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  • 1
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    A putative ABC transporter confers durable resistance to multiple fungal pathogens in wheat (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-02-21
    Description: Agricultural crops benefit from resistance to pathogens that endures over years and generations of both pest and crop. Durable disease resistance, which may be partial or complete, can be controlled by several genes. Some of the most devastating fungal pathogens in wheat are leaf rust, stripe rust, and powdery mildew. The wheat gene Lr34 has supported resistance to these pathogens for more than 50 years. Lr34 is now shared by wheat cultivars around the world. Here, we show that the LR34 protein resembles adenosine triphosphate-binding cassette transporters of the pleiotropic drug resistance subfamily. Alleles of Lr34 conferring resistance or susceptibility differ by three genetic polymorphisms. The Lr34 gene, which functions in the adult plant, stimulates senescence-like processes in the flag leaf tips and edges.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Krattinger, Simon G -- Lagudah, Evans S -- Spielmeyer, Wolfgang -- Singh, Ravi P -- Huerta-Espino, Julio -- McFadden, Helen -- Bossolini, Eligio -- Selter, Liselotte L -- Keller, Beat -- New York, N.Y. -- Science. 2009 Mar 6;323(5919):1360-3. doi: 10.1126/science.1166453. Epub 2009 Feb 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Plant Biology, University of Zurich, Zollikerstrasse 107, 8008 Zurich, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19229000" target="_blank"〉PubMed〈/a〉
    Keywords: ATP-Binding Cassette Transporters/chemistry/*genetics/*metabolism ; Amino Acid Sequence ; Ascomycota/genetics/*pathogenicity ; Basidiomycota/genetics/*pathogenicity ; Chromosome Mapping ; Chromosomes, Plant/genetics ; Cloning, Molecular ; Exons ; Genes, Plant ; Immunity, Innate ; Molecular Sequence Data ; Mutation ; *Plant Diseases/immunology/microbiology ; Plant Leaves/microbiology ; Plant Proteins/chemistry/genetics/metabolism ; Polymorphism, Single Nucleotide ; Quantitative Trait Loci ; Triticum/*genetics/growth & development/immunology/*microbiology
    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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    The Lr46 Gene Conditions Partial Adult- Plant Resistance to Stripe Rust, Stem Rust, and Powdery Mildew in Thatcher Wheat (2015)
    Wiley
    Details
    Publication Date: 2015-11-01
    Print ISSN: 0011-183X
    Electronic ISSN: 1435-0653
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Wiley
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  • 3
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    Cytosolic activity of cereal rust resistance NLRs [Plant Biology] (2016)
    National Academy of Sciences
    Details
    Publication Date: 2016-09-07
    Description: Plants possess intracellular immune receptors designated “nucleotide-binding domain and leucine-rich repeat” (NLR) proteins that translate pathogen-specific recognition into disease-resistance signaling. The wheat immune receptors Sr33 and Sr50 belong to the class of coiled-coil (CC) NLRs. They confer resistance against a broad spectrum of field isolates of Puccinia graminis f. sp....
    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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  • 4
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    Wide Crosses in Cereals (1992)
    Annual Reviews
    Details
    Publication Date: 1992-06-01
    Print ISSN: 1040-2519
    Topics: Biology
    Published by Annual Reviews
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  • 5
    Electronic Resource
    Electronic Resource
    Cytogenetical studies in wheat. XVIII. Gene Yr24 for resistance to stripe rust (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 119 (2000), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A new gene, Yr24, for resistance to stripe rust was transferred from a durum accession to common wheat via an amphiploid (synthetic wheat) with Aegilops tauschii. Yr24 was located in chromosome 1B by monosomic analysis. Its genetic linkage of 4 cM with Yr15 indicated its localization to the short arm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0523.2000.00449.x
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  • 6
    Electronic Resource
    Electronic Resource
    Wide Crosses in Cereals (1992)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Plant Physiology and Plant Molecular Biology 43 (1992), S. 117-143 
    Details
    ISSN: 1040-2519
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.pp.43.060192.001001
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  • 7
    Electronic Resource
    Electronic Resource
    Phylogenetic relationships of Triticum tauschii, the D genome donor to hexaploid wheat (1989)
    Springer
    Theoretical and applied genetics 77 (1989), S. 851-856 
    Details
    ISSN: 1432-2242
    Keywords: Seed esterases ; D genome ; Isozymes ; T. tauschii ; Phyletic origin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Isoelectric focusing of seed esterase (Est-5) isozymes in 79 T. tauschii accessions from diverse sources revealed the presence of six different seed esterase phenotypes. In one of these phenotypes, exclusive to a var. meyeri accession (AUS 18989), no detectable enzymatic activity was observed. Segregation in crosses between T. tauschii (Dt) accessions confirmed three of the seed esterase phenotypes to be alleles of the designated Est-D t5 gene locus; the inheritance pattern of these isozymes was not affected by the subspecies differences between the parents. On the bases of variation in Est-5 and their Glu-1 and Gli-1 gene loci (in a previous study in this series), only three strangulata accessions showed consistent homology with their prevalent gene expression in the D genome of hexaploid wheat. The implications of these observations for further interpreting the phyletic nature of the D genome donor in natural hexaploid wheat synthesis are also reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00268338
