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Article: Pseudomonas fluorescens and Glomus mosseae Trigger DMI3-Dependent Activation of Genes Related to a Signal Transduction Pathway in Roots of Medicago truncatula1
- Article from:
- Plant Physiology
- Article date:
- October 1, 2005
- Author:
CopyrightCopyright American Society of Plant Physiologists Oct 2005. Provided by ProQuest LLC. (Hide copyright information)
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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. fluorescews-inoculated roots of a Myc^sup -^Nod^sup -^ genotype (TRV25) of M. truncatula mutated for the DMI3 (syn. MtSYM13) gene. This gene codes a Ca^sup 2+^ and ...