Online citations, reference lists, and bibliographies.
← Back to Search

Evidence That Auxin Promotes Gibberellin A1 Biosynthesis In Pea.

J. Ross, D. O’Neill, J. Smith, L. Kerckhoffs, R. Elliott
Published 2000 · Biology, Medicine

Save to my Library
Download PDF
Analyze on Scholarcy Visualize in Litmaps
Reduce the time it takes to create your bibliography by a factor of 10 by using the world’s favourite reference manager
Time to take this seriously.
Get Citationsy
In shoots of the garden pea, the bioactive gibberellin (GA1) is synthesised from GA20, and the enzyme which catalyses this step (a GA 3-oxidase -- PsGA3ox1) is encoded by Mendel's LE gene. It has been reported previously that decapitation of the shoot (excision of the apical bud) dramatically reduces the conversion of [3H]GA20 to [3H]GA1 in stems, and here we show that endogenous GA1 and PsGA3ox1 transcript levels are similarly reduced. We show also that these effects of decapitation are completely reversed by application of the auxin indole-3-acetic acid (IAA) to the 'stump' of decapitated plants. Gibberellin A20 is also converted to an inactive product, GA29, and this step is catalysed by a GA 2-oxidase, PsGA2ox1. In contrast to PsGA3ox1, PsGA2ox1 transcript levels were increased by decapitation and reduced by IAA application. Decapitation and IAA treatment did not markedly affect the level of GA1 precursors. It is suggested that in intact pea plants, auxin from the apical bud moves into the elongating internodes where it (directly or indirectly) maintains PsGA3ox1 transcript levels and, consequently, GA1 biosynthesis.
This paper references
The Effect of Gibberellic Acid on Shoot Growth of Pea Seedlings
P. W. Brian (1955)
Comparative Effects of Indoleacetic Acid and Gibberellic Acid on Growth of Decapitated Etiolated Epicotyls of Pisum sativum cv. Alaska
E. Davies (1975)
Comparative indole-3-acetic Acid levels in the slender pea and other pea phenotypes.
D. M. Law (1990)
Internode length in Lathyrus odoratus. Effects of mutants l and lb on gibberellin metabolism and levels
J. Ross (1990)
Magnitude and Kinetics of Stem Elongation Induced by Exogenous Indole-3-Acetic Acid in Intact Light-Grown Pea Seedlings
T. Yang (1993)
Decapitation Reduces the Metabolism of Gibberellin A20 to A1 in Pisum sativum L., Decreasing the Le/le Difference
L. Sherriff (1994)
Control of Internode Length in Pisum sativum (Further Evidence for the Involvement of Indole-3-Acetic Acid)
M. J. Mckay (1994)
Genetic regulation of gibberellin deactivation in Pisum
J. Ross (1995)
The gigas mutant in pea is deficient in the floral stimulus
C. Beveridge (1996)
The Five "Classical" Plant Hormones.
H. Kende (1997)
Seed and Hormonal Regulation of Gibberellin 20-Oxidase Expression in Pea Pericarp
R. van Huizen (1997)
Mendel's stem length gene (Le) encodes a gibberellin 3 beta-hydroxylase.
D. R. Lester (1997)
Mendel's dwarfing gene: cDNAs from the Le alleles and function of the expressed proteins.
D. N. Martín (1997)
Auxin-growth relationships in maize coleoptiles and pea internodes and control by auxin of the tissue sensitivity to auxin
Haga (1998)
Effects of Auxin Transport Inhibitors on Gibberellins in Pea
J. Ross (1998)
How does auxin turn on genes?
T. Guilfoyle (1998)
Further evidence for feedback regulation of gibberellin biosynthesis in pea
J. Ross (1999)
Gibberellin 2-oxidation and the SLN gene of Pisum sativum.
D. R. Lester (1999)
The SLENDER gene of pea encodes a gibberellin 2-oxidase.
D. N. Martín (1999)

