Regulation of starch and sugar levels in tobacco leaves by gibberellic acid
- 1 October 1969
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Botany
- Vol. 47 (10) , 1595-1598
- https://doi.org/10.1139/b69-228
Abstract
Gibberellic acid (GA3) significantly reduced the level of starch in green leaves of tobacco plants. The total α-amylase activity and the specific activities of α-amylase and invertase were increased by GA3 treatment. Hydrolysis of starch during flue-curing contributed greatly to the increased level of reducing sugars in cured leaf tissue; decreasing the level of starch in green leaves by GA3 effectively lowered the level of reducing sugars after curing.Keywords
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