turn red. Moreover, it provides a foundation for further research on the light-induced color modification of flower.

Metabolome and transcriptome integration reveals insights into petals coloration mechanism of three species in Sect. Chrysantha chang

“…Acting as pigments within floral structures, flavonoids contribute to a broad array of hues, encompassing shades of red, purple, blue and yellow. The specific type and combination of flavonoids in a flower dictate its coloration ( Deng, 2021 ). Our investigation involved a comprehensive quantitative and qualitive analysis of the petals from three species within Sect.…”

Metabolite Profiling of External and Internal Petals in Three Different Colors of Tea Flowers (Camellia sinensis) Using Widely Targeted Metabolomics

“…It implied that anthocyanins may be the main reason for their pink formation. Previous studies have also pointed out that epidermal cytochrome deposition in different parts of petals is different, resulting in phenotype changes [ 49 ]. At present, a backcross between the hybrid varieties of Camellia japonica and Camellia nitidissima is being cultivated to increase the accumulation of flavonoids and achieve the transfer of the yellow gene and the cultivation of yellow camellia varieties [ 50 ].…”