Base de dados : MEDLINE
Pesquisa : G12.450.800 [Categoria DeCS]
Referências encontradas : 1468 [refinar]
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[PMID]:29272270
[Au] Autor:Badet T; Voisin D; Mbengue M; Barascud M; Sucher J; Sadon P; Balagué C; Roby D; Raffaele S
[Ad] Endereço:LIPM, Université de Toulouse, INRA, CNRS, Castanet-Tolosan, France.
[Ti] Título:Parallel evolution of the POQR prolyl oligo peptidase gene conferring plant quantitative disease resistance.
[So] Source:PLoS Genet;13(12):e1007143, 2017 12.
[Is] ISSN:1553-7404
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Plant pathogens with a broad host range are able to infect plant lineages that diverged over 100 million years ago. They exert similar and recurring constraints on the evolution of unrelated plant populations. Plants generally respond with quantitative disease resistance (QDR), a form of immunity relying on complex genetic determinants. In most cases, the molecular determinants of QDR and how they evolve is unknown. Here we identify in Arabidopsis thaliana a gene mediating QDR against Sclerotinia sclerotiorum, agent of the white mold disease, and provide evidence of its convergent evolution in multiple plant species. Using genome wide association mapping in A. thaliana, we associated the gene encoding the POQR prolyl-oligopeptidase with QDR against S. sclerotiorum. Loss of this gene compromised QDR against S. sclerotiorum but not against a bacterial pathogen. Natural diversity analysis associated POQR sequence with QDR. Remarkably, the same amino acid changes occurred after independent duplications of POQR in ancestors of multiple plant species, including A. thaliana and tomato. Genome-scale expression analyses revealed that parallel divergence in gene expression upon S. sclerotiorum infection is a frequent pattern in genes, such as POQR, that duplicated both in A. thaliana and tomato. Our study identifies a previously uncharacterized gene mediating QDR against S. sclerotiorum. It shows that some QDR determinants are conserved in distantly related plants and have emerged through the repeated use of similar genetic polymorphisms at different evolutionary time scales.
[Mh] Termos MeSH primário: Resistência à Doença/genética
Serina Endopeptidases/genética
[Mh] Termos MeSH secundário: Arabidopsis/genética
Ascomicetos/genética
Ascomicetos/patogenicidade
Mapeamento Cromossômico
Regulação da Expressão Gênica de Plantas
Estudo de Associação Genômica Ampla
Doenças das Plantas/genética
Imunidade Vegetal/genética
Proteínas de Plantas/genética
Serina Endopeptidases/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Plant Proteins); EC 3.4.21.- (Serine Endopeptidases); EC 3.4.21.26 (prolyl oligopeptidase)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180227
[Lr] Data última revisão:
180227
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171223
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pgen.1007143


  2 / 1468 MEDLINE  
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[PMID]:29374171
[Au] Autor:Rapicavoli JN; Blanco-Ulate B; Muszynski A; Figueroa-Balderas R; Morales-Cruz A; Azadi P; Dobruchowska JM; Castro C; Cantu D; Roper MC
[Ad] Endereço:Department of Microbiology and Plant Pathology, University of California, Riverside, CA, 92521, USA.
[Ti] Título:Lipopolysaccharide O-antigen delays plant innate immune recognition of Xylella fastidiosa.
[So] Source:Nat Commun;9(1):390, 2018 01 26.
[Is] ISSN:2041-1723
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Lipopolysaccharides (LPS) are among the known pathogen-associated molecular patterns (PAMPs). LPSs are potent elicitors of PAMP-triggered immunity (PTI), and bacteria have evolved intricate mechanisms to dampen PTI. Here we demonstrate that Xylella fastidiosa (Xf), a hemibiotrophic plant pathogenic bacterium, possesses a long chain O-antigen that enables it to delay initial plant recognition, thereby allowing it to effectively skirt initial elicitation of innate immunity and establish itself in the host. Lack of the O-antigen modifies plant perception of Xf and enables elicitation of hallmarks of PTI, such as ROS production specifically in the plant xylem tissue compartment, a tissue not traditionally considered a spatial location of PTI. To explore translational applications of our findings, we demonstrate that pre-treatment of plants with Xf LPS primes grapevine defenses to confer tolerance to Xf challenge.
[Mh] Termos MeSH primário: Imunidade Inata/imunologia
Lipopolissacarídeos/imunologia
Antígenos O/imunologia
Doenças das Plantas/imunologia
Imunidade Vegetal/imunologia
Xylella/imunologia
[Mh] Termos MeSH secundário: Perfilação da Expressão Gênica
Regulação da Expressão Gênica de Plantas/imunologia
Interações Hospedeiro-Patógeno/imunologia
Imunidade Inata/genética
Lipopolissacarídeos/metabolismo
Antígenos O/metabolismo
Doenças das Plantas/genética
Doenças das Plantas/microbiologia
Imunidade Vegetal/genética
Vitis/genética
Vitis/imunologia
Vitis/microbiologia
Xylella/metabolismo
Xylella/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
[Nm] Nome de substância:
0 (Lipopolysaccharides); 0 (O Antigens)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180226
[Lr] Data última revisão:
180226
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180128
[St] Status:MEDLINE
[do] DOI:10.1038/s41467-018-02861-5


