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1
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0032130147
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Structure and function of proteins controlling strain-specific pathogen resistance in plants
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Ellis J., Jones D. Structure and function of proteins controlling strain-specific pathogen resistance in plants. Curr Opin Plant Biol. 1:1998;288-293.
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(1998)
Curr Opin Plant Biol
, vol.1
, pp. 288-293
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Ellis, J.1
Jones, D.2
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2
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0033180530
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Functional analysis of plant disease resistance genes and their downstream effectors
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Martin G.B. Functional analysis of plant disease resistance genes and their downstream effectors. Curr Opin Plant Biol. 2:1999;273-279.
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(1999)
Curr Opin Plant Biol
, vol.2
, pp. 273-279
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Martin, G.B.1
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3
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0033133572
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The Rx gene from potato controls separate virus resistance and cell death responses
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The authors studied an NBS-LRR (non-TIR class) gene for resistance to potato virus X (PVX). The corresponding avr gene in the virus encodes the viral coat protein. The reaction of resistant plants to the virus is described as 'extreme resistance' and does not involve HR. Thus, HR is not required for resistance, at least in this instance. It is shown that lack of HR is not the property of the Rx gene itself, but is caused by a particular anti-viral defense response that is triggered in the Rx-PVX interaction. This response, controlled by unidentified genes, prevents viral replication and gene expression with the consequence that viral coat protein does not accumulate. However, when coat protein is expressed in transgenic Rx plants using a constitutive promoter, HR does occur. The authors conclude that expression of the coat protein from the constitutive promoter is not affected by the anti-viral response and that coat protein accumulates to a threshold level needed for HR induction
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Bendahmane A., Kanyuka K., Baulcombe D. The Rx gene from potato controls separate virus resistance and cell death responses. Plant Cell. 11:1999;781-791. The authors studied an NBS-LRR (non-TIR class) gene for resistance to potato virus X (PVX). The corresponding avr gene in the virus encodes the viral coat protein. The reaction of resistant plants to the virus is described as 'extreme resistance' and does not involve HR. Thus, HR is not required for resistance, at least in this instance. It is shown that lack of HR is not the property of the Rx gene itself, but is caused by a particular anti-viral defense response that is triggered in the Rx-PVX interaction. This response, controlled by unidentified genes, prevents viral replication and gene expression with the consequence that viral coat protein does not accumulate. However, when coat protein is expressed in transgenic Rx plants using a constitutive promoter, HR does occur. The authors conclude that expression of the coat protein from the constitutive promoter is not affected by the anti-viral response and that coat protein accumulates to a threshold level needed for HR induction.
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(1999)
Plant Cell
, vol.11
, pp. 781-791
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Bendahmane, A.1
Kanyuka, K.2
Baulcombe, D.3
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4
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0033165792
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Molecular characterization of the maize Rp1-D rust resistance haplotype and its mutants
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The NBS-LRR gene Rp1-D for maize rust resistance occurs in a complex locus of approximately eight paralogues. Considerable haplotypic variation among maize lines carrying different rp1 resistance specificities is detected by DNA gel-blot analysis. Analysis of 27 mutants recovered from Rp1-D homozygotes shows that nine different deletion events have occurred by unequal crossing-over events that involve several different pairing alternatives. Initial evidence is provided that the recombination occurs in the NBS-LRR coding region and produces chimeric genes
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Collins N., Drake J., Ayliffe M., Sun Q., Ellis J., Hulbert S., Pryor T. Molecular characterization of the maize Rp1-D rust resistance haplotype and its mutants. Plant Cell. 11:1999;1365-1376. The NBS-LRR gene Rp1-D for maize rust resistance occurs in a complex locus of approximately eight paralogues. Considerable haplotypic variation among maize lines carrying different rp1 resistance specificities is detected by DNA gel-blot analysis. Analysis of 27 mutants recovered from Rp1-D homozygotes shows that nine different deletion events have occurred by unequal crossing-over events that involve several different pairing alternatives. Initial evidence is provided that the recombination occurs in the NBS-LRR coding region and produces chimeric genes.
