Contrasting interactions between photon spectra and temperature in cold-sensitive basil and cold-tolerant lettuce.

ABSTRACT: Blue (B; 400-499 nm) light, far-red (FR; 700-750 nm) light, and temperature are key regulators of plant growth and development, with responses varying by species. While the independent effects of these environmental signals are well established, their interactive effects are not clear. We postulated that the effects of FR light and temperature would depend on the photon flux density (PFD) of B light. To test this, we grew cold-tolerant lettuce and cold-sensitive basil at 19 and 24°C under lighting treatments with three FR fractions [FR-PFD divided by the sum of red (600-699 nm) and FR PFD; 0.01, 0.19, or 0.32] and two B-PFDs (40 or 100 µmol m^-2 s^-1). The total PFD (400-750 nm; 270 µmol m^-2 s^-1) and photoperiod (24 h d^-1) were the same

SUBMITTER: Shin J 

PROVIDER: S-EPMC12504075 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature