UVR8 mediated plant protective responses under low UV-B radiation leading to photosynthetic acclimation

J Photochem Photobiol B. 2014 Aug;137:67-76. doi: 10.1016/j.jphotobiol.2014.03.026. Epub 2014 Apr 13.


The UV-B photoreceptor UVR8 regulates the expression of several genes leading to acclimation responses in plants. Direct role of UVR8 in maintaining the photosynthesis is not defined but it is known to increase the expression of some chloroplastic proteins like SIG5 and ELIP. It provides indirect protection to photosynthesis by regulating the synthesis of secondary metabolites and photomorphogenesis. Signaling cascades controlled by UVR8 mediate many protective responses thus promotes plant acclimation against stress and secures its survival.

Keywords: ELIP; Photomorphogenesis; Photosynthesis; SIG5; UV-B; UVR8.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Acclimatization / radiation effects*
  • Chromosomal Proteins, Non-Histone / genetics
  • Chromosomal Proteins, Non-Histone / metabolism*
  • Photosynthesis / physiology*
  • Photosynthesis / radiation effects*
  • Plant Proteins / genetics
  • Plant Proteins / metabolism*
  • Plants / genetics
  • Plants / metabolism*
  • Ultraviolet Rays*


  • Chromosomal Proteins, Non-Histone
  • Plant Proteins