Medicago truncatula ERN Transcription Factors: Regulatory Interplay with NSP1/NSP2 GRAS Factors and Expression Dynamics throughout Rhizobial Infection1[W]
نویسندگان
چکیده
Laboratory of Plant Microbe Interactions, Institut National de Recherche Agronomique (Unité Mixte de Recherche 441), Centre National de Recherche Scientifique (Unité Mixte de Recherche 2594), 31326 Castanet-Tolosan cedex, France (M.R.C., L.F., T.L., M.-C.A., A.N., D.G.B., J.F., F.d.C.-N.); and Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, United Kingdom (G.E.D.O.)
منابع مشابه
Medicago truncatula ERN transcription factors: regulatory interplay with NSP1/NSP2 GRAS factors and expression dynamics throughout rhizobial infection.
Rhizobial nodulation factors (NFs) activate a specific signaling pathway in Medicago truncatula root hairs that involves the complex interplay of Nodulation Signaling Pathway1 (NSP1)/NSP2 GRAS and Ethylene Response Factor Required for Nodulation1 (ERN1) transcription factors (TFs) to achieve full ENOD11 transcription. ERN1 acts as a direct transcriptional regulator of ENOD11 through the activat...
متن کاملStrigolactone biosynthesis in Medicago truncatula and rice requires the symbiotic GRAS-type transcription factors NSP1 and NSP2.
Legume GRAS (GAI, RGA, SCR)-type transcription factors NODULATION SIGNALING PATHWAY1 (NSP1) and NSP2 are essential for rhizobium Nod factor-induced nodulation. Both proteins are considered to be Nod factor response factors regulating gene expression after symbiotic signaling. However, legume NSP1 and NSP2 can be functionally replaced by nonlegume orthologs, including rice (Oryza sativa) NSP1 an...
متن کاملGRAS proteins form a DNA binding complex to induce gene expression during nodulation signaling in Medicago truncatula.
The symbiotic association of legumes with rhizobia involves bacterially derived Nod factor, which is sufficient to activate the formation of nodules on the roots of the host plant. Perception of Nod factor by root hair cells induces calcium oscillations that are a component of the Nod factor signal transduction pathway. Perception of the calcium oscillations is a function of a calcium- and calm...
متن کاملDELLA-mediated gibberellin signalling regulates Nod factor signalling and rhizobial infection
Legumes develop symbiotic interactions with rhizobial bacteria to form nitrogen-fixing nodules. Bacterial Nod factors (NFs) and plant regulatory pathways modulating NF signalling control rhizobial infections and nodulation efficiency. Here we show that gibberellin (GA) signalling mediated by DELLA proteins inhibits rhizobial infections and controls the NF induction of the infection marker ENOD1...
متن کاملGenome-wide characterization of GRAS family genes in Medicago truncatula reveals their evolutionary dynamics and functional diversification
The GRAS gene family is a large plant-specific family of transcription factors that are involved in diverse processes during plant development. Medicago truncatula is an ideal model plant for genetic research in legumes, and specifically for studying nodulation, which is crucial for nitrogen fixation. In this study, 59 MtGRAS genes were identified and classified into eight distinct subgroups ba...
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تاریخ انتشار 2012