Gibberellin A1 is required for stem elongation in spinach.
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چکیده
منابع مشابه
Gibberellin-auxin interaction in pea stem elongation.
Joint application of gibberellic acid and indole-3-acetic acid to excised stem sections, terminal cuttings, and decapitated plants of a green dwarf pea results in a markedly synergistic growth response to these hormones. Synergism in green tall pea stem sections is comparatively small, although growth is kinetically indistinguishable from similarly treated dwarf sections.Gibberellin-induced gro...
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Loss-of-function mutants of the ACAULIS5 (ACL5) gene in Arabidopsis thaliana have severe defects in stem elongation. ACL5 was previously reported as encoding a spermine synthase. A more recent study, however, showed that the bacterial expressed recombinant ACL5 protein catalyzes the conversion of spermidine to thermospermine, a structural isomer of spermine, rather than to spermine. In the pres...
متن کاملMechanism of gibberellin-dependent stem elongation in peas.
Stem elongation in peas (Pisum sativum L.) is under partial control by gibberellins, yet the mechanism of such control is uncertain. In this study, we examined the cellular and physical properties that govern stem elongation, to determine how gibberellins influence pea stem growth. Stem elongation of etiolated seedlings was retarded with uniconozol, a gibberellin synthesis inhibitor, and the ...
متن کاملInhibition of stem elongation in spinach by theobroxide.
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 analy...
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Membrane phospholipid synthesis was inhibited in Caulobacter crescentus by growth of a glycerol auxotroph in the absence of glycerol or by treatment with the antibiotic cerulenin. It was observed that the final step in the swarmer cell-to-stalked cell transition, stalk elongation, was inhibited under these conditions. Since an early effect of inhibiting phospholipid synthesis in C. crescentus i...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1993
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.90.15.7401