Phloem transport of the receptor, DWARF14 protein, is required for full function of strigolactones

Kameoka, Hiromu, Dun, Elizabeth A., Lopez-Obando, Mauricio, Brewer, Philip B., de Saint Germain, Alexandre, Rameau, Catherine, Beveridge, Christine A. and Kyozuka, Junko (2016) Phloem transport of the receptor, DWARF14 protein, is required for full function of strigolactones. Plant Physiology, 172 3: 1844-1852. doi:10.1104/pp.16.01212


Author Kameoka, Hiromu
Dun, Elizabeth A.
Lopez-Obando, Mauricio
Brewer, Philip B.
de Saint Germain, Alexandre
Rameau, Catherine
Beveridge, Christine A.
Kyozuka, Junko
Title Phloem transport of the receptor, DWARF14 protein, is required for full function of strigolactones
Journal name Plant Physiology   Check publisher's open access policy
ISSN 1532-2548
Publication date 2016-09-26
Year available 2016
Sub-type Article (original research)
DOI 10.1104/pp.16.01212
Open Access Status Not yet assessed
Volume 172
Issue 3
Start page 1844
End page 1852
Total pages 37
Place of publication Rockville, MD, United States
Publisher American Society of Plant Biologists
Language eng
Subject 1314 Physiology
1311 Genetics
1110 Plant Science
Abstract The cell-to-cell transport of signaling molecules is essential for multicellular organisms to coordinate the action of their cells. Recent studies identified DWARF14 (D14) as a receptor of strigolactones (SLs), molecules that act as plant hormones and inhibit shoot branching. Here, we demonstrate that RAMOSUS3 (RMS3), a pea ortholog of D14, works as a graft-transmissible signal to suppress shoot branching. In addition, we show that D14 protein is contained in phloem sap and transported through the phloem to axillary buds in rice. SLs are not required for the transport of D14 protein. Disruption of D14 transport weakens the suppression of axillary bud outgrowth of rice. Taken together, we conclude that the D14 protein works as an intercellular signaling molecule to fine tune SL function. Our findings provide evidence that the intercellular transport of a receptor can regulate the action of plant hormones.
Keyword Plant Sciences
Plant Sciences
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID 22119008
ANR-12-BSV6-004-01
DP110100997
12J04777
Institutional Status UQ
Additional Notes Published online 26 September 2016. ePub ahead of print

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
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Created: Fri, 04 Nov 2016, 18:20:18 EST by Gail Walter on behalf of School of Biological Sciences