Journal Article

The Main Photoacoustic Gas Uptake Signal Reflects Light-Induced CO<sub>2</sub>-Uptake Associated with Stroma Alkalisation: New Evidence Based on Carbonic-Anhydrase-Antisense Transgenic Tobacco Plants

Heinz Reising, Holger KeB, G. Dean Price, Murray R. Badger and Ulrich Schreiber

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 39, issue 4, pages 462-465
Published in print April 1998 | ISSN: 0032-0781
Published online April 1998 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/oxfordjournals.pcp.a029392
The Main Photoacoustic Gas Uptake Signal Reflects Light-Induced CO2-Uptake Associated with Stroma Alkalisation: New Evidence Based on Carbonic-Anhydrase-Antisense Transgenic Tobacco Plants

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The photoacoustic gas uptake signal correlates with carbonic anhydrase activity in transgenic tobacco plants, various levels of which were induced by antisense RNA [Price et al. (1994) Planta 193: 339]. This is taken as evidence that the uptake signal is caused by C02-solubilisation upon light-driven stroma alkalisation rather than by (O2-uptake.

Keywords: Carbonic anhydrase; CO2-solubilisation; Photoacoustics; Stroma alkalisation; Tobacco leaves

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Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

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