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  • 1
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    LysM domain receptor kinases regulating rhizobial Nod factor-induced infection (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-08-30
    Description: The rhizobial infection of legumes has the most stringent demand toward Nod factor structure of all host responses, and therefore a specific Nod factor entry receptor has been proposed. The SYM2 gene identified in certain ecotypes of pea (Pisum sativum) is a good candidate for such an entry receptor. We exploited the close phylogenetic relationship of pea and the model legume Medicago truncatula to identify genes specifically involved in rhizobial infection. The SYM2 orthologous region of M. truncatula contains 15 putative receptor-like genes, of which 7 are LysM domain-containing receptor-like kinases (LYKs). Using reverse genetics in M. truncatula, we show that two LYK genes are specifically involved in infection thread formation. This, as well as the properties of the LysM domains, strongly suggests that they are Nod factor entry receptors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Limpens, Erik -- Franken, Carolien -- Smit, Patrick -- Willemse, Joost -- Bisseling, Ton -- Geurts, Rene -- New York, N.Y. -- Science. 2003 Oct 24;302(5645):630-3. Epub 2003 Aug 28.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Biology, Department of Plant Sciences, Wageningen University, Dreijenlaan 3, 6703HA, Wageningen, Netherlands.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12947035" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Gene Expression ; *Genes, Plant ; Ligands ; Lipopolysaccharides/*metabolism ; Medicago/genetics/microbiology/*physiology ; Models, Biological ; Molecular Sequence Data ; Mutation ; Nitrogen Fixation ; Peas ; Phenotype ; Plant Roots/*microbiology/physiology ; Protein Kinases/chemistry/*genetics/*metabolism ; Protein Structure, Tertiary ; RNA Interference ; Signal Transduction ; Sinorhizobium meliloti/chemistry/genetics/growth & development/*physiology ; *Symbiosis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    A putative Ca2+ and calmodulin-dependent protein kinase required for bacterial and fungal symbioses (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-02-14
    Description: Legumes can enter into symbiotic relationships with both nitrogen-fixing bacteria (rhizobia) and mycorrhizal fungi. Nodulation by rhizobia results from a signal transduction pathway induced in legume roots by rhizobial Nod factors. DMI3, a Medicago truncatula gene that acts immediately downstream of calcium spiking in this signaling pathway and is required for both nodulation and mycorrhizal infection, has high sequence similarity to genes encoding calcium and calmodulin-dependent protein kinases (CCaMKs). This indicates that calcium spiking is likely an essential component of the signaling cascade leading to nodule development and mycorrhizal infection, and sheds light on the biological role of plant CCaMKs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Levy, Julien -- Bres, Cecile -- Geurts, Rene -- Chalhoub, Boulos -- Kulikova, Olga -- Duc, Gerard -- Journet, Etienne-Pascal -- Ane, Jean-Michel -- Lauber, Emmanuelle -- Bisseling, Ton -- Denarie, Jean -- Rosenberg, Charles -- Debelle, Frederic -- New York, N.Y. -- Science. 2004 Feb 27;303(5662):1361-4. Epub 2004 Feb 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratoire des Interactions Plantes-Microorganismes INRA-CNRS, BP27, 31326 Castanet-Tolosan Cedex, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14963335" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Calcium/metabolism ; Calcium Signaling ; Calcium-Calmodulin-Dependent Protein Kinases/chemistry/genetics/*metabolism ; Calmodulin/metabolism ; Chromosomes, Artificial, Bacterial ; Cloning, Molecular ; EF Hand Motifs ; Expressed Sequence Tags ; Gene Expression Regulation, Plant ; Genes, Plant ; Lipopolysaccharides/metabolism ; Medicago/*enzymology/genetics/microbiology ; Molecular Sequence Data ; Mutation ; Mycorrhizae/*physiology ; Peas/*enzymology/genetics/microbiology ; Plant Roots/enzymology/microbiology ; Protein Structure, Tertiary ; Rhizobium/genetics ; Sinorhizobium meliloti/*physiology ; *Symbiosis ; Transformation, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    NSP1 of the GRAS protein family is essential for rhizobial Nod factor-induced transcription (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-06-18
