Signal integration in the control of shoot branching
Abstract
Shoot branching is a highly plastic developmental process in which axillary buds are formed in the axil of each leaf and may subsequently be activated to give branches. Three classes of plant hormones, auxins, cytokinins and strigolactones (or strigolactone derivatives) are central to the control of bud activation. These hormones move throughout the plant forming a network of systemic signals. The past decade brought great progress in understanding the mechanisms of shoot branching control. Biological and computational studies have led to the proposal of two models, the auxin transport canalization-based model and the second messenger model, which provide mechanistic explanations for apical dominance.
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Auxin maintains RMS1 transcript levels, and hence SL synthesis, and down-regulates CK levels.
“Auxin maintains RMS1 transcript levels, and hence SL synthesis, and down-regulates CK levels.”
From The Pea TCP Transcription Factor PsBRC1 Acts Downstream of Strigolactones to Control Shoot Branching (2012) · cites this paper as Domagalska and Leyser, 2011
SLs reduce PIN accumulation to the plasma membrane via RMS4 but independently of PsBRC1.
“SLs reduce PIN accumulation to the plasma membrane via RMS4 but independently of PsBRC1 and, by reducing the effectiveness of the canalization feedback loop, enhance the competition between active buds.”
From The Pea TCP Transcription Factor PsBRC1 Acts Downstream of Strigolactones to Control Shoot Branching (2012) · cites this paper as Domagalska and Leyser, 2011
SLs, by reducing the effectiveness of the canalization feedback loop, enhance the competition between active buds.
“SLs reduce PIN accumulation to the plasma membrane via RMS4 but independently of PsBRC1 and, by reducing the effectiveness of the canalization feedback loop, enhance the competition between active buds.”
From The Pea TCP Transcription Factor PsBRC1 Acts Downstream of Strigolactones to Control Shoot Branching (2012) · cites this paper as Domagalska and Leyser, 2011
The model that best fits the data would be one in which both regulatory systems coexist.
“The model that best fits with our data would be one in which both regulatory systems, not mutually exclusive, as indicated previously (Domagalska and Leyser, 2011), would coexist (Fig. 6).”
From The Pea TCP Transcription Factor PsBRC1 Acts Downstream of Strigolactones to Control Shoot Branching (2012) · cites this paper as Domagalska and Leyser, 2011
Two models are currently proposed to explain how auxin and SLs interact to control branching: the auxin transport canalization model and the second messenger model.
“Two models are currently proposed to explain how auxin and SLs interact to control branching: the auxin transport canalization model and the second messenger model (Brewer et al., 2009;Domagalska and Leyser, 2011).”
From The Pea TCP Transcription Factor PsBRC1 Acts Downstream of Strigolactones to Control Shoot Branching (2012) · cites this paper as Domagalska and Leyser, 2011
The auxin canalization hypothesis suggests a feed forward mechanism to explain the establishment of polar auxin transport routes that induce the development of vascular tissues.
“The auxin canalization hypothesis (reviewed in Domagalska and Leyser, 2011) suggests a feed forward mechanism to explain the establishment of polar auxin transport routes that induce the development of vascular tissues.”
From Shaping plant architecture (2015) · cites this paper as Domagalska and Leyser, 2011
Cites
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Sugar demand, not auxin, is the initial regulator of apical dominance
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The Pea TCP Transcription Factor PsBRC1 Acts Downstream of Strigolactones to Control Shoot Branching
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“The auxin canalization hypothesis (reviewed in Domagalska and Leyser, 2011) suggests a feed forwardmechanism to explain the establishment of polar auxin transport routes that induce the development of vascular tissues.”
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Using Arabidopsis to Study Shoot Branching in Biomass Willow
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Self-citation
- Authors
- Domagalska, M. A., & Leyser, O.
- Affiliations
- University of York (GB)
- University of Cambridge (GB)
- Corresponding author
- Leyser, Ottoline
- Venue
- Nature Reviews Molecular Cell Biology
- Published
- 2011-03-23
- Volume
- 12
- Issue
- 4
- Pages
- 211-221
- ISSN
- 1471-0072 (ISSN-L)
- 1471-0080
- OpenAlex
- W2047380316
- Cited by
- 835
- References
- 13
- Citations by year
- 2026: 47 · 2025: 49 · 2024: 44 · 2023: 54 · 2022: 70 · 2021: 78 · 2020: 55 · 2019: 50 · 2018: 38 · 2017: 64 · 2016: 40 · 2015: 62 · 2014: 53 · 2013: 62 · 2012: 47
- FWCI
- 5.85
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Nature Reviews Molecular Cell Biology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Gatsby Charitable Foundation
- European Commission
- Directorate for Biological Sciences
- Biotechnology and Biological Sciences Research Council
- Topics
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Parasitism and Resistance
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Molecular Biology Research
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant nutrient uptake and metabolism
- Keywords
- shoot branching, auxin, strigolactones, cytokinins, apical dominance, axillary buds, plant hormone signaling, systemic signaling
- MeSH terms
- Biological Transport, Indoleacetic Acids, Models, Biological, Plant Growth Regulators, Plant Proteins, Plants, Second Messenger Systems, Signal Transduction, Gene Expression Regulation, Plant, Plant Shoots, Plant Development
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