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  • 1
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    A MADS-box gene necessary for fruit ripening at the tomato ripening-inhibitor (rin) locus (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-04-16
    Description: Tomato plants harboring the ripening-inhibitor (rin) mutation yield fruits that fail to ripen. Additionally, rin plants display enlarged sepals and loss of inflorescence determinacy. Positional cloning of the rin locus revealed two tandem MADS-box genes (LeMADS-RIN and LeMADS-MC), whose expression patterns suggested roles in fruit ripening and sepal development, respectively. The rin mutation alters expression of both genes. Gene repression and mutant complementation demonstrate that LeMADS-RIN regulates ripening, whereas LeMADS-MC affects sepal development and inflorescence determinacy. LeMADS-RIN demonstrates an agriculturally important function of plant MADS-box genes and provides molecular insight into nonhormonal (developmental) regulation of ripening.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vrebalov, Julia -- Ruezinsky, Diane -- Padmanabhan, Veeraragavan -- White, Ruth -- Medrano, Diana -- Drake, Rachel -- Schuch, Wolfgang -- Giovannoni, Jim -- New York, N.Y. -- Science. 2002 Apr 12;296(5566):343-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉U.S. Department of Agriculture-Agricultural Research Service (USDA-ARS) Plant, Soil and Nutrition Lab and Boyce Thompson Institute for Plant Research, Cornell University, Ithaca, NY 14853, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11951045" target="_blank"〉PubMed〈/a〉
    Keywords: Chromosome Mapping ; Chromosomes, Artificial, Yeast ; Cloning, Molecular ; DNA, Antisense ; DNA, Complementary ; Ethylenes/biosynthesis/pharmacology ; Fruit/physiology ; Gene Expression ; Gene Expression Regulation, Plant ; *Genes, Plant ; Genetic Complementation Test ; Lycopersicon esculentum/*genetics/*physiology ; MADS Domain Proteins/*genetics/physiology ; Molecular Sequence Data ; Mutation ; Phylogeny ; Plant Proteins/*genetics/physiology ; Plant Structures/genetics/physiology ; Plants, Genetically Modified
    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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    Changes in regulation of a transcription factor lead to autogamy in cultivated tomatoes (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-10-27
    Description: We report the cloning of Style2.1, the major quantitative trait locus responsible for a key floral attribute (style length) associated with the evolution of self-pollination in cultivated tomatoes. The gene encodes a putative transcription factor that regulates cell elongation in developing styles. The transition from cross-pollination to self-pollination was accompanied, not by a change in the STYLE2.1 protein, but rather by a mutation in the Style2.1 promoter that results in a down-regulation of Style2.1 expression during flower development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Kai-Yi -- Cong, Bin -- Wing, Rod -- Vrebalov, Julia -- Tanksley, Steven D -- New York, N.Y. -- Science. 2007 Oct 26;318(5850):643-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Plant Breeding and Genetics, Cornell University, Ithaca, NY 14853, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17962563" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Biological Evolution ; Chromosome Mapping ; Cloning, Molecular ; Crosses, Genetic ; Down-Regulation ; Flowers/*anatomy & histology/genetics/growth & development ; Genes, Plant ; Genotype ; Helix-Loop-Helix Motifs ; Lycopersicon esculentum/anatomy & histology/*genetics/*physiology ; Molecular Sequence Data ; Plant Proteins/chemistry/*genetics/metabolism ; Pollen/physiology ; Promoter Regions, Genetic ; Quantitative Trait Loci ; Reproduction ; Sequence Deletion ; Transcription Factors/chemistry/*genetics/metabolism ; 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
    Electronic Resource
    Electronic Resource
    The tomato high-pigment (hp) locus maps to chromosome 2 and influences plastome copy number and fruit quality (1997)
    Springer
    Theoretical and applied genetics 95 (1997), S. 1069-1079 
    Details
    ISSN: 1432-2242
    Keywords: Key words Photomorphogenesis ; Carotenoids ; Flavonoids ; RFLP mapping
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  The tomato (Lycopersicon esculentum) high-pigment (hp) locus was originally described as having enhanced fruit-quality characteristics and has also been shown to regulate responses to light during growth and development. Specifically, the hp phenotype suggests that the normal HP gene-product serves as a negative regulator of light signal-transduction, as has been proposed for many of the previously described Arabidopsis thaliana photomorphogenic mutants. Consequently, hp represents a tool for both genetic dissection of light signal-transduction and manipulation of fruit quality in tomato. As a first step toward isolation of the HP gene, the hp locus was mapped to tomato chromosome 2, adjacent to the 45s rDNA locus, using DNA markers and an interspecific cross of L. esculentum×L. cheesmannii. We have simultaneously identified DNA markers which may be useful for gene isolation and marker-assisted selection. We have additionally extended characterization of the hp phenotype to demonstrate increased sucrose and flavonoid accumulation in ripe hp/hp fruit. Analysis of plastid DNA copy number relative to genomic DNA content indicates that the hp locus regulates plastome DNA concentration, and possibly plastid number, in response to light.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220050664
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  • 4
    Electronic Resource
    Electronic Resource
    Genetic mapping of ripening and ethylene-related loci in tomato (1999)
    Springer
    Theoretical and applied genetics 98 (1999), S. 1005-1013 
    Details
    ISSN: 1432-2242
    Keywords: Key words RFLP mapping ; Fruit ripening ; Ethylene ; Tomato
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  The regulation of tomato fruit development and ripening is influenced by a large number of loci as demonstrated by the number of existing non-allelic fruit development mutations and a multitude of genes showing ripening-related expression patterns. Furthermore, analysis of transgenic and naturally occurring tomato mutants confirms the pivotal role of the gaseous hormone ethylene in the regulation of climacteric ripening. Here we report RFLP mapping of 32 independent tomato loci corresponding to genes known or hypothesized to influence fruit ripening and/or ethylene response. Mapped ethylene-response sequences fall into the categories of genes involved in either hormone biosynthesis or perception, while additional ripening-related genes include those involved in cell-wall metabolism and pigment biosynthesis. The placement of ripening and ethylene-response loci on the tomato RFLP map will facilitate both the identification and exclusion of candidate gene sequences corresponding to identified single gene and quantitative trait loci contributing to fruit development and ethylene response.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220051161
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    Paper (German National Licenses)
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  • 5
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    Manipulation of light signal transduction as a means of modifying fruit nutritional quality in tomato (2004)
    National Academy of Sciences
    Details
    Publication Date: 2004-06-03
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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