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(1999)
Plant Cell
, vol.11
, pp. 1365-1376
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Collins, N.1
Drake, J.2
Ayliffe, M.3
Sun, Q.4
Ellis, J.5
Hulbert, S.6
Pryor, T.7
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5
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0033231647
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The Arabidopsis RPS4 bacterial-resistance gene is a member of the TIR-NBS-LRR family of disease-resistance genes
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The authors identified the first TIR-NBS-LRR R gene, RPS4 from Arabidopsis, that confers resistance to a bacterial pathogen (Pseudomonas syringe). This finding indicates that particular NBS-LRR R-gene classes are not matched to specific pathogen species
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Gassmann W., Hinsch M.E., Staskawicz B.J. The Arabidopsis RPS4 bacterial-resistance gene is a member of the TIR-NBS-LRR family of disease-resistance genes. Plant J. 20:1999;265-277. The authors identified the first TIR-NBS-LRR R gene, RPS4 from Arabidopsis, that confers resistance to a bacterial pathogen (Pseudomonas syringe). This finding indicates that particular NBS-LRR R-gene classes are not matched to specific pathogen species.
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(1999)
Plant J
, vol.20
, pp. 265-277
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Gassmann, W.1
Hinsch, M.E.2
Staskawicz, B.J.3
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6
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0032205838
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Intragenic recombination and diversifying selection contribute to the evolution of downy mildew resistance at the RPP8 locus of Arabidopsis
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McDowell J.M., Dhandaydham M., Long T.A., Aarts M.G.M., Goff S., Holub E.B., Dangl J.L. Intragenic recombination and diversifying selection contribute to the evolution of downy mildew resistance at the RPP8 locus of Arabidopsis. Plant Cell. 10:1998;1861-1874.
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(1998)
Plant Cell
, vol.10
, pp. 1861-1874
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McDowell, J.M.1
Dhandaydham, M.2
Long, T.A.3
Aarts, M.G.M.4
Goff, S.5
Holub, E.B.6
Dangl, J.L.7
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7
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0033598829
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Expression of the Bs2 pepper gene confers resistance to bacterial spot disease in tomato
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A description of a non-TIR class NBS-LRR R gene from Capsicum that is notable for an enormous intron (27 kb) that made isolation and identification of the gene difficult. This gene, which corresponds to the avrBs2 avirulence gene in the bacterial pathogen Xanthomonas campestris, has been 'durable' in agriculture. That is, no pathogenic strains of the pathogen lacking avrBs2 have emerged in spite of strong selection pressure imposed by the use of this gene in commercial pepper cultivars. Mutation of the avrBs2 gene seems to reduce fitness of the pathogen. This observation underlines the potential role for 'defeated' R genes in natural populations. Such host genes prevent the increase in frequency of the corresponding avr genes in the pathogen, thus potentially decreasing the overall fitness of the pathogen population
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Tai T.H., Dahlbeck D., Clark E.T., Gajiwala P., Pasion R., Whalen M.C., Stall R.E., Staskawicz B.J. Expression of the Bs2 pepper gene confers resistance to bacterial spot disease in tomato. Proc Natl Acad Sci USA. 96:1999;14153-14158. A description of a non-TIR class NBS-LRR R gene from Capsicum that is notable for an enormous intron (27 kb) that made isolation and identification of the gene difficult. This gene, which corresponds to the avrBs2 avirulence gene in the bacterial pathogen Xanthomonas campestris, has been 'durable' in agriculture. That is, no pathogenic strains of the pathogen lacking avrBs2 have emerged in spite of strong selection pressure imposed by the use of this gene in commercial pepper cultivars. Mutation of the avrBs2 gene seems to reduce fitness of the pathogen. This observation underlines the potential role for 'defeated' R genes in natural populations. Such host genes prevent the increase in frequency of the corresponding avr genes in the pathogen, thus potentially decreasing the overall fitness of the pathogen population.
