Light-regulated stomatal aperture in Arabidopsis

Chen Chen, Yu Guo Xiao, Xin Li, Min Ni

Research output: Contribution to journalReview articlepeer-review

78 Scopus citations


The stomatal pores of plant leaves, situated in the epidermis and surrounded by a pair of guard cells, allow CO2 uptake for photosynthesis and water loss through transpiration. Blue light is one of the dominant environmental signals that control stomatal movements in leaves of plants in a natural environment. This blue light response is mediated by blue/UV A light-absorbing phototropins (phots) and cryptochromes (crys). Red/far-red light-absorbing phytochromes (phys) also play a role in the control of stomatal aperture. The signaling components that link the perception of light signals to the stomatal opening response are largely unknown. This review discusses a few newly discovered nuclear genes, their function with respect to the phot-, cry-, and phy-mediated signal transduction cascades, and possible involvement of circadian clock.

Original languageEnglish (US)
Pages (from-to)566-572
Number of pages7
JournalMolecular Plant
Issue number3
StatePublished - May 2012

Bibliographical note

Funding Information:
We are grateful for support from the National Science Foundation (MCB1021645 to M.N.). No conflict of interest declared.


  • circadian clock
  • cryptochromes
  • light signaling
  • phototropins
  • phytochromes
  • stomata


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