Apical Wilting and Petiole Xylem Vessel Diameter of the rms2 Branching Mutant of Pea are Shoot Controlled and Independent of a Long-Distance Signal Regulating Branching

Dodd, I.C., Ferguson, B.J. and Beveridge, C. A. (2008) Apical Wilting and Petiole Xylem Vessel Diameter of the rms2 Branching Mutant of Pea are Shoot Controlled and Independent of a Long-Distance Signal Regulating Branching. Plant and Cell Physiology, 49 5: 791-800.


Author Dodd, I.C.
Ferguson, B.J.
Beveridge, C. A.
Title Apical Wilting and Petiole Xylem Vessel Diameter of the rms2 Branching Mutant of Pea are Shoot Controlled and Independent of a Long-Distance Signal Regulating Branching
Formatted title Apical Wilting and Petiole Xylem Vessel Diameter of the rms2 Branching Mutant of Pea are Shoot Controlled and Independent of a Long-Distance Signal Regulating Branching
Journal name Plant and Cell Physiology   Check publisher's open access policy
ISSN 0032-0781
Publication date 2008-05
Sub-type Article (original research)
DOI 10.1093/pcp/pcn052
Volume 49
Issue 5
Start page 791
End page 800
Total pages 10
Place of publication United Kingdom
Publisher Oxford University Press
Collection year 2009
Language eng
Subject C1
970106 Expanding Knowledge in the Biological Sciences
0607 Plant Biology
Abstract The main physiological roles of phloem and xylem in higher plants involve the transport of water, nutrients and metabolites. They are also involved, however, in whole plant events including stress responses and long-distance signaling. Phloem and xylem saps therefore include a variety of proteins. In this study, we have performed a shotgun analysis of the proteome of phloem and xylem saps from rice, taking advantage of the complete and available genomic information for this plant. Xylem sap was prepared using the root pressure method, whereas phloem sap was prepared with a unique method with the assistance of planthoppers to ensure the robustness of the detected proteins. The technical difficulties caused by the very limited availability of rice samples were overcome by the use of nano-flow liquid chromatography linked to a mass spectrometer. We identified 118 different proteins and eight different peptides in xylem sap, and 107 different proteins and five different peptides in phloem sap. Signal transduction proteins, putative transcription factors and stress response factors as well as metabolic enzymes were identified in these saps. Interestingly, we found the presence of three TERMINAL FLOWER 1/FLOWERING LOCUS T (FT)-like proteins in phloem sap. The detected FT-like proteins were not rice Hd3a (OsFTL2) itself that acted as a non-cell-autonomous signal for flowering control, but they were members of distinct subfamilies of the FT family with differential expression patterns. These results imply that proteomics on a nano scale is a potent tool for investigation of biological processes in plants.
Keyword FLOWERING LOCUST
Phloem sap
Proteomics
Rice
Xylem sap
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2009 Higher Education Research Data Collection
School of Biological Sciences Publications
 
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Created: Mon, 23 Feb 2009, 13:42:39 EST by Gail Walter on behalf of School of Biological Sciences