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(1999)
Proc Natl Acad Sci USA
, vol.96
, pp. 14153-14158
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Tai, T.H.1
Dahlbeck, D.2
Clark, E.T.3
Gajiwala, P.4
Pasion, R.5
Whalen, M.C.6
Stall, R.E.7
Staskawicz, B.J.8
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8
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0033166093
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The Pib gene for rice blast resistance belongs to the nucleotide binding and leucine-rich repeat class of plant disease resistance genes
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Pib is the first R gene described that controls resistance to the very important rice blast pathogen Magnaporthe grisea. The authors underline the caution needed in interpreting data on whether R-gene mRNA levels are influenced by pathogen infection
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Wang Z.X., Yano M., Yamanouchi U., Iwamoto M., Monna L., Hayasaka H., Katayose Y., Sasaki T. The Pib gene for rice blast resistance belongs to the nucleotide binding and leucine-rich repeat class of plant disease resistance genes. Plant J. 19:1999;55-64. Pib is the first R gene described that controls resistance to the very important rice blast pathogen Magnaporthe grisea. The authors underline the caution needed in interpreting data on whether R-gene mRNA levels are influenced by pathogen infection.
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(1999)
Plant J
, vol.19
, pp. 55-64
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Wang, Z.X.1
Yano, M.2
Yamanouchi, U.3
Iwamoto, M.4
Monna, L.5
Hayasaka, H.6
Katayose, Y.7
Sasaki, T.8
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9
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0033231602
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Plant disease resistance genes encode members of an ancient and diverse protein family within the nucleotide-binding superfamily
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An extensive phylogenetic analysis of over 400 NBS-LRR related sequences from several plant species that are represented in several public and private DNA databases. The Arabidopsis thaliana database is the most extensive followed by the rice database
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Meyers B.C., Dickerman A.W., Michelmore R.W., Sivaramakrishnan S., Sobral B.W., Young N.D. Plant disease resistance genes encode members of an ancient and diverse protein family within the nucleotide-binding superfamily. Plant J. 20:1999;317-332. An extensive phylogenetic analysis of over 400 NBS-LRR related sequences from several plant species that are represented in several public and private DNA databases. The Arabidopsis thaliana database is the most extensive followed by the rice database.
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(1999)
Plant J
, vol.20
, pp. 317-332
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Meyers, B.C.1
Dickerman, A.W.2
Michelmore, R.W.3
Sivaramakrishnan, S.4
Sobral, B.W.5
Young, N.D.6
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10
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0033230488
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Pronounced intraspecific haplotype divergence at the RPP5 complex disease resistance locus of Arabidopsis
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This paper describes the first analysis of the complete sequence of a complex R-gene locus. Sequence information from two haplotypes, one from Landsberg erecta (95 kb) and one from Columbia ecotypes (90 kb), is analysed and molecular events, such as point mutations causing premature stop codons, transposon insertion and diversifying selection, acting on the LRR region are uncovered
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Noel L., Moores T.L., van Der Biezen E.A., Parniske M., Daniels M.J., Parker J.E., Jones J.D.G. Pronounced intraspecific haplotype divergence at the RPP5 complex disease resistance locus of Arabidopsis. Plant Cell. 11:1999;2099-2112. This paper describes the first analysis of the complete sequence of a complex R-gene locus. Sequence information from two haplotypes, one from Landsberg erecta (95 kb) and one from Columbia ecotypes (90 kb), is analysed and molecular events, such as point mutations causing premature stop codons, transposon insertion and diversifying selection, acting on the LRR region are uncovered.
