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  • Ernst-Detlef Schulze
  • Erwin Beck
  • Nina Buchmann
  • Stephan Clemens
  • Klaus Müller-Hohenstein
  • Michael Scherer-Lorenzen
Chapter

Abstract

This chapter is dedicated to the significance of visible light and ultraviolet (UV)-B radiation for plant life. The dual role of radiation in the visible range as an energy source for photosynthesis, and as a signal for the control of a plant’s development, is the focus of the first part of the chapter. Acclimation to the ever-changing light environment is explained, addressing ultrastructural, physiological and molecular aspects. We discuss light stress caused by overexcitation, the emergence of reactive oxygen species (ROS) and the functioning of ROS-scavenging systems, as well as other protective mechanisms such as non-photochemical quenching. Several photoreceptors (phytochromes, cryptochromes, phototropins), each class specific for a particular range of the visible spectrum and connected to overlapping signal transduction cascades, cooperate in the regulation of growth and other developmental processes of a plant. The second major topic of this chapter is UV-B radiation. Following a discussion of damage caused by UV-B, repair mechanisms and the avoidance of UV-B stress by chemical screening are described. Both UV-B stress responses and developmental processes are triggered by UV-B receptors, whose biochemistry and association with signalling chains are discussed. Finally, the crosstalk between UV-B and visible light responses, which is based on the multifunctionality of regulator proteins, is presented.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Ernst-Detlef Schulze
    • 1
  • Erwin Beck
    • 2
  • Nina Buchmann
    • 3
  • Stephan Clemens
    • 2
  • Klaus Müller-Hohenstein
    • 4
  • Michael Scherer-Lorenzen
    • 5
  1. 1.Max Planck Institute for BiogeochemistryJenaGermany
  2. 2.Department of Plant PhysiologyUniversity of BayreuthBayreuthGermany
  3. 3.Department of Environmental Systems ScienceETH ZurichZurichSwitzerland
  4. 4.Department of BiogeographyUniversity of BayreuthBayreuthGermany
  5. 5.Chair of Geobotany, Faculty of BiologyUniversity of FreiburgFreiburgGermany

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