  3 / 1468 MEDLINE  
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[PMID]:28458047
[Au] Autor:Yasuda S; Okada K; Saijo Y
[Ad] Endereço:Graduate School of Biological Sciences, Nara Institute of Science and Technology, Ikoma 630-0192, Japan.
[Ti] Título:A look at plant immunity through the window of the multitasking coreceptor BAK1.
[So] Source:Curr Opin Plant Biol;38:10-18, 2017 08.
[Is] ISSN:1879-0356
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Recognition of microbe- and danger-associated molecular patterns (MAMPs and DAMPs, respectively) by pattern recognition receptors (PRRs) is central to innate immunity in both plants and animals. The plant PRRs described to date are all cell surface-localized receptors. According to their ligand-binding ectodomains, each PRR engages a specific coreceptor or adaptor kinase in its signaling complexes to regulate defense signaling. With a focus on the coreceptor RLK BRI1-ASSOCIATED RECEPTOR KINASE1 (BAK1) and related SOMATIC EMBRYOGENESIS RECEPTOR KINASEs (SERKs), here we review the increasing inventory of BAK1 partners and their functions in plant immunity. We also discuss the significance of autoimmunity triggered by BAK1/SERK4 disintegration in shaping the strategies for attenuation of PRR signaling by infectious microbes and host plants.
[Mh] Termos MeSH primário: Proteínas de Arabidopsis/imunologia
Proteínas de Arabidopsis/metabolismo
Arabidopsis/imunologia
[Mh] Termos MeSH secundário: Arabidopsis/metabolismo
Proteínas de Arabidopsis/genética
Imunidade Vegetal/genética
Imunidade Vegetal/fisiologia
Proteínas Serina-Treonina Quinases/genética
Proteínas Serina-Treonina Quinases/metabolismo
Receptores de Reconhecimento de Padrão/genética
Receptores de Reconhecimento de Padrão/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Arabidopsis Proteins); 0 (Receptors, Pattern Recognition); EC 2.7.1.- (BAK1 protein, Arabidopsis); EC 2.7.11.1 (Protein-Serine-Threonine Kinases)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180222
[Lr] Data última revisão:
180222
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170502
[St] Status:MEDLINE


