Experimental studies on sulfur dioxide injuries in higher plants

✍ Scribed by Hirofumi Tanaka; Toshiharu Takanashi; Michihiko Yatazawa

• Publisher: Springer Netherlands
• Year: 1972
• Tongue: English
• Weight: 342 KB
• Volume: 1
• Category: Article
• ISSN: 0049-6979
• DOI: 10.1007/bf00187707

✦ Synopsis

Reversible decrease in CO~ fixation has been reported in rice plants exposed to low concentrations of SO2 (Ma~suoka et al., 1969). Alpha hydroxy sulfonate is thought to form in leaves by an addition-reaction between plant aldehyde and SO~, and to inhibit the process of the photosynthesis. However, the identification of this compound in the leaves has not been successful.

This report deals with the results of the radiochemical experiments to examine the occurrence of glyoxylate bisulfite, c~-hydroxy sulfonate forms of glyoxylic acid in rice plant leaves exposed to radioactive sulfur dioxide. In plants exposed to SO2, sufficient amounts of glyoxylate bisulfite could be formed and thereby inhibit the progress of the path from glicolic to glyoxylic acid.