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  • 1
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    EIN2, a bifunctional transducer of ethylene and stress responses in Arabidopsis (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-06-26
    Description: Ethylene regulates plant growth, development, and responsiveness to a variety of stresses. Cloning of the Arabidopsis EIN2 gene identifies a central component of the ethylene signaling pathway. The amino-terminal integral membrane domain of EIN2 shows similarity to the disease-related Nramp family of metal-ion transporters. Expression of the EIN2 CEND is sufficient to constitutively activate ethylene responses and restores responsiveness to jasmonic acid and paraquat-induced oxygen radicals to mutant plants. EIN2 is thus recognized as a molecular link between previously distinct hormone response pathways. Plants may use a combinatorial mechanism for assessing various stresses by enlisting a common set of signaling molecules.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alonso, J M -- Hirayama, T -- Roman, G -- Nourizadeh, S -- Ecker, J R -- New York, N.Y. -- Science. 1999 Jun 25;284(5423):2148-52.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Plant Science Institute, Department of Biology, University of Pennsylvania, Philadelphia, PA 19104-6018, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10381874" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Arabidopsis/chemistry/genetics/growth & development/*physiology ; *Arabidopsis Proteins ; Carrier Proteins/chemistry ; *Cation Transport Proteins ; Cloning, Molecular ; Cyclopentanes/metabolism/pharmacology ; *Defensins ; Ethylenes/*metabolism/pharmacology ; Gene Expression Regulation, Plant ; Genes, Plant ; Genetic Complementation Test ; Herbicides/pharmacology ; *Iron-Binding Proteins ; Membrane Proteins/chemistry/genetics/*physiology ; Microsomes/metabolism ; Molecular Sequence Data ; Mutation ; Nuclear Proteins/physiology ; Oxylipins ; Paraquat/pharmacology ; Plant Growth Regulators/*metabolism/pharmacology ; Plant Proteins/chemistry/genetics/*physiology ; Plants, Genetically Modified ; Protein Biosynthesis ; Protein Structure, Secondary ; Receptors, Cell Surface/chemistry/genetics/*physiology ; *Signal Transduction ; *Transcription Factors
    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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    GUN4, a regulator of chlorophyll synthesis and intracellular signaling (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-02-08
    Description: Nuclear genes control plastid differentiation in response to developmental signals, environmental signals, and retrograde signals from plastids themselves. In return, plastids emit signals that are essential for proper expression of many nuclear photosynthetic genes. Accumulation of magnesium-protoporphyrin IX (Mg-Proto), an intermediate in chlorophyll biosynthesis, is a plastid signal that represses nuclear transcription through a signaling pathway that, in Arabidopsis, requires the GUN4 gene. GUN4 binds the product and substrate of Mg- chelatase, an enzyme that produces Mg-Proto, and activates Mg-chelatase. Thus, GUN4 participates in plastid-to-nucleus signaling by regulating Mg-Proto synthesis or trafficking.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Larkin, Robert M -- Alonso, Jose M -- Ecker, Joseph R -- Chory, Joanne -- New York, N.Y. -- Science. 2003 Feb 7;299(5608):902-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12574634" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Amino Acid Substitution ; Arabidopsis/*genetics/growth & development/metabolism ; Arabidopsis Proteins/chemistry/*genetics/isolation & purification/*metabolism ; Carrier Proteins/chemistry/*genetics/isolation & purification/*metabolism ; Cell Nucleus/metabolism ; Chlorophyll/*biosynthesis ; Chloroplasts/*metabolism ; Chromosome Mapping ; Chromosomes, Plant ; Cloning, Molecular ; Cyanobacteria/enzymology/genetics/metabolism ; Deuteroporphyrins/metabolism ; Enzyme Activation ; *Genes, Plant ; Genes, Reporter ; *Intracellular Signaling Peptides and Proteins ; Lyases/chemistry/isolation & purification/metabolism ; Magnesium/metabolism ; Molecular Sequence Data ; Mutation ; Mutation, Missense ; Protein Binding ; Protein Subunits/metabolism ; Protein Transport ; Protoporphyrins/*metabolism ; Recombinant Proteins/metabolism ; *Signal Transduction ; Thylakoids/chemistry/enzymology
    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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    A role for peroxisomes in photomorphogenesis and development of Arabidopsis (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-07-20
    Description: The nuclear protein DET1 is a central repressor of photomorphogenesis in plants. We have identified the molecular lesion in ted3, a mutation that dominantly suppresses the phenotypes of det1-1. TED3 encodes a peroxisomal protein (AtPex2p) essential for Arabidopsis growth. Developmental defects and the abnormal expression of many genes in det1 are rescued by ted3. ted3 also partially suppresses another pleiotropic de-etiolated mutant cop1. Thus, peroxisomes, whose functions are still largely unexplored, play a key role in a photomorphogenetic pathway negatively regulated by the DET1 and COP proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hu, Jianping -- Aguirre, Maria -- Peto, Charles -- Alonso, Jose -- Ecker, Joseph -- Chory, Joanne -- New York, N.Y. -- Science. 2002 Jul 19;297(5580):405-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Plant Biology Laboratory, Howard Hughes Medical Institute, Laboratory of Neuronal Structure and Function, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12130786" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Amino Acid Sequence ; Arabidopsis/genetics/*growth & development/physiology ; Arabidopsis Proteins/analysis/chemistry/*genetics/*physiology ; Carrier Proteins/genetics/physiology ; Crosses, Genetic ; Darkness ; Gene Expression Profiling ; Gene Expression Regulation, Plant ; Genes, Plant ; Genes, Suppressor ; Hypocotyl/growth & development ; Indoles/metabolism ; Light ; Membrane Proteins ; Molecular Sequence Data ; Morphogenesis ; Mutation ; Nuclear Proteins/genetics/*physiology ; Peroxisomes/chemistry/*physiology ; Plant Roots/growth & development ; Plants, Genetically Modified ; Recombinant Fusion Proteins ; Transformation, Genetic ; *Ubiquitin-Protein Ligases
    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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    The ethylene signal transduction pathway in plants (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-05-05
    Description: Ethylene (C2H4), the chemically simplest plant hormone, is among the best-characterized plant growth regulators. It participates in a variety of stress responses and developmental processes. Genetic studies in Arabidopsis have defined a number of genes in the ethylene signal transduction pathway. Isolation of two of these genes has revealed that plants sense this gas through a combination of proteins that resemble both prokaryotic and eukaryotic signaling proteins. Ethylene signaling components are likely conserved for responses as diverse as cell elongation, cell fate patterning in the root epidermis, and fruit ripening. Genetic manipulation of these genes will provide agriculture with new tools to prevent or modify ethylene responses in a variety of plants.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ecker, J R -- New York, N.Y. -- Science. 1995 May 5;268(5211):667-75.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, University of Pennsylvania, Philadelphia 19104-6018, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7732375" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; *Ethylenes ; Molecular Sequence Data ; Mutation ; Plant Development ; Plant Growth Regulators/*physiology ; *Plant Physiological Phenomena ; Plants/genetics ; Signal Transduction/*physiology
    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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