ArticleFrontiers in plant science2026
Beyond peak wavelength: spectral bandwidth of blue and red-blue laser diodes modulates photosynthesis, canopy architecture, chlorophyll maintenance, and whole-plant growth.
Article in Frontiers in plant science, 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
High planting densities in indoor horticulture often accelerate lower-leaf chlorophyll degradation, increasing trimming frequency, reducing effective photosynthetic area, and raising labor costs. While spectral composition has been widely studied, the role of spectral bandwidth, particularly when peak wavelength is identical, remains poorly understood. Here, we used laser diodes (LDs) with an extremely narrow full width at half maximum of light spectrum (FWHM) to examine how spectral bandwidth influences photosynthesis, canopy architecture, chlorophyll degradation in leaves, and plant growth under monochromatic blue light and combined red and blue (R+B) light in tobacco (
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