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The Blue Light Response of Stomata and the Green Vacuolar Fluorescence of Guard Cells

  • E. Zeiger
Part of the Proceedings in Life Sciences book series (LIFE SCIENCES)

Abstract

Guard cells modulate gas exchange between the leaf and the environment by regulating the aperture of the stomatal pore. The changes in aperture are mediated by fluctuations in the turgor of the guard cells, which require active ion transport (Hsiao 1976). Light is indisputably a primary factor affecting stomatal opening and closing but its mode of action remains controversial. Two current points of view postulate a purely incidental role for light on the one hand (Raschke 1977) and a primary role in driving ion transport on the other (Zeiger et al. 1977, 1978). The wavelength dependence of the stomatal responses to light provides us with a useful tool to examine the mechanism whereby light affects the opening and closing of stomata. Published data on the subject can be grouped in three classes:
  1. 1.

    The responses show an action spectrum which resembles the absorption spectrum of chlorophyll.

     
  2. 2.

    The responses show maxima in the blue and the red but the effect of blue light is markedly enhanced.

     
  3. 3.

    The responses can be generated by blue light only, red light being ineffective.

     

Keywords

Guard Cell Stomatal Opening Epidermal Peel Stomatal Pore Stomatal Function 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Abbreviations

CCCP

Carbonyl cyanide m-chlorophenyl hydrazone

HEPES

N-2-Hydroxyethyl-piperazine-N’-2-ethanesulfonic acid

MES

2(N-morpholino) ethane sulfonic acid

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Copyright information

© Springer-Verlag Berlin Heidelberg 1980

Authors and Affiliations

  • E. Zeiger
    • 1
  1. 1.Department of Biological SciencesStanford UniversityStanfordUSA

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