Light responses

Plant responses to light are multiple. Light is an energy source, converted to sugars by photosynthesis. It is also a signal sensed by specific photoreceptors for red, blue and UV-B radiation. Absence of light leads to a developmental program called etiolation. Excess of light constitutes a form of abiotic stress.

Latest Research and Reviews

News and Comment

  • News and Views |

    Light is a critical environmental factor that influences nutrient uptake in roots and the subsequent use of nutrients, which is necessary to sustain plant growth. The positive effect of red light on phosphorus uptake has now been defined, along with the pivotal role of the phytochrome-B signalling cascades that mediate this effect.

    • Hatem Rouached
    Nature Plants 4, 983-984
  • News and Views |

    Seasonal control of flowering is a dramatic example of interactions between genes and environment, and is mostly studied in growth chambers. However, switching from natural settings to artificial conditions affects phenotypes. More natural responses in cabinets can be obtained by only modifying a few environmental parameters.

    • Kayla McCarthy
    •  & Seth J. Davis
    Nature Plants 4, 750-751
  • News and Views |

    Plant growth and development depend on the integration of environmental cues with endogenous signals. Two recent manuscripts provide molecular insights into the mechanism of signal transduction for light and temperature, finding that both impinge on the stability of the PIF3 transcription factor.

    • Thomas Potuschak
    •  & Pascal Genschik
    Nature Plants 3, 846-847