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(1999)
Plant Cell
, vol.11
, pp. 2099-2112
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Noel, L.1
Moores, T.L.2
Van Der Biezen, E.A.3
Parniske, M.4
Daniels, M.J.5
Parker, J.E.6
Jones, J.D.G.7
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11
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0032754045
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The Mla (powdery mildew) resistance cluster is associated with three NBS-LRR gene families and suppressed recombination within a 240 kb DNA interval on chromosome 5S (1HS) of barley
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Wei F., Gobelman-Werner K., Morroll S.M., Kurth J., Mao L., Wing R., Leister D., Schulze-Lefert P., Wise R.P. The Mla (powdery mildew) resistance cluster is associated with three NBS-LRR gene families and suppressed recombination within a 240 kb DNA interval on chromosome 5S (1HS) of barley. Genetics. 153:1999;1929-1948.
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(1999)
Genetics
, vol.153
, pp. 1929-1948
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Wei, F.1
Gobelman-Werner, K.2
Morroll, S.M.3
Kurth, J.4
Mao, L.5
Wing, R.6
Leister, D.7
Schulze-Lefert, P.8
Wise, R.P.9
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12
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0033213721
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The Arabidopsis CLAVATA2 gene encodes a receptor-like protein required for the stability of the CLAVATA1 receptor-like kinase
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The CLV system in Arabidopsis provides a model for Cf R-gene function. It is interesting to note that the CLV1 coding region (encoding an LRR protein) is highly polymorphic with respect to other single copy genes in Arabidopsis. Nevertheless, in contrast to LRR regions of R genes, CLV1 is not under diversifying selection and the variation is not concentrated in the DNA-sequence encoding the xxLxLxx structural motif of the LRR, which is the variable region in R genes
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Jeong S., Trotochaud A.E., Clark S.E. The Arabidopsis CLAVATA2 gene encodes a receptor-like protein required for the stability of the CLAVATA1 receptor-like kinase. Plant Cell. 11:1999;1925-1934. The CLV system in Arabidopsis provides a model for Cf R-gene function. It is interesting to note that the CLV1 coding region (encoding an LRR protein) is highly polymorphic with respect to other single copy genes in Arabidopsis. Nevertheless, in contrast to LRR regions of R genes, CLV1 is not under diversifying selection and the variation is not concentrated in the DNA-sequence encoding the xxLxLxx structural motif of the LRR, which is the variable region in R genes.
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(1999)
Plant Cell
, vol.11
, pp. 1925-1934
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Jeong, S.1
Trotochaud, A.E.2
Clark, S.E.3
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13
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0032076826
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Xa21D encodes a receptor-like molecule with a leucine-rich repeat domain that determines race-specific recognition and is subject to adaptive evolution
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Wang G-L., Raun D-L., Song W-Y., Sideris S., Chen L., Pi L-Y., Zhang S., Zhang Z., Fauquet C., Gaut B.S.et al. Xa21D encodes a receptor-like molecule with a leucine-rich repeat domain that determines race-specific recognition and is subject to adaptive evolution. Plant Cell. 10:1998;765-779.
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(1998)
Plant Cell
, vol.10
, pp. 765-779
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Wang, G.-L.1
Raun, D.-L.2
Song, W.-Y.3
Sideris, S.4
Chen, L.5
Pi, L.-Y.6
Zhang, S.7
Zhang, Z.8
Fauquet, C.9
Gaut, B.S.10
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14
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0033458799
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Toll-like receptor-2 mediates mycobacteria-induced proinflammatory signaling in macrophages
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Underhill D.M., Ozinsky A., Smith K.D., Aderen A. Toll-like receptor-2 mediates mycobacteria-induced proinflammatory signaling in macrophages. Proc Natl Acad Sci USA. 96:1999;14459-14463.
