Plant Physiol.
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
QUICK SEARCH:   [advanced]


     

Plant Physiology Preview
Published on September 23, 2005; 10.1104/pp.105.067603

This Article
Right arrow Full Text (Plant Physiology Preview (PDF))
Right arrow All Versions of this Article:
139/2/1065    most recent
pp.105.067603v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Sanchez, L.
Right arrow Articles by Gianinazzi-Pearson, V.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Sanchez, L.
Right arrow Articles by Gianinazzi-Pearson, V.
Agricola
Right arrow Articles by Sanchez, L.
Right arrow Articles by Gianinazzi-Pearson, V.

Received June 23, 2005
Returned for revision June 23, 2005
Accepted July 13, 2005

Pseudomonas fluorescens and Glomus mosseae Trigger DMI3-Dependent Activation of Genes Related to a Signal Transduction Pathway in Roots of Medicago truncatula

Lisa Sanchez , Stéphanie Weidmann , Christine Arnould , Anne Rose Bernard , Silvio Gianinazzi , and Vivienne Gianinazzi-Pearson *

Unité Mixte de Recherche, Institut National de la Recherche Agronomique 1088/Centre National de la Recherche Scientifique 5184/Université de Bourgogne Plante-Microbe-Environnement, Institut National de la Recherche Agronomique/Centre de Microbiologie du Sol et de l'Environnement, BP 86510, 21065 Dijon cedex, France

* Corresponding author; email: vivienne.gianinazzi-pearson{at}epoisses.inra.fr.

Plant genes induced during early root colonization of Medicago truncatula Gaertn. J5 by a growth-promoting strain of Pseudomonas fluorescens (C7R12) have been identified by suppressive subtractive hybridization. Ten M. truncatula genes, coding proteins associated with a putative signal transduction pathway, showed an early and transient activation during initial interactions between M. truncatula and P. fluorescens, up to 8 d after root inoculation. Gene expression was not significantly enhanced, except for one gene, in P. fluorescens-inoculated roots of a Myc-Nod- genotype (TRV25) of M. truncatula mutated for the DMI3 (syn. MtSYM13) gene. This gene codes a Ca2+ and calmodulin-dependent protein kinase, indicating a possible role of calcium in the cellular interactions between M. truncatula and P. fluorescens. When expression of the 10 plant genes was compared in early stages of root colonization by mycorrhizal and rhizobial microsymbionts, Glomus mosseae activated all 10 genes, whereas Sinorhizobium meliloti only activated one and inhibited four others. None of the genes responded to inoculation by either microsymbiont in roots of the TRV25 mutant. The similar response of the M. truncatula genes to P. fluorescens and G. mosseae points to common molecular pathways in the perception of the microbial signals by plant roots.




This article has been cited by other articles:


Home page
 Plant Physiol.Home page
A. Genre, G. Ortu, C. Bertoldo, E. Martino, and P. Bonfante
Biotic and Abiotic Stimulation of Root Epidermal Cells Reveals Common and Specific Responses to Arbuscular Mycorrhizal Fungi
Plant Physiology, March 1, 2009; 149(3): 1424 - 1434.
[Abstract] [Full Text] [PDF]

Home page
 Sci SignalHome page
M. Crespi and F. Frugier
De Novo Organ Formation from Differentiated Cells: Root Nodule Organogenesis
Sci. Signal., December 9, 2008; 1(49): re11 - re11.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 2005 by the American Society of Plant Biologists