Does Continuous Lighting Induce Premature Leaf Senescence?

using 6 species of aboriginal () and introduced () plants of the Subarctic, it was shown that under continuous lighting (CL) in climate chambers (at constant temperature, humidity, light intensity and spectral composition), plants exhibit a complex of physiological and biochemical changes similar to those that occur during natural leaf aging in nature, namely, the loss of chlorophyll and carotenoids with an increase in the chlorophyll ratio and a decrease in the chlorophyll/carotenoid ratio, a decrease in values, an increase in the content of anthocyanins, hydrogen peroxide and lipid peroxidation products. Based on the data presented in this work and previously obtained data, as well as an analysis of the literature, it was concluded that CL is not a factor inducing the senescence, as some authors suggest, but, like other stressors, causes numerous changes and disturbances in sensitive species, some of which are similar to those observed during natural aging of leaves.