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  • 8
    Electronic Resource
    Electronic Resource
    Identification of quantitative trait loci contributing to Fusarium wilt resistance on an AFLP linkage map of flax (Linum usitatissimum) (1998)
    Springer
    Theoretical and applied genetics 97 (1998), S. 633-641 
    Details
    ISSN: 1432-2242
    Keywords: Key words Flax ; Linum usitatissimum ; AFLP ; Genetic mapping
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  An AFLP genetic linkage map of flax (Linum usitatissimum) was used to identify two quantitative trait loci (QTLs) on independent linkage groups with a major effect on resistance to Fusarium wilt, a serious disease caused by the soil pathogen Fusarium oxysporum (lini). The linkage map was constructed using a mapping population from doubled-haploid (DH) lines. The DH lines were derived from the haploid component of F2 haploid-diploid twin seed originating from a cross between a polyembryonic, low-linolenic-acid genotype (CRZY8/RA91) and the Australian cultivar ‘Glenelg’. The AFLP technique was employed to generate 213 marker loci covering approximately 1400 cM of the flax genome (n=15) with an average spacing of 10 cM and comprising 18 linkage groups. Sixty AFLP markers (28%) deviated significantly (P〈0.05) from the expected segregation ratio. The map incorporated RFLP markers tightly linked to flax rust (Melamspora lini) resistance genes and markers detected by disease resistance gene-like sequences. The study illustrates the potential of the AFLP technique as a robust and rapid method to generate moderately saturated linkage maps, thereby allowing the molecular analysis of traits, such as resistance to Fusarium wilt, that show oligogenic patterns of inheritance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220050939
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  • 9
    Electronic Resource
    Electronic Resource
    Construction and characterisation of a large DNA insert library from the D genome of wheat (1999)
    Springer
    Theoretical and applied genetics 99 (1999), S. 305-313 
    Details
    ISSN: 1432-2242
    Keywords: Key words Binary cosmid ; BAC ; Wheat D genome ; Glutenin ; Disease resistance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  A large DNA fragment library consisting of 144 000 clones with an average insert size of 119 kb was constructed from nuclear DNA isolated from root and leaf tissue from Triticum tauschii (syn. Aegilops tauschii), the D-genome progenitor of wheat. The library was made in a binary vector that had previously been shown to stably maintain large inserts of foreign DNA in Escherichia coli. The use of root nuclei reduced considerably the proportion of the library containing clones derived from chloroplast DNA. Several experimental parameters were investigated and optimised, leading to a high cloning efficiency. Only three ligations were needed to construct the library which was estimated to be equivalent to 3.7 haploid genomes. The accuracy of this estimation was demonstrated by screening this library with three well-defined probes. One probe containing a glutenin gene sequence identified 5 clones covering at least 230 kb of the Glu-D1 locus and contained the two tightly linked high-molecular-weight glutenin genes Glu-D1x and -D1y. Each of the other two single-copy probes derived from the Cre3 cereal cyst nematode resistance gene locus hybridised with 4 clones containing gene sequences encoding nucleotide binding sites and a leucine-rich region. This is the first representative large-insert DNA library for wheat, and the results indicated that large molecules of wheat DNA can be efficiently cloned, stably maintained and manipulated in a bacterial system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220051237
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  • 10
    Electronic Resource
    Electronic Resource
    Phylogenetic relationships of Triticum tauschii the D genome donor to hexaploid wheat (1988)
    Springer
    Theoretical and applied genetics 75 (1988), S. 592-598 
    Details
    ISSN: 1432-2242
    Keywords: D genome ; T. tauschii ; HMW glutenin ; Gliadin blocks
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary High-molecular-weight (HMW) subunits of glutenin (Glu-1) and gliadins (Gli-1 and Gli-2) were used in assessing phylogenetic relationships between T. tauschii and the D genome of hexaploid wheat. The degree of polymorphism in T. tauschii (D t) for these characters occurred in the order: Glu-D t1 〈 Gli-D t2 〈 Gli-D t1; although polymorphism for these traits was quite high, only a limited number of variant forms identified with the Glu-D t1 and Gli-D t1 loci were closely matched to their analogous variants in the D genome of hexaploid wheat. Two-dimensional (LEF X SDS-PAGE) analysis revealed differences between one of the prevalent allelic forms — Glu-D1d — of hexaploid wheat and its corresponding variant in the putative diploid donor, as evident by a relatively more acidic subunit 10 in the latter compared to the former.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00289125
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