Differential routing of spectral light inputs separates circadian timing from energetic responsiveness
Light simultaneously provides phototrophic organisms with energy and with information about environmental time. These two functions need not impose the same response to fluctuations in irradiance: photosynthetic outputs should remain amplitude-sensitive, whereas circadian phase should reject changes that do not alter dawn, dusk, or photoperiod. We formulate this problem for two spectral inputs by…
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