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Regulation of adenosine 5′‐phosphosulfate sulfotransferase by sulfur dioxide in primary leaves of beans (Phaseolus vulgaris)
Author(s) -
WYSS HANSRUDOLF,
BRUNOLD CHRISTIAN
Publication year - 1980
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1980.tb04444.x
Subject(s) - phaseolus , sulfotransferase , chemistry , sulfate , adenosine , sulfation , sulfur , greening , biochemistry , enzyme , botany , biology , organic chemistry , ecology
SO 2 inhibited the light‐induced increase of extractable adenosine 5′‐phosphosulfate sulfotransferase in greening primary leaves of bean seedlings ( Phaseolus vulgaris L. cv. Saxa (Radio) Stamm Vatter). In green primary leaves containing appreciable extractable adenosine 5′‐phosphosulfate sulfotransferase activity, SO 2 treatment for 20 h decreased the activity of the enzyme to between 10 and 20% of the initial level. After removal of SO 2 from the air, the extractable adenosine 5′‐phosphosulfate sulfotransferase activity increased after a lag, both in green and greening primary leaves, and was back to the control level after about 48 h. The sulfate concentration was increased about fourfold during SO 2 treatment. An increase in sulfate sulfur accompanied by a decrease in adenosine 5′‐phosphosulfate sulfotransferase was also observed when bean seedlings, after excision of the roots, were transferred to nutrient solutions containing high sulfate concentrations, suggesting that sulfate is involved in the regulation of the enzyme.