Integrated Transcriptomic and Metabolomic Analyses of the Response of Lutein Accumulation in Marigold Petals to Light Intensity.

ABSTRACT: [Background] Marigold (Tagetes erecta L.) is the main source of the natural pigment lutein. [Methods] In this study, Marigold served as the experimental material for systematic observation of floral organ development. Based on floral morphology and lutein content, the full-flowering stage was identified as the optimal harvesting period. [Results] Under different light intensity gradients (30-1500 μmol·m^-2·s^-1), the highest lutein content in petals occurred at ≈500 μmol·m^-2·s^-1. Increased light intensities promoted flowering and enlarged flower diameter while significantly shortening the growth cycle. Transcriptome analysis revealed that light intensity variation markedly influenced the expression of genes related to metabolic pathways, pla

SUBMITTER: Zhang H 

PROVIDER: S-EPMC12652989 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature