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Registros recuperados: 16
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A century of wheat breeding in Brazil: the origin and inheritance of the Lr34 locus in wheat varieties released from 1922 to 2016. Repositório Alice
CHAVES, M. S.; SILVA, G. B. da; CAIERAO, E.; FEDERIZZI, L. C.; MARTINELLI, J. A..
Abstract: Wheat breeding in Brazil began in 1919. A cross between the varieties Fronteira and Mentana gave rise to Frontana, the most popular ever released, being recommended for more than 40 years. Frontana played an important role as a source of resistance to leaf and stripe rust as well as resistance to preharvest sprouting. Possessing an early maturity cycle, it contributed to change the predominant varietal pattern at that time. The resistance gene Lr34 was first described in Frontana. The gene confers durable adult plant resistance to leaf rust and other biotrophic fungi. Because of its durability, stability across environments, haplotype diversity and wide geographical distribution, Lr34 is probably the most important single resistance gene in...
Tipo: Artigo de periódico Palavras-chave: Diagnostic molecular markers; Adult plant resistance; KASPar; Leaf rust.
Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1122054
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A century of wheat breeding in Brazil: the origin and inheritance of the Lr34 locus in wheat varieties released from 1922 to 2016. Repositório Alice
CHAVES, M. S.; SILVA, G. B. da; CAIERAO, E.; FEDERIZZI, L. C.; MARTINELLI, J. A..
Abstract: Wheat breeding in Brazil began in 1919. A cross between the varieties Fronteira and Mentana gave rise to Frontana, the most popular ever released, being recommended for more than 40 years. Frontana played an important role as a source of resistance to leaf and stripe rust as well as resistance to preharvest sprouting. Possessing an early maturity cycle, it contributed to change the predominant varietal pattern at that time. The resistance gene Lr34 was first described in Frontana. The gene confers durable adult plant resistance to leaf rust and other biotrophic fungi. Because of its durability, stability across environments, haplotype diversity and wide geographical distribution, Lr34 is probably the most important single resistance gene in...
Tipo: Artigo de periódico Palavras-chave: Diagnostic molecular markers; Adult plant resistance; KASPar; Leaf rust.
Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1121808
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An overview of physiological specialization of coffee leaf rust: new designation of pathotypes. Repositório Alice
ZAMBOLIM, l.; CAIXETA, E. T..
Coffee leaf rust is the most important disease thorought the world. The disease caused by a biotrofic fungi growing areas of the world coffee leaf rust causes losses from Central American coffee park. identified in 1860. Madagascar and Java). I the disease was identified in Brazil. America, Caribean and Mexico. Currently, more than 50 identified by using coffee differentials clones of CIFC in the world. The most comum and widespread resistance genes ( identified by the differential interaction of genes of the host and of the pathogen. M technique, found two different genes in HdT 832/1 and HdT 832/2 not yet identified in differential clones ( to refer the isolates of system. Several pathotypes was found in several countri based on a set of differentials of...
Tipo: Artigo de periódico Palavras-chave: Hemileia Vastatrix; Leaf rust; Coffea; Pathotypes.
Ano: 2021 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1139326
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Brazilian spring wheat germplasm as source of genetic variability. Repositório Alice
ROSA, S.; LANGILLE, L.; HUMPHREYS, G.; MCCALLUM, B.; FETCH, T.; RANDHAWA, H.; HENRIQUEZ, M. A.; VOLDENG, H.; CUMMISKEY, A.; BLACKWELL, B.; SCHEEREN, P. L.; VALERIO, I.; TURRA, C..
As part of a Canada-Brazil germplasm exchange, 106 modern and ancient Brazilian spring wheat cultivars have been genotyped and phenotypically evaluated in Canada since 2014
Tipo: Anais e Proceedings de eventos Palavras-chave: Wheat cultivars; Wheat germplasm; Germplasm; Leaf rust; Wheat; Spring wheat.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1121179
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Doenças em eucalipto no Acre. Infoteca-e
SIVIERO, A.; ROWEDER, C.; MACEDO, P. E. F. de; FURTADO, E. L..
O conhecimento dos principais patógenos do eucalipto, os danos e os prejuízos causados pelas doenças na região Amazônica podem definir o melhor genótipo para uma determinada região. Atualmente há uma lacuna no conhecimento acerca das doenças do eucalipto no Acre. Dessa forma, é importante a realização de estudos sobre a ocorrência de doenças e o impacto causado pelos patógenos em povoamentos de eucalipto recentemente instalados no Acre auxiliando programas de pesquisa, agrossilvicultores e a formulação de políticas públicas, que visem incentivar a produção e a produtividade de madeira no Acre. Esta publicação teve como objetivo geral estudar as principais doenças em plantas de eucalipto no Acre e está de acordo com os Objetivos de Desenvolvimento...
Tipo: Circular Técnica (INFOTECA-E) Palavras-chave: Enfermedades y desórdenes de las plantas; Marchitez bacteriana; Xanthomonas axonopis pv eucalypti; Roya de la hoja; Mancha de coniela; Coniella fragariae; Embrapa acre; Fazenda Bela Vista; Rio Branco (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Eucalipto; Eucalyptus spp; Doença de Planta; Murcha Bacteriana; Ralstonia Solanacearum; Mancha Bacteriana; Mancha Zonada; Mancha Foliar; Ferrugem; Puccinia Psidii; Campo Experimental; Plant diseases and disorders; Bacterial wilt; Leaf spot; Cylindrocladium pteridis; Leaf rust.
Ano: 2019 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1115889
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Effects of UV-B radiation on Lecanicillium spp., biological control agents of the coffee leaf rust pathogen. Repositório Alice
GALVAO, J. A. H.; BETTIOL, W..
Coffee leaf rust is the main disease of coffee and its causal agent is naturally hyperparasited by Lecanicillium lecanii, indicating its potential for biocontrol. Ultraviolet-B (UV-B) radiation is an important factor that interferes on application of biocontrol agents, and Lecanicillium can be affected by UV-B. The objective of this work was to evaluate the effects of UV-B on Lecanicillium isolates and on its capacity to colonize rust lesions. There were variations among Lecanicillium strains in sensitivity to UV-B radiation, causing inactivation and delayed spore germination. The most tolerant strain (CCMA-1143) had LD50=1.63 kJ/m2 of UV-B. The incidence and colonization of Lecanicillium on coffee leaf rust lesions were influenced by the dose of UV-B...
Tipo: Separatas Palavras-chave: UV-B; Coffee.; Hemileia vastatrix; Ferrugem; Café; Controle biológico; Climate change; Biopesticides; Ultraviolet radiation; Leaf rust; Biological control; Lecanicillium..
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1003378
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Genetic characterization of leaf and stripe rust resistance in the Brazilian wheat cultivar toropi. Repositório Alice
ROSA, S. B.; ZANELLA, C. M.; HIEBERT, C. W.; BRULE-BABEL, A. L.; RANDHAWA, H. S.; SHORTER, S.; BOYD, L. A.; MCCALLUM, B. D.; BRAMMER, S. P..
Leaf and stripe rust are major threats to wheat production worldwide. The effective, multiple rust resistances present in the Brazilian cultivar Toropi makes it an excellent choice for a genetic study of rust resistance. Testing of DNA from different seed lots of Toropi with 2,194 polymorphic 90K iSelect single nucleotide polymorphism markers identified significant genetic divergence, with as much as 35% dissimilarity between seed lots. As a result, further work was conducted with a single plant line derived from Toropi variant Toropi-6.4. A double haploid population with 168 lines derived from the cross Toropi-6.4 × Thatcher was phenotyped over multiple years and locations in Canada, New Zealand, and Kenya, with a total of seven field trials undertaken...
Tipo: Artigo de periódico Palavras-chave: Adult plant resistance; Durable resistance; QTL; Leaf rust; Stripe rust; Wheat.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1137644
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Genome sequencing and transcript analysis of Hemileia vastatrix reveal expression dynamics of candidate effectors dependent on host compatibility. Repositório Alice
PORTO, B. N.; CAIXETA, E. T.; MATHIONI, S. M.; VIDIGAL, P. M. P.; ZAMBOLIM, L.; ZAMBOLIM, E. M.; DONOFRIO, N.; POLSON, S. W.; MAIA, T. A.; CHEN, C.; ADETUNJI, M.; KINGHAM, B.; DALIO, R. J. D.; RESENDE, M. L. V. de.
Coffee leaf rust caused by the fungus Hemileia vastatrix is one of the most important leaf diseases of coffee plantations worldwide. Current knowledge of the H. vastatrix genome is limited and only a small fraction of the total fungal secretome has been identified. In order to obtain a more comprehensive understanding of its secretome, we aimed to sequence and assemble the entire H. vastatrix genome using two next-generation sequencing platforms and a hybrid assembly strategy. This resulted in a 547 Mb genome of H. vastatrix race XXXIII (Hv33), with 13,364 predicted genes that encode 13,034 putative proteins with transcriptomic support. Based on this proteome, 615 proteins contain putative secretion peptides, and lack transmembrane domains. From this...
Tipo: Artigo de periódico Palavras-chave: Hemileia Vastatrix; Fungo; Ferrugem; Genome; Leaf rust; Infection.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1113216
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Glutenin analysis for the safe screening of self-pollinated wheat seeds when developing doubled-haploid populations PAB
Torres,Gisele Abigail Montan; Scagliusi,Sandra Maria Mansur; Chaves,Márcia Soares; Consoli,Luciano.
Abstract: The objective of this work was to apply glutenin analysis, as a simple and reliable method, to identify self-pollinated wheat (Triticum aestivum) seeds in F1 crosses, when developing mapping populations using doubled-haploid (DH) technology. F1 seeds were subjected to glutenin analyses using gel electrophoresis, to verify and confirm their heterozygotic profiles. Glutenin analyses were carried out using one half of the endosperm of each of the 87 F1 seeds. The other half of the endosperm was used to develop the mapping population through DHs. Plants with band patterns different from the expected ones were discarded. Although the incidence of self-pollinated seeds was relatively low (only 8%), the screening of F1 heterozygotic profiles is...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Puccinia recondita f. sp. tritici; Triticum aestivum; Adult plant resistance; Leaf rust; Microspore culture; Toropi wheat cultivar.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000500646
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Identification of microsatellites linked to Lr47 Electron. J. Biotechnol.
Vanzetti,Leonardo Sebastián; Brevis,Juan Carlos; Dubcovsky,Jorge; Helguera,Marcelo.
Leaf rust resistance gene Lr47 is located within a interstitial segment of Triticum speltoides Taush. 7S chromosome translocated to the short arm of chromosome 7A of bread wheat. This gene is resistant against currently predominant races of leaf rust from Argentina. The objectives of this study were to identify microsatellites linked to this source of resistance as a potential tool to introgress this source of resistance. Isogenic lines with and without Lr47 developed from 10 cultivars/breeding lines as well as 10 microsatellites previously mapped in 7AS chromosome were used in this study. Microsatellite gwm 60 was the only marker that co-segregated completely linked to Lr47. These data indicate that gwm 60 could be a valuable marker to introgress Lr47 in...
Tipo: Journal article Palavras-chave: Gwm 60; Leaf rust; Marker assisted selection; Puccinia triticina Ericks.; Triticum aestivum.
Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000300018
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Inheritance study and linkage mapping of resistance loci to Hemileia vastatrix in Híbrido de Timor UFV 443-03. Repositório Alice
PESTANA, K. N.; CAPUCHO, A. S.; CAIXETA, E. T.; ALMEIDA, D. P. de; ZAMBOLIM, E. M.; CRUZ, C. D.; ZAMBOLIM, L.; PEREIRA, A. A.; OLIVEIRA, A. C. B. de; SAKIYAMA, N. S..
Coffee leaf rust (CLR) caused by Hemileia vastatrix Berk. et Br. is one of the major Coffea arabica diseases world-wide. CLR resistance has been attributed to at least nine dominant genes, as single or in combination. We present an inheritance study and mapping loci involved in the Híbrido de Timor (HDT) UFV 443-03 resistance to race I, race II, and pathotype 001 of H. vastatrix . Molecular markers were used to ascertain the phenotypic results and to map the putative resistance loci. For all tree isolates, the inheritance study indicated that the resistance of HDT UFV 443-03 is conditioned by two independent dominant loci or by three independent loci (two dominant and one recessive). Molecular marker analyses ascertained that the resistance of HDT UFV...
Tipo: Artigo de periódico Palavras-chave: Leaf rust; Breeding; Chromosome mapping; Quantitative trait loci.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1039824
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Novel source od resistances to leaf, stripe and stem rust in the Brazilian wheat cultivar Toropi. Repositório Alice
ROSA, S.; ZANELLA, C. M.; HIEBERT, C. W.; FETCH, T.; BRULE-BABEL, A. L.; RANDHAWA, H. S.; SHORTER, S.; BRAMMER, S. P.; BOYD, L.; McCALLLUM, B. D..
Tipo: Anais e Proceedings de eventos Palavras-chave: Trigo; Resistência Genética; Doença de Planta; Ferrugem; Wheat; Genetic resistance; Plant diseases and disorders; Leaf rust.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1115086
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Receptor-Like Kinase (RLK) as a candidate gene conferring resistance to Hemileia vastatrix in coffee. Repositório Alice
ALMEIDA, D. P. de; CASTRO, I. S. L.; MENDES, T. A. de O.; ALVES, D. R.; BARKA, G. D.; BARREIROS, P. R. R. M.; ZAMBOLIM, L.; SAKIYAMA, N. S.; CAIXETA, E. T..
The biotrophic fungus Hemileia vastatrix causes coffee leaf rust (CLR), one of the most devastating diseases in Coffea arabica . Coffee, like other plants, has developed effective mechanisms to recognize and respond to infections caused by pathogens. Plant resistance gene analogs (RGAs) have been identified in certain plants as candidates for resistance ( R ) genes or membrane receptors that activate the R genes. The RGAs identified in different plants possess conserved domains that play specific roles in the fight against pathogens. Despite the importance of RGAs, in coffee plants these genes and other molecular mechanisms of disease resistance are still unknown. This study aimed to sequence and characterize candidate genes from coffee plants with the...
Tipo: Artigo de periódico Palavras-chave: Receptor-Like Kinase; Hemileia Vastatrix; Hemileia; Leaf rust; Plant diseases and disorders; Coffea arabica var. arabica; Clones; Plant breeding.
Ano: 2021 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1139319
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Screening of different corn germ plasms against leaf rust disease under Kakani conditions Thai Agricultural
Manandhar, K.L.; Shah, S. Moin.
Palavras-chave: Corn; Maize; Germplasm; Leaf rust; Puccinia; Screening; Disease resistance; ข้าวโพด; เชื้อพันธุกรรม; โรคราสนิม.
Ano: 1972 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3905
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Transcriptome analysis in the wheat cultivar Toropi in response to infection with Puccinia triticina, the causal pathogen on leaf rust. Repositório Alice
ZANELLA, C. M.; EREFUL, N.; CASASSOLA, A.; BRAMMER, S. P.; CHAVES, M. S.; CAVERZAN, A.; MARTINELLI, J. A.; BOYD, L..
Tipo: Anais e Proceedings de eventos Palavras-chave: Trigo; Resistência Genética; Ferrugem; Doença de Planta; Wheat; Genetic resistance; Plant diseases and disorders; Leaf rust.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1115085
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Wheat transcriptome analysis targeting leaf rust resistance-related genes. Repositório Alice
CASASSOLA, A.; BRAMMER, S. P.; CHAVES, M. S.; NHANI JUNIOR, A.; KUSER-FALCÃO, P. R.; ZERLOTINI, A.; STEFANATO, F.; BOYD, L..
ISCB-Latin America 2014. Pôster D03.
Tipo: Anais e Proceedings de eventos Palavras-chave: Bioinformática; Doença de planta; Leaf rust; Bioinformatics.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1007511
Registros recuperados: 16
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