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Cited by 166Plant Parasitism and ResistancePlant biochemistry and biosynthesisPlant Molecular Biology Research

Strigolactones stimulate internode elongation independently of gibberellins

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de Saint Germain, Alexandre, Ligerot, Yasmine, Dun, Elizabeth A., Pillot, Jean-Paul, Ross, John J., Beveridge, Christine A., Rameau, Catherine·2013·Plant Physiology
DOI 10.1104/pp.113.220541PMC PMC3793021
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Abstract

Strigolactone (SL) mutants in diverse species show reduced stature in addition to their extensive branching. Here, we show that this dwarfism in pea (Pisum sativum) is not attributable to the strong branching of the mutants. The continuous supply of the synthetic SL GR24 via the root system using hydroponics can restore internode length of the SL-deficient rms1 mutant but not of the SL-response rms4 mutant, indicating that SLs stimulate internode elongation via RMS4. Cytological analysis of internode epidermal cells indicates that SLs control cell number but not cell length, suggesting that SL may affect stem elongation by stimulating cell division. Consequently, SLs can repress (in axillary buds) or promote (in the stem) cell division in a tissue-dependent manner. Because gibberellins (GAs) increase internode length by affecting both cell division and cell length, we tested if SLs stimulate internode elongation by affecting GA metabolism or signaling. Genetic analyses using SL-deficient and GA-deficient or DELLA-deficient double mutants, together with molecular and physiological approaches, suggest that SLs act independently from GAs to stimulate internode elongation.

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  • GAs act independently of SLs to repress branching, as GA- and SL-deficient double mutants in pea displayed stronger branching than single mutants.

    “In pea, GA- and SL-deficient double mutants displayed stronger branching than single mutants, suggesting that GAs act independently of SLs to repress branching”

    From Multiple pathways regulate shoot branching (2015) · cites this paper as de Saint Germain et al., 2013b

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Authors
de Saint Germain, A., Ligerot, Y., Dun, E. A., Pillot, J.-P., Ross, J. J., Beveridge, C. A., & Rameau, C.
Affiliations
  • Institut Jean-Pierre Bourgin, INRA UMR1318, INRA-AgroParisTech, F–78000 Versailles, France (A.d.S.G., Y.L., J-P.P., C.R.)
  • AgroParisTech (FR)
  • The University of Queensland (AU)
  • University of Tasmania (AU)
ORCID
Venue
Plant Physiology
Publisher
Oxford University Press (OUP)
Published
2013-08-13
Volume
163
Issue
2
Pages
1012-1025
ISSN
  • 0032-0889 (ISSN-L)
  • 1532-2548
DOI
10.1104/pp.113.220541
PMC
PMC3793021
OpenAlex
W2167377887
Cited by
166
References
110
Citations by year
2026: 5 · 2025: 5 · 2024: 16 · 2023: 11 · 2022: 16 · 2021: 15 · 2020: 16 · 2019: 18 · 2018: 8 · 2017: 20 · 2016: 12 · 2015: 9 · 2014: 13 · 2013: 2
FWCI
14.49
Type
journal article
Language
en
Open access
Licence
academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model (vor)
Locations
  • PLANT PHYSIOLOGY (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • eCite Digital Repository (University of Tasmania) (submittedVersion)
  • HAL (submittedVersion)
  • Figshare (submittedVersion, cc-by)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Parasitism and Resistance
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Plant biochemistry and biosynthesis
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Molecular Biology Research
Keywords
strigolactones, internode elongation, gibberellin, pea, Pisum sativum, dwarfism, cell division, cell length, DELLA proteins, GR24, axillary buds, stem elongation
MeSH terms
Cell Count, Gibberellins, Lactones, Models, Biological, Molecular Sequence Data, Mutation, Phenotype, Plant Proteins, Arabidopsis, Plant Roots, Meristem, Plant Shoots, Hydroponics, Pisum sativum, Plant Stems, Flowers, Cell Size, Proteolysis

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

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