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(1999)
Proc Natl Acad Sci USA
, vol.96
, pp. 14459-14463
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Underhill, D.M.1
Ozinsky, A.2
Smith, K.D.3
Aderen, A.4
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15
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0033564813
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Constitutively active Pto induces a Prf-dependent hypersensitive response in the absence of avrPto
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The most thorough mutational analysis reported so far for an R gene. Mutant forms of Pto were tested in a yeast two-hybrid system for avr-Pto encoded protein interaction and in a transient assay system in plants for their ability to induce HR, either dependently or independently of the avr protein. Several mutants that were constitutive for HR (i.e. no avr gene product required to induce HR) were isolated among mutants in the P+1 region, which is conserved in genes encoding protein kinases. The use of these sorts of constitutive resistance mutants for pathogen-inducible expression and synthetic resistance is discussed
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Rathjen J.P., Chang J.H., Staskawicz B.J., Michelmore R.W. Constitutively active Pto induces a Prf-dependent hypersensitive response in the absence of avrPto. EMBO J. 18:1999;3232-3240. The most thorough mutational analysis reported so far for an R gene. Mutant forms of Pto were tested in a yeast two-hybrid system for avr-Pto encoded protein interaction and in a transient assay system in plants for their ability to induce HR, either dependently or independently of the avr protein. Several mutants that were constitutive for HR (i.e. no avr gene product required to induce HR) were isolated among mutants in the P+1 region, which is conserved in genes encoding protein kinases. The use of these sorts of constitutive resistance mutants for pathogen-inducible expression and synthetic resistance is discussed.
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(1999)
EMBO J
, vol.18
, pp. 3232-3240
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Rathjen, J.P.1
Chang, J.H.2
Staskawicz, B.J.3
Michelmore, R.W.4
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16
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0033101488
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Identification of regions in alleles of the flax rust resistance gene L that determine differences in gene-for-gene specificity
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DNA sequence variation between alleles at the L rust-resistance locus of flax, and amino-acid sequence variation between their products, is described. Ten of the eleven alleles express different rust resistance specificities, providing an unprecedented opportunity to investigate the basis of specificity differences between alleles. The greatest variation is found in the LRR sequence and most, but not all, of the variation is associated with the predicted solvent exposed xxLxLxx motifs. Evidence was found for specificity differences caused by either TIR- or LRR-region polymorphisms. Chimeric L alleles, constructed in vitro and tested in transgenic plants, also provided evidence for the involvement of the LRR region in specificity determination. Several of these chimeras, particularly those with exchanges in the LRR region, no longer express the resistance specificities of the parental alleles and are either non-functional or express novel specificities that are undetected by the rust
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Ellis J.G., Lawrence G.J., Luck J.E., Dodds P.N. Identification of regions in alleles of the flax rust resistance gene L that determine differences in gene-for-gene specificity. Plant Cell. 11:1999;495-506. DNA sequence variation between alleles at the L rust-resistance locus of flax, and amino-acid sequence variation between their products, is described. Ten of the eleven alleles express different rust resistance specificities, providing an unprecedented opportunity to investigate the basis of specificity differences between alleles. The greatest variation is found in the LRR sequence and most, but not all, of the variation is associated with the predicted solvent exposed xxLxLxx motifs. Evidence was found for specificity differences caused by either TIR- or LRR-region polymorphisms. Chimeric L alleles, constructed in vitro and tested in transgenic plants, also provided evidence for the involvement of the LRR region in specificity determination. Several of these chimeras, particularly those with exchanges in the LRR region, no longer express the resistance specificities of the parental alleles and are either non-functional or express novel specificities that are undetected by the rust strains used in resistance tests. One chimeric gene with the TIR and most of the NBS from L2 and the LRR from L10 did express a novel specificity, providing resistance to only one of five rusts recognised by L10.
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(1999)
Plant Cell
, vol.11
, pp. 495-506
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Ellis, J.G.1
Lawrence, G.J.2
Luck, J.E.3
Dodds, P.N.4
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17
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0031469143
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Novel disease resistance specificities result from sequence exchange between tandemly repeated genes at the Cf-4/9 locus of tomato
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Parniske M., Hammond-Kosack K.E., Golstein C., Thomas C.M., Jones D.A., Harrison K., Wulff B.B.H., Jones J.D.G. Novel disease resistance specificities result from sequence exchange between tandemly repeated genes at the Cf-4/9 locus of tomato. Cell. 91:1997;821-832.
