The response of stomata to CO2 relates to its effect on respiration and ATP level

Aviv Shaish; Nurit Roth‐Bejerano; Chanan Itai

doi:10.1111/j.1399-3054.1989.tb05460.x

The response of stomata to CO₂ relates to its effect on respiration and ATP level

Aviv Shaish, Nurit Roth‐Bejerano, Chanan Itai

Department of Life Sciences

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

External ATP enhanced stomatal opening of Commelina communis L. differently from EDTA. ATP was more effective in opening stomata than EDTA, when both were applied in amounts yielding equivalent free Ca²⁺ concentration. The stimulation by ATP depended upon its de‐phosphorylation and was not due to the P₁ released. Hence an energetical contribution of external ATP appears possible. Increase in CO₂ concentration increased the stimulation of stomatal opening by ATP and diminished the internal ATP level, ATP/(ADP+AMP) ratio and respiration rate.

Original language	English
Pages (from-to)	107-111
Number of pages	5
Journal	Physiologia Plantarum
Volume	76
Issue number	1
DOIs	https://doi.org/10.1111/j.1399-3054.1989.tb05460.x
State	Published - 1 Jan 1989

Keywords

ATP levels
EDTA
calcium
carbon dioxide
respiration
stomata

ASJC Scopus subject areas

Physiology
Genetics
Plant Science
Cell Biology

Access to Document

10.1111/j.1399-3054.1989.tb05460.x

Cite this

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abstract = "External ATP enhanced stomatal opening of Commelina communis L. differently from EDTA. ATP was more effective in opening stomata than EDTA, when both were applied in amounts yielding equivalent free Ca2+ concentration. The stimulation by ATP depended upon its de‐phosphorylation and was not due to the P1 released. Hence an energetical contribution of external ATP appears possible. Increase in CO2 concentration increased the stimulation of stomatal opening by ATP and diminished the internal ATP level, ATP/(ADP+AMP) ratio and respiration rate.",

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N2 - External ATP enhanced stomatal opening of Commelina communis L. differently from EDTA. ATP was more effective in opening stomata than EDTA, when both were applied in amounts yielding equivalent free Ca2+ concentration. The stimulation by ATP depended upon its de‐phosphorylation and was not due to the P1 released. Hence an energetical contribution of external ATP appears possible. Increase in CO2 concentration increased the stimulation of stomatal opening by ATP and diminished the internal ATP level, ATP/(ADP+AMP) ratio and respiration rate.

AB - External ATP enhanced stomatal opening of Commelina communis L. differently from EDTA. ATP was more effective in opening stomata than EDTA, when both were applied in amounts yielding equivalent free Ca2+ concentration. The stimulation by ATP depended upon its de‐phosphorylation and was not due to the P1 released. Hence an energetical contribution of external ATP appears possible. Increase in CO2 concentration increased the stimulation of stomatal opening by ATP and diminished the internal ATP level, ATP/(ADP+AMP) ratio and respiration rate.

KW - ATP levels

KW - EDTA

KW - calcium

KW - carbon dioxide

KW - respiration

KW - stomata

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