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Strigolactones suppress adventitious rooting in Arabidopsis and pea

(2012) PLANT PHYSIOLOGY. 158(4). p.1976-1987
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Abstract
Adventitious root formation is essential for the propagation of many commercially important plant species and involves the formation of roots from nonroot tissues such as stems or leaves. Here, we demonstrate that the plant hormone strigolactone suppresses adventitious root formation in Arabidopsis (Arabidopsis thaliana) and pea (Pisum sativum). Strigolactone-deficient and response mutants of both species have enhanced adventitious rooting. CYCLIN B1 expression, an early marker for the initiation of adventitious root primordia in Arabidopsis, is enhanced in more axillary growth2 (max2), a strigolactone response mutant, suggesting that strigolactones restrain the number of adventitious roots by inhibiting the very first formative divisions of the founder cells. Strigolactones and cytokinins appear to act independently to suppress adventitious rooting, as cytokinin mutants are strigolactone responsive and strigolactone mutants are cytokinin responsive. In contrast, the interaction between the strigolactone and auxin signaling pathways in regulating adventitious rooting appears to be more complex. Strigolactone can at least partially revert the stimulatory effect of auxin on adventitious rooting, and auxin can further increase the number of adventitious roots in max mutants. We present a model depicting the interaction of strigolactones, cytokinins, and auxin in regulating adventitious root formation.
Keywords
ZEATIN RIBOSIDE, STEM CUTTINGS, MATURATION-RELATED LOSS, AUXIN TRANSPORT, POSITIVE REGULATOR, SECONDARY GROWTH, CYTOKININ CONTENT, LEAF SENESCENCE, SHOOT, PLANT

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Chicago
Rasmussen, Amanda, Michael Glenn Mason, Carolien De Cuyper, Philip B Brewer, Silvia Herold, Javier Agusti, Danny Geelen, et al. 2012. “Strigolactones Suppress Adventitious Rooting in Arabidopsis and Pea.” Plant Physiology 158 (4): 1976–1987.
APA
Rasmussen, A., Mason, M. G., De Cuyper, C., Brewer, P. B., Herold, S., Agusti, J., Geelen, D., et al. (2012). Strigolactones suppress adventitious rooting in Arabidopsis and pea. PLANT PHYSIOLOGY, 158(4), 1976–1987.
Vancouver
1.
Rasmussen A, Mason MG, De Cuyper C, Brewer PB, Herold S, Agusti J, et al. Strigolactones suppress adventitious rooting in Arabidopsis and pea. PLANT PHYSIOLOGY. 2012;158(4):1976–87.
MLA
Rasmussen, Amanda, Michael Glenn Mason, Carolien De Cuyper, et al. “Strigolactones Suppress Adventitious Rooting in Arabidopsis and Pea.” PLANT PHYSIOLOGY 158.4 (2012): 1976–1987. Print.
@article{2965445,
  abstract     = {Adventitious root formation is essential for the propagation of many commercially important plant species and involves the formation of roots from nonroot tissues such as stems or leaves. Here, we demonstrate that the plant hormone strigolactone suppresses adventitious root formation in Arabidopsis (Arabidopsis thaliana) and pea (Pisum sativum). Strigolactone-deficient and response mutants of both species have enhanced adventitious rooting. CYCLIN B1 expression, an early marker for the initiation of adventitious root primordia in Arabidopsis, is enhanced in more axillary growth2 (max2), a strigolactone response mutant, suggesting that strigolactones restrain the number of adventitious roots by inhibiting the very first formative divisions of the founder cells. Strigolactones and cytokinins appear to act independently to suppress adventitious rooting, as cytokinin mutants are strigolactone responsive and strigolactone mutants are cytokinin responsive. In contrast, the interaction between the strigolactone and auxin signaling pathways in regulating adventitious rooting appears to be more complex. Strigolactone can at least partially revert the stimulatory effect of auxin on adventitious rooting, and auxin can further increase the number of adventitious roots in max mutants. We present a model depicting the interaction of strigolactones, cytokinins, and auxin in regulating adventitious root formation.},
  author       = {Rasmussen, Amanda and Mason, Michael Glenn and De Cuyper, Carolien and Brewer, Philip B and Herold, Silvia and Agusti, Javier and Geelen, Danny and Greb, Thomas and Goormachtig, Sofie and Beeckman, Tom and Beveridge, Christine Anne},
  issn         = {0032-0889},
  journal      = {PLANT PHYSIOLOGY},
  keyword      = {ZEATIN RIBOSIDE,STEM CUTTINGS,MATURATION-RELATED LOSS,AUXIN TRANSPORT,POSITIVE REGULATOR,SECONDARY GROWTH,CYTOKININ CONTENT,LEAF SENESCENCE,SHOOT,PLANT},
  language     = {eng},
  number       = {4},
  pages        = {1976--1987},
  title        = {Strigolactones suppress adventitious rooting in Arabidopsis and pea},
  url          = {http://dx.doi.org/10.1104/pp.111.187104},
  volume       = {158},
  year         = {2012},
}

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