Strigolactones suppress adventitious rooting in arabidopsis and pea

Rasmussen, Amanda, Mason, Michael Glenn, De Cuyper, Carolien, Brewer, Philip B., Herold, Silvia, Agusti, Javier, Geelen, Danny, Greb, Thomas, Goormachtig, Sofie, Beeckman, Tom and Beveridge, Christine Anne (2012) Strigolactones suppress adventitious rooting in arabidopsis and pea. Plant Physiology, 158 4: 1976-1987. doi:10.1104/pp.111.187104


Author Rasmussen, Amanda
Mason, Michael Glenn
De Cuyper, Carolien
Brewer, Philip B.
Herold, Silvia
Agusti, Javier
Geelen, Danny
Greb, Thomas
Goormachtig, Sofie
Beeckman, Tom
Beveridge, Christine Anne
Title Strigolactones suppress adventitious rooting in arabidopsis and pea
Journal name Plant Physiology   Check publisher's open access policy
ISSN 0032-0889
1532-2548
Publication date 2012-04
Sub-type Article (original research)
DOI 10.1104/pp.111.187104
Volume 158
Issue 4
Start page 1976
End page 1987
Total pages 12
Place of publication Rockville, MD, United States
Publisher American Society of Plant Biologists
Collection year 2013
Language eng
Formatted 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.
Keyword Maturation-Related Loss
Auxin Transport
Zeatin Riboside
Stem Cuttings
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online before print February 2012

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
School of Biological Sciences Publications
 
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