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(1997)
Cell
, vol.91
, pp. 821-832
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Parniske, M.1
Hammond-Kosack, K.E.2
Golstein, C.3
Thomas, C.M.4
Jones, D.A.5
Harrison, K.6
Wulff, B.B.H.7
Jones, J.D.G.8
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18
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0002963645
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Genetic analysis and evolution of plant disease resistance genes
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M. Dickinson, & J. Beynon. Sheffield: Sheffield Academic Press. in press
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Dodds P.N., Lawrence G., Pryor T., Ellis J. Genetic analysis and evolution of plant disease resistance genes. Dickinson M., Beynon J. Molecular Plant Pathology. 2000;Sheffield Academic Press, Sheffield. in press.
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(2000)
Molecular Plant Pathology
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Dodds, P.N.1
Lawrence, G.2
Pryor, T.3
Ellis, J.4
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19
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0032204563
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Receptor-like genes in the major resistance locus of lettuce are subject to divergent selection
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Meyers B.C., Shen K.A., Rohani P., Gaut B.S., Michelmore R.W. Receptor-like genes in the major resistance locus of lettuce are subject to divergent selection. Plant Cell. 10:1998;1833-1846.
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(1998)
Plant Cell
, vol.10
, pp. 1833-1846
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Meyers, B.C.1
Shen, K.A.2
Rohani, P.3
Gaut, B.S.4
Michelmore, R.W.5
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20
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0032202153
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Three genes of the Arabidopsis RPP1 complex resistance locus recognize distinct Peronospora parasitica avirulence determinants
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Botella M.A., Parker J.E., Frost L.N., Bittner-Eddy P.D., Beynon J.L., Daniels M.J., Holub E.B., Jones J.D.G. Three genes of the Arabidopsis RPP1 complex resistance locus recognize distinct Peronospora parasitica avirulence determinants. Plant Cell. 10:1998;1847-1860.
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(1998)
Plant Cell
, vol.10
, pp. 1847-1860
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Botella, M.A.1
Parker, J.E.2
Frost, L.N.3
Bittner-Eddy, P.D.4
Beynon, J.L.5
Daniels, M.J.6
Holub, E.B.7
Jones, J.D.G.8
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21
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0032205839
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The tomato Cf-5 disease resistance gene and six homologs show pronounced allelic variation in leucine-rich repeat copy number
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Dixon M.S., Hatzixanthis K., Jones D.A., Harrison K., Jones J.D. The tomato Cf-5 disease resistance gene and six homologs show pronounced allelic variation in leucine-rich repeat copy number. Plant Cell. 10:1998;1915-1925.
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(1998)
Plant Cell
, vol.10
, pp. 1915-1925
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Dixon, M.S.1
Hatzixanthis, K.2
Jones, D.A.3
Harrison, K.4
Jones, J.D.5
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22
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0031412063
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Characterisation of the tomato Cf-4 gene for resistance to Cladosporium fulvum identifies sequences that determine recognitional specificity in Cf-4 and Cf-9
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Thomas C.M., Jones D.A., Parniske M., Harrison K., Balint-Kurti P., Hatzixanthis K., Jones J.D.G. Characterisation of the tomato Cf-4 gene for resistance to Cladosporium fulvum identifies sequences that determine recognitional specificity in Cf-4 and Cf-9. Plant Cell. 9:1997;2209-2224.
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(1997)
Plant Cell
, vol.9
, pp. 2209-2224
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Thomas, C.M.1
Jones, D.A.2
Parniske, M.3
Harrison, K.4
Balint-Kurti, P.5
Hatzixanthis, K.6
Jones, J.D.G.7
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23
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0031127301
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Inactivation of the flax rust resistance gene M associated with loss of a repeated unit within the leucine-rich repeat coding region
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Anderson P.A., Lawrence G.J., Morrish B.C., Ayliffe M.A., Finnegan E.J., Ellis J.G. Inactivation of the flax rust resistance gene M associated with loss of a repeated unit within the leucine-rich repeat coding region. Plant Cell. 9:1997;641-651.
