Theobroxide induces tubers in potato (Solanum tuberosum L.) and flower buds in morning glory (Pharbitis nil) under non-inductive high temperatures

Nam, K-H. and Yoshihara, T. (2011) Theobroxide induces tubers in potato (Solanum tuberosum L.) and flower buds in morning glory (Pharbitis nil) under non-inductive high temperatures. Plant Growth Regulation, 64 (3). pp. 311-315.

[img] PDF - Published Version
Restricted to ICRISAT researchers only

Abstract

Induction of some plant organs including tubers and flower buds begins with sensing environmental cues, such as photoperiod and temperature in the leaves. Theobroxide has been shown to induce potato tuberization and flower-bud formation in morning glory under non-inductive photoperiodic conditions, stimulating the activity of lipoxygenase (LOX) and the synthesis of jasmonic acid (JA). In the present study, the ability of theobroxide to overcome the inhibitory effect of unfavorable high temperature on the induction of tubers in potato and flower buds in morning glory was examined. Both tuber induction and flower-bud formation under non-inductive high temperatures were promoted by the application of theobroxide at a high concentration. However, although theobroxide treatment resulted in an increase in fresh weight during potato tuber growth at 30�C, morning glory plants treated with theobroxide at 35�C failed to bloom, implying that theobroxide may assist only in flower-bud formation.

Item Type: Article
Uncontrolled Keywords: Jasmonic acid, 9,10-ketol-octadecadienoic acid, Lipoxygenase, Temperature, Theobroxide, Tuberonic acid glucoside
Author Affiliation: Laboratory of Bio-organic Chemistry, Division of Applied Bioscience, Graduate School of Agriculture, Hokkaido University, Kita 9, Nishi 9, Kitaku, Sapporo 060-8589, Japan e-mail: yosihara@chem.agr.hokudai.ac.jp
Subjects: Plant Production
Divisions: Other Crops
Depositing User: Mr Siva Shankar
Date Deposited: 06 Oct 2012 05:53
Last Modified: 06 Oct 2012 05:53
Official URL: http://dx.doi.org/10.1007/s10725-010-9560-z
URI: http://eprints.icrisat.ac.in/id/eprint/8291

Actions (login required)

View Item View Item