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. 1968 Dec;43(12):1947-52.
doi: 10.1104/pp.43.12.1947.

Stomatal Opening in Isolated Epidermal Strips of Vicia faba. I. Response to Light and to CO(2)-free Air

R A Fischer  1
Affiliations

Stomatal Opening in Isolated Epidermal Strips of Vicia faba. I. Response to Light and to CO(2)-free Air

R A Fischer. Plant Physiol. 1968 Dec.

Abstract

This paper reports a consistent and large opening response to light + CO(2)-free air in living stomata of isolated epidermal strips of Vicia faba. The response was compared to that of non-isolated stomata in leaf discs floating on water; stomatal apertures, guard cell solute potentials and starch contents were similar in the 2 situations. To obtain such stomatal behavior, it was necessary to float epidermal strips on dilute KCl solutions. This suggests that solute uptake is necessary for stomatal opening.The demonstration of normal stomatal behavior in isolated epidermal strips provides a very useful system in which to investigate the mechanism of stomatal opening. It was possible to show independent responses in stomatal aperture to light and to CO(2)-free air.

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References

    1. Plant Physiol. 1964 Nov;39(6):952-5 - PubMed
    1. Plant Physiol. 1968 Dec;43(12):1953-8 - PubMed
    1. Q Rev Biol. 1966 Dec;41(4):365-83 - PubMed
    1. Science. 1968 May 17;160(3829):784-5 - PubMed

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