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(1997)
Plant Cell
, vol.9
, pp. 641-651
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Anderson, P.A.1
Lawrence, G.J.2
Morrish, B.C.3
Ayliffe, M.A.4
Finnegan, E.J.5
Ellis, J.G.6
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24
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15644377399
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The Arabidopsis downy mildew resistance gene RPP5 shares similarity to the toll and interleukin-1 receptors with N and L6
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Parker J.E., Coleman M.J., Szabo V., Frost L.N., Schmidt R., van der Biezen E.A., Moores T., Dean C., Daniels M.J., Jones J.D.G. The Arabidopsis downy mildew resistance gene RPP5 shares similarity to the toll and interleukin-1 receptors with N and L6. Plant Cell. 9:1997;879-894.
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(1997)
Plant Cell
, vol.9
, pp. 879-894
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Parker, J.E.1
Coleman, M.J.2
Szabo, V.3
Frost, L.N.4
Schmidt, R.5
Van Der Biezen, E.A.6
Moores, T.7
Dean, C.8
Daniels, M.J.9
Jones, J.D.G.10
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25
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0032415864
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Clusters of resistance genes in plants evolve by divergent selection and a birth-and-death process
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Michelmore R.W., Meyers B.C. Clusters of resistance genes in plants evolve by divergent selection and a birth-and-death process. Genome Res. 8:1998;1113-1130.
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(1998)
Genome Res
, vol.8
, pp. 1113-1130
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Michelmore, R.W.1
Meyers, B.C.2
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26
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0033545987
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Recombination between diverged clusters of the tomato Cf-9 plant disease resistance gene family
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The authors continue the analysis of sequences related to the Cf4/9 genes that occur at three loci on chromosome 1 of tomato and document a potential inter-locus gene transfer event. This finding raises the possibility that promiscuous 'sequence sampling' between different R-gene loci is involved in R-gene evolution. For example, is there transfer of information (ectopic recombination) between the closely related but unlinked L and M loci in flax? This paper provides useful and thoughtful discussion of these matters
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Parniske M., Jones J.D. Recombination between diverged clusters of the tomato Cf-9 plant disease resistance gene family. Proc Natl Acad Sci USA. 96:1999;5850-5855. The authors continue the analysis of sequences related to the Cf4/9 genes that occur at three loci on chromosome 1 of tomato and document a potential inter-locus gene transfer event. This finding raises the possibility that promiscuous 'sequence sampling' between different R-gene loci is involved in R-gene evolution. For example, is there transfer of information (ectopic recombination) between the closely related but unlinked L and M loci in flax? This paper provides useful and thoughtful discussion of these matters.
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(1999)
Proc Natl Acad Sci USA
, vol.96
, pp. 5850-5855
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Parniske, M.1
Jones, J.D.2
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27
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0033524389
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Diversity and molecular evolution of the RPS2 resistance gene in Arabidopsis thaliana
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A description of allelic variation at the Rps2 locus in a collection of Arabidopsis thaliana ecotypes
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Caicedo A.L., Schaal B.A., Kunkel B.N. Diversity and molecular evolution of the RPS2 resistance gene in Arabidopsis thaliana. Proc Natl Acad Sci USA. 96:1999;302-306. A description of allelic variation at the Rps2 locus in a collection of Arabidopsis thaliana ecotypes.
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(1999)
Proc Natl Acad Sci USA
, vol.96
, pp. 302-306
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Caicedo, A.L.1
Schaal, B.A.2
Kunkel, B.N.3
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28
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0033549777
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Dynamics of disease resistance polymorphism at the Rpm1 locus of Arabidopsis
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A description of variation flanking the Rpm1 locus of Arabidopsis. The earlier observation that susceptible strains carry the same deletion of the complete Rpm1 gene is extended to 27 ecotypes
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