Inhibition of stem elongation in spinach by theobroxide.

Abstract:

:In the current study, we investigated the influences of theobroxide on stem elongation in spinach (Spinacia oleracea). Our results showed that stem elongation and flower formation were inhibited by spraying spinach plants with theobroxide under inductive, long day conditions (16 h light/8 h dark), while application of exogenous applied GA3 prevented the effect of theobroxide. Quantitative analysis showed that theobroxide suppressed GA1 biosynthesis, whereas the endogenous content of jasmonic acid was unchanged. However, under short day conditions (10 h light/14 h dark), there were no differences in stem length between treated and untreated plants. These results suggest that the inhibition of stem elongation by theobroxide is probably due to the suppression of gibberellin biosynthesis.

journal_name

J Plant Physiol

authors

Kong F,Gao X,Nam KH,Takahashi K,Matsuura H,Yoshihara T

doi

10.1016/j.jplph.2005.05.005

subject

Has Abstract

pub_date

2006-03-01 00:00:00

pages

557-61

issue

5

eissn

0176-1617

issn

1618-1328

pii

S0176-1617(05)00193-8

journal_volume

163

pub_type

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