Strigolactones enhance competition between shoot branches by dampening auxin transport

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Strigolactones enhance competition between shoot branches by dampening auxin transport. / Crawford, Scott; Shinohara, Naoki; Sieberer, Tobias; Williamson, Lisa; George, Gilu; Hepworth, Jo; Mueller, Doerte; Domagalska, Malgorzata A.; Leyser, Ottoline.

In: Development, Vol. 137, No. 17, 01.09.2010, p. 2905-2913.

Research output: Contribution to journalArticle

Harvard

Crawford, S, Shinohara, N, Sieberer, T, Williamson, L, George, G, Hepworth, J, Mueller, D, Domagalska, MA & Leyser, O 2010, 'Strigolactones enhance competition between shoot branches by dampening auxin transport', Development, vol. 137, no. 17, pp. 2905-2913. https://doi.org/10.1242/dev.051987

APA

Crawford, S., Shinohara, N., Sieberer, T., Williamson, L., George, G., Hepworth, J., ... Leyser, O. (2010). Strigolactones enhance competition between shoot branches by dampening auxin transport. Development, 137(17), 2905-2913. https://doi.org/10.1242/dev.051987

Vancouver

Crawford S, Shinohara N, Sieberer T, Williamson L, George G, Hepworth J et al. Strigolactones enhance competition between shoot branches by dampening auxin transport. Development. 2010 Sep 1;137(17):2905-2913. https://doi.org/10.1242/dev.051987

Author

Crawford, Scott ; Shinohara, Naoki ; Sieberer, Tobias ; Williamson, Lisa ; George, Gilu ; Hepworth, Jo ; Mueller, Doerte ; Domagalska, Malgorzata A. ; Leyser, Ottoline. / Strigolactones enhance competition between shoot branches by dampening auxin transport. In: Development. 2010 ; Vol. 137, No. 17. pp. 2905-2913.

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@article{b8d40cc45b8941fc8215e9f44192eef7,
title = "Strigolactones enhance competition between shoot branches by dampening auxin transport",
abstract = "Strigolactones (SLs), or their derivatives, were recently demonstrated to act as endogenous shoot branching inhibitors, but their biosynthesis and mechanism of action are poorly understood. Here we show that the branching phenotype of mutants in the Arabidopsis P450 family member, MAX1, can be fully rescued by strigolactone addition, suggesting that MAX1 acts in SL synthesis. We demonstrate that SLs modulate polar auxin transport to control branching and that both the synthetic SL GR24 and endogenous SL synthesis significantly reduce the basipetal transport of a second branch-regulating hormone, auxin. Importantly, GR24 inhibits branching only in the presence of auxin in the main stem, and enhances competition between two branches on a common stem. Together, these results support two current hypotheses: that auxin moving down the main stem inhibits branch activity by preventing the establishment of auxin transport out of axillary branches; and that SLs act by dampening auxin transport, thus enhancing competition between branches.",
keywords = "Strigolactone, Auxin transport, Shoot branching, Arabidopsis, ZERO-DOSE CONTROL, ARBUSCULAR MYCORRHIZAL FUNGI, F-BOX PROTEIN, APICAL-DOMINANCE, BUD OUTGROWTH, ARABIDOPSIS-THALIANA, CYTOKININ CONCENTRATION, VASCULAR TISSUE, LEAF SENESCENCE, ACTS DOWNSTREAM",
author = "Scott Crawford and Naoki Shinohara and Tobias Sieberer and Lisa Williamson and Gilu George and Jo Hepworth and Doerte Mueller and Domagalska, {Malgorzata A.} and Ottoline Leyser",
year = "2010",
month = "9",
day = "1",
doi = "10.1242/dev.051987",
language = "English",
volume = "137",
pages = "2905--2913",
journal = "Development",
issn = "0950-1991",
number = "17",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Strigolactones enhance competition between shoot branches by dampening auxin transport

AU - Crawford, Scott

AU - Shinohara, Naoki

AU - Sieberer, Tobias

AU - Williamson, Lisa

AU - George, Gilu

AU - Hepworth, Jo

AU - Mueller, Doerte

AU - Domagalska, Malgorzata A.

AU - Leyser, Ottoline

PY - 2010/9/1

Y1 - 2010/9/1

N2 - Strigolactones (SLs), or their derivatives, were recently demonstrated to act as endogenous shoot branching inhibitors, but their biosynthesis and mechanism of action are poorly understood. Here we show that the branching phenotype of mutants in the Arabidopsis P450 family member, MAX1, can be fully rescued by strigolactone addition, suggesting that MAX1 acts in SL synthesis. We demonstrate that SLs modulate polar auxin transport to control branching and that both the synthetic SL GR24 and endogenous SL synthesis significantly reduce the basipetal transport of a second branch-regulating hormone, auxin. Importantly, GR24 inhibits branching only in the presence of auxin in the main stem, and enhances competition between two branches on a common stem. Together, these results support two current hypotheses: that auxin moving down the main stem inhibits branch activity by preventing the establishment of auxin transport out of axillary branches; and that SLs act by dampening auxin transport, thus enhancing competition between branches.

AB - Strigolactones (SLs), or their derivatives, were recently demonstrated to act as endogenous shoot branching inhibitors, but their biosynthesis and mechanism of action are poorly understood. Here we show that the branching phenotype of mutants in the Arabidopsis P450 family member, MAX1, can be fully rescued by strigolactone addition, suggesting that MAX1 acts in SL synthesis. We demonstrate that SLs modulate polar auxin transport to control branching and that both the synthetic SL GR24 and endogenous SL synthesis significantly reduce the basipetal transport of a second branch-regulating hormone, auxin. Importantly, GR24 inhibits branching only in the presence of auxin in the main stem, and enhances competition between two branches on a common stem. Together, these results support two current hypotheses: that auxin moving down the main stem inhibits branch activity by preventing the establishment of auxin transport out of axillary branches; and that SLs act by dampening auxin transport, thus enhancing competition between branches.

KW - Strigolactone

KW - Auxin transport

KW - Shoot branching

KW - Arabidopsis

KW - ZERO-DOSE CONTROL

KW - ARBUSCULAR MYCORRHIZAL FUNGI

KW - F-BOX PROTEIN

KW - APICAL-DOMINANCE

KW - BUD OUTGROWTH

KW - ARABIDOPSIS-THALIANA

KW - CYTOKININ CONCENTRATION

KW - VASCULAR TISSUE

KW - LEAF SENESCENCE

KW - ACTS DOWNSTREAM

UR - http://www.scopus.com/inward/record.url?scp=77956210642&partnerID=8YFLogxK

U2 - 10.1242/dev.051987

DO - 10.1242/dev.051987

M3 - Article

VL - 137

SP - 2905

EP - 2913

JO - Development

JF - Development

SN - 0950-1991

IS - 17

ER -