    Description: Rhizobial Nod factors induce in their legume hosts the expression of many genes and set in motion developmental processes leading to root nodule formation. Here we report the identification of the Medicago GRAS-type protein Nodulation signaling pathway 1 (NSP1), which is essential for all known Nod factor-induced changes in gene expression. NSP1 is constitutively expressed, and so it acts as a primary transcriptional regulator mediating all known Nod factor-induced transcriptional responses, and therefore, we named it a Nod factor response factor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smit, Patrick -- Raedts, John -- Portyanko, Vladimir -- Debelle, Frederic -- Gough, Clare -- Bisseling, Ton -- Geurts, Rene -- New York, N.Y. -- Science. 2005 Jun 17;308(5729):1789-91.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Plant Science, Laboratory of Molecular Biology, Wageningen University, Wageningen 6703 HA, Netherlands.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15961669" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Amino Acid Sequence ; Calcium-Calmodulin-Dependent Protein Kinases/genetics/metabolism ; Cell Nucleus/metabolism ; Cloning, Molecular ; Gene Expression Regulation, Plant ; Genes, Plant ; Lipopolysaccharides/*metabolism ; Medicago/*genetics/metabolism/*microbiology ; Molecular Sequence Data ; Mutation ; Plant Proteins/chemistry/genetics/*metabolism ; Plant Roots/metabolism/microbiology ; Recombinant Fusion Proteins/metabolism ; Sequence Alignment ; Signal Transduction ; Sinorhizobium meliloti/*physiology ; Symbiosis ; Transcription Factors/chemistry/genetics/*metabolism ; *Transcription, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
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    A nodule-specific protein secretory pathway required for nitrogen-fixing symbiosis (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-02-27
    Description: The nitrogen-fixing symbiosis between Sinorhizobium meliloti and its leguminous host plant Medicago truncatula occurs in a specialized root organ called the nodule. Bacteria that are released into plant cells are surrounded by a unique plant membrane compartment termed a symbiosome. We found that in the symbiosis-defective dnf1 mutant of M. truncatula, bacteroid and symbiosome development are blocked. We identified the DNF1 gene as encoding a subunit of a signal peptidase complex that is highly expressed in nodules. By analyzing data from whole-genome expression analysis, we propose that correct symbiosome development in M. truncatula requires the orderly secretion of protein constituents through coordinated up-regulation of a nodule-specific pathway exemplified by DNF1.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Dong -- Griffitts, Joel -- Starker, Colby -- Fedorova, Elena -- Limpens, Erik -- Ivanov, Sergey -- Bisseling, Ton -- Long, Sharon -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2010 Feb 26;327(5969):1126-9. doi: 10.1126/science.1184096.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Stanford University, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20185723" target="_blank"〉PubMed〈/a〉
    Keywords: Endoplasmic Reticulum/metabolism ; Gene Expression ; Gene Expression Profiling ; Genes, Plant ; Medicago truncatula/genetics/*metabolism/*microbiology ; Membrane Proteins/genetics/*metabolism ; Mutation ; *Nitrogen Fixation ; Plant Proteins/genetics/metabolism ; Plants, Genetically Modified ; Protein Subunits/genetics/metabolism ; Root Nodules, Plant/metabolism/*microbiology ; *Secretory Pathway ; Serine Endopeptidases/genetics/*metabolism ; Sinorhizobium meliloti/*physiology ; *Symbiosis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
    Electronic Resource
    Electronic Resource
    Turnover of nitrogenase and leghemoglobin in root nodules of Pisum sativum
    Amsterdam : Elsevier
    BBA Section Nucleic Acids And Protein Synthesis 610 (1980), S. 360-370 
    Details
    ISSN: 0005-2787
    Keywords: (Pisum sativum) ; Chloramphenicol inhibition ; Leghemoglobin ; Nitrogenase ; Protein turnover ; Root nodule
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0005-2787(80)90017-9
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  • 6
    Electronic Resource
    Electronic Resource
    Development of the nitrogen-fixing and protein-synthesizing apparatus of bacteroids in pea root nodules
    Amsterdam : Elsevier
    BBA Section Nucleic Acids And Protein Synthesis 562 (1979), S. 515-526 
    Details
    ISSN: 0005-2787
    Keywords: (Pea root nodule) ; Bacteroid ; Leghemoglobin ; Nitrogen fixation ; Nitrogenase development
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0005-2787(79)90114-X
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