Comparative Metabolic Study of two types of R. Cohrysanthums under UV-B Stress

Background: Rhododendron chrysanthum Pall (R. chrysanthum.), a plant with UV-B resistance mechanisms that can be adapted to alpine environments, has gained attention as an important plant resource with the ability to cope with UV-B stress. Research on the complex mechanism of plant adaptation to UV-B will be aided by these results. Results: In this study, metabolomics analysis and physiological measurements were used to reveal the response of Rhododendron chrysanthum seedlings to UV-B stress. After UV-B irradiation, 404 metabolites were detected. The domesticated R. chrysanthum had high amino acid and SOD content. Conclusions: The study shows that the domesticated R. chrysanthum showed significant UV-B resistance. 26 of these different metabolites were classified as UV-B-responsive metabolites. Glyceric acid is used as a potential UV-B stress biomarker.