Plant and Cell Physiology, 1984, Vol. 25, No. 6 1095-1098
© 1984
Short Communication |
Gibberellin-Induced Changes in Starch Content in Isolated Chloroplasts of Light-Grown Cucumber Hypocotyls
Department of Biology, International Christian University Mitaka, Tokyo 181, Japan
Gibberellin A3 (GA3) was found to reduce the starch content in chloroplasts isolated from light-grown cucumber (cv. Aonagajibai) hypocotyls. Chloroplasts incubated with 50 mM sucrose showed an increase in starch content. The GA3-induced reduction occurred both in the presence and absence of exogenous sucrose. GA3 had no effect on the level of starch already formed from exogenous sucrose.
(Received April 4, 1984; Accepted June 7, 1984)
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