Cytosolic calcium oscillation and stomatal oscillation

 

Cytosolic calcium oscillation may induce stomatal oscillation in Vicia faba

Yang H. M., Zhang X. Y., Wang G. X., Li Y., Wei X. P. (2003)

  • State Key Laboratory of Arid Agroecology, Lanzhou University, Lanzhou, Gansu Province 730000, China
  • College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang Province 310027, China

Hui-Min Yang, Xiao-Yan Zhang, Gen-Xuan Wang, Yan Li, Xiao-Ping Wei

in Plant Science 2003;165:1117-1122 –

Google Scholar

https://www.infona.pl/resource/bwmeta1.element.elsevier-370f2cc3-2f0d-33d6-8c20-96e9c5ae2c28

Abstract

Whether guard cell cytosolic calcium ([Ca 2 + ] c y t ) oscillation induced stomatal oscillation was investigated in Vicia faba leaf.

Extracellular Ca 2 + , ABA and H 2 O 2 treatments induced stomata to close in a dose- and time-dependent way. Both steady-state and rapid exchange treatments could first induce a steep decrease in stomatal aperture and then significantly induce stomatal oscillations at small apertures.

Steady-state extracellular Ca 2 + and ABA treatments caused obvious but small and irregular stomatal oscillations, and the oscillations lasted for shorter time, while steady-state H 2 O 2 treatment induced no stomatal oscillation.

Intriguingly, rapid exchange treatments of high [K + ] buffer and high [Ca 2 + ] buffer or high [ABA] buffer induced significant, strong, regular and longer time stomatal oscillations, while no oscillation occurred under H 2 O 2 treatment in the same procedure.

It was likely that [Ca 2 + ] cy t oscillations induced by extracellular Ca 2 + and ABA could induce stomatal oscillations and stomatal oscillations occurred at small apertures.

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Published by

Willem Van Cotthem

Honorary Professor of Botany, University of Ghent (Belgium). Scientific Consultant for Desertification and Sustainable Development.

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