This paper is referenced by
Effect of Pre-Sowing Magnetic Field Treatment on Enzymes and Phytohormones in Pea (Pisum sativum L.) Seeds and Seedlings
J. Podleśny (2021)
Interaction of gibberellin and other hormones in almond anthers: phenotypic and physiological changes and transcriptomic reprogramming
Peng Li (2021)
Understanding a Mechanistic Basis of ABA Involvement in Plant Adaptation to Soil Flooding: The Current Standing
Yancui Zhao (2021)
Crosstalk between auxin and gibberellin during stalk elongation in flowering Chinese cabbage
Erfeng Kou (2021)
Comparative Transcriptome Analysis Reveals Regulatory Networks during the Maize Ear Shank Elongation Process
Cai-Yun Xiong (2021)
Comparative gene expression analysis reveals that multiple mechanisms regulate the weeping trait in Prunus mume
Lulu Li (2021)
Plant Growth Regulator Impacts on Vegetative Cutting Production of Moroccan Pincushion (Pterocephalus depressus) Plants
S. Markovic (2021)
Biosystems Diversity
L. Mykhalska (2021)
Auxin Interactions with Other Hormones in Plant Development.
Serina Mazzoni-Putman (2021)
Mutation of Arabidopsis Copper-Containing Amine Oxidase Gene AtCuAOδ Alters Polyamines, Reduces Gibberellin Content and Affects Development
B. Alharbi (2020)
Overexpression of SlMBP22 in Tomato Affects Plant Growth and Enhances Tolerance to Drought Stress.
Fenfen Li (2020)
Gibberellins modulate shade-induced soybean hypocotyl elongation downstream of the mutual promotion of auxin and brassinosteroids.
Hengke Jiang (2020)
Indole -3-acetic acid improves drought tolerance of white clover associated with activating auxin-related genes, abscisic acid and jasmonic acid-induced stress responsive transcription factors, and inhibiting senescence genes
Youzhi Zhang (2020)
Controlled Release of Pesticides for Sustainable Agriculture
Sabu Thomas (2020)
Synergisms of Microbial Consortia, N Forms, and Micronutrients Alleviate Oxidative Damage and Stimulate Hormonal Cold Stress Adaptations in Maize
Narges Moradtalab (2020)
Transcriptome profiling provides insights into molecular mechanism in Peanut semi-dwarf mutant
Fengdan Guo (2020)
Crosstalk amongst phytohormones from planta and PGPR under biotic and abiotic stresses
N. Khan (2020)
Changes in endogenous hormone contents during seed germination of Anemone rivularis var. flore-minore
Wenjing Ge (2020)
Overexpression of TaCOMT Improves Melatonin Production and Enhances Drought Tolerance in Transgenic Arabidopsis
Wen-Jing Yang (2019)
Transcriptomic analysis of interstock-induced dwarfism in Sweet Persimmon (Diospyros kaki Thunb.)
Yanying Shen (2019)
Crosstalk among hormones in barley spike contributes to the yield
H. M. Youssef (2019)
Controlled Release of Plant Hormones for Modifying Crop Yield
Vinaya Chandran (2019)
Phytohormonal effects on the regulation of stem elongation of pea (Pisum sativum) subjected to drying soil
Noorliana Mohd Zan (2019)
Comparative co-expression network analysis extracts the SlHSP70 gene affecting to shoot elongation of tomato.
Nam Tuan Vu (2019)
Effect of foliar applications of IAA and GA3 on growth, yield and quality of pea (Pisum sativum L.)
K. Hussain (2020)
The tomato MADS-box gene SlMBP9 negatively regulates lateral root formation and apical dominance by reducing auxin biosynthesis and transport
Anzhou Li (2019)
How plants grow up.
S. McKim (2019)
Auxin biosynthesis in pea : a characterisation of mutants
A. Gélinas-Marion (2019)
Comparative transcriptome analysis reveals a gene expression profile that contributes to rhizome swelling in Panax japonicus var. major
Jun-Rong Tang (2020)
Elevated gibberellin altered morphology, anatomical structure, and transcriptional regulatory networks of hormones in celery leaves
Ao-Qi Duan (2019)
Shoot Architecture I: Regulation of Stem Length
J. Ross (2018)
Cell division and turgor mediate enhanced plant growth in Arabidopsis plants treated with the bacterial signalling molecule lumichrome
M. Pholo (2018)
See more
Semantic Scholar Logo Some data provided by SemanticScholar