ArticleFrontiers in plant science2026
Rapid photosynthetic induction after short dark periods mitigates growth reduction in lettuce exposed to frequent light-dark cycles.
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
In indoor crop production, light intensity is typically maintained constant throughout the photoperiod. Dynamic lighting strategies, such as dimming or turning off lights during periods of high electricity prices, can help reduce energy costs. However, fluctuating light conditions may negatively affect plant growth. In this study, we quantified the effects of frequent light-dark cycles on lettuce growth and physiological responses. Two lettuce cultivars, 'Rex' and 'Rouxai', were grown under seven treatments that differed in the number of light-dark cycles per 24-h period (1-96 cycles): 16 h light/8 h dark (1 cycle; control), 8 h/4 h (2 cycles), 4 h/2 h (4 cycles), 1 h/30 min (16 cycles), 30 min/15 min (32 cycles), 20 min/10 min (48 cycles), and 10 min/5 min (96 cycles). Across all treatments, light intensity during the light periods was maintained at 300 µmol m
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