ArticleBMC plant biology2026
Exploring the impact of light spectra on growth: unveiling the role of LED light in modulating phytochemical responses of feverfew (Tanacetum parthenium L.).
Article in BMC plant biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundLight serves as a critical environmental signal regulating plant growth, photosynthesis, and metabolite synthesis through physiological mechanisms. Advances in LED technology enable precise control of light spectra; however, the physiological responses of medicinal plants to different spectral qualities remain insufficiently understood. This study investigated the effects of various LED light spectra on growth performance, photosynthetic characteristics, and phytochemical profiles of Tanacetum parthenium.
resultsThe experiment was conducted in a controlled greenhouse at Shahrekord University from April 9 to September 6, 2025 (spring-summer growing season) using a completely randomized design. Plants were grown under natural greenhouse photoperiod conditions until the full flowering stage. Supplemental LED treatments (100% red (R), 100% blue (B), 100% white (W), 50% red:50% blue (50R:50B), 50% red:50% white (50R:50W), and natural greenhouse light (control)) were applied at a photosynthetic photon flux density (PPFD) of 100 μmol m⁻
conclusionsSupplemental spectral manipulation under greenhouse conditions differentially modulated growth patterns and secondary metabolite accumulation in T. parthenium without inducing photochemical stress. These findings highlight the role of wavelength-dependent metabolic regulation in optimizing medicinal plant production.
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