  4 / 1468 MEDLINE  
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[PMID]:28458046
[Au] Autor:Birkenbihl RP; Liu S; Somssich IE
[Ad] Endereço:Department of Plant Microbe Interactions, Max Planck Institute for Plant Breeding Research, Carl-von-Linné Weg 10, 50829 Koeln, Germany. Electronic address: birkenbi@mpiz-koeln.mpg.de.
[Ti] Título:Transcriptional events defining plant immune responses.
[So] Source:Curr Opin Plant Biol;38:1-9, 2017 08.
[Is] ISSN:1879-0356
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Rapid and massive transcriptional reprogramming upon pathogen recognition is the decisive step in plant-phytopathogen interactions. Plant transcription factors (TFs) are key players in this process but they require a suite of other context-specific co-regulators to establish sensory transcription regulatory networks to bring about host immunity. Molecular, genetic and biochemical studies, particularly in the model plants Arabidopsis and rice, are continuously uncovering new components of the transcriptional machinery that can selectively impact host resistance toward a diverse range of pathogens. Moreover, detailed studies on key immune regulators, such as WRKY TFs and NPR1, are beginning to reveal the underlying mechanisms by which defense hormones influence the function of these factors. Here we provide a short update on such recent developments.
[Mh] Termos MeSH primário: Arabidopsis/imunologia
Arabidopsis/metabolismo
Proteínas de Plantas/metabolismo
Fatores de Transcrição/metabolismo
[Mh] Termos MeSH secundário: Arabidopsis/genética
Regulação da Expressão Gênica de Plantas/genética
Regulação da Expressão Gênica de Plantas/fisiologia
Imunidade Vegetal/genética
Imunidade Vegetal/fisiologia
Proteínas de Plantas/genética
Fatores de Transcrição/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Plant Proteins); 0 (Transcription Factors)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180222
[Lr] Data última revisão:
180222
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170502
[St] Status:MEDLINE


  5 / 1468 MEDLINE  
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[PMID]:29209811
[Au] Autor:Panno S; Caruso AG; Davino S
[Ad] Endereço:Department of Agricultural, Food and Forest science, University of Palermo, Viale delle Scienze, bld 5, 90128, Palermo, Italy.
[Ti] Título:The nucleotide sequence of a recombinant tomato yellow leaf curl virus strain frequently detected in Sicily isolated from tomato plants carrying the Ty-1 resistance gene.
[So] Source:Arch Virol;163(3):795-797, 2018 Mar.
[Is] ISSN:1432-8798
[Cp] País de publicação:Austria
[La] Idioma:eng
[Ab] Resumo:In July 2016, an aggressive syndrome of tomato yellow leaf curl disease was reported in Sicily in tomato plants carrying the Ty-1 resistance gene. A total of 34 samples were collected and analyzed. Twenty-seven out of the 34 samples analyzed appeared to contain only recombinant molecules. One full sequence was obtained after cloning. Alignments and plot similarity analysis showed that the genome of the recombinant, named TYLCV-IL[IT:Sic23:16], was mostly derived from tomato yellow leaf curl virus (TYLCV), with a small region of 132 nucleotides in the non-coding region between the stem-loop and the start of the V2 ORF replaced by 124 nucleotides derived from a virus of a different species, tomato yellow leaf curl Sardinia virus. All plants in which the new recombinant was detected belonged to resistant tomato cultivars.
[Mh] Termos MeSH primário: Begomovirus/genética
Genes Virais/genética
Lycopersicon esculentum/virologia
Folhas de Planta/virologia
Recombinação Genética
[Mh] Termos MeSH secundário: Sequência de Bases
Begomovirus/classificação
Begomovirus/isolamento & purificação
Resistência à Doença/genética
Suscetibilidade a Doenças
Sequenciamento de Nucleotídeos em Larga Escala
Lycopersicon esculentum/genética
Lycopersicon esculentum/imunologia
Doenças das Plantas/genética
Doenças das Plantas/imunologia
Doenças das Plantas/virologia
Imunidade Vegetal/genética
Folhas de Planta/genética
Folhas de Planta/imunologia
Plantas Geneticamente Modificadas
Análise de Sequência de DNA
Sicília
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180220
[Lr] Data última revisão:
180220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171207
[St] Status:MEDLINE
[do] DOI:10.1007/s00705-017-3674-9


  6 / 1468 MEDLINE  
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[PMID]:28471263
[Au] Autor:Zhu X; Perez M; Aldon D; Galaud JP
[Ad] Endereço:a College of Horticulture, South China Agriculture University , Guangzhou , P.R. China.
[Ti] Título:Respective contribution of CML8 and CML9, two arabidopsis calmodulin-like proteins, to plant stress responses.
[So] Source:Plant Signal Behav;12(5):e1322246, 2017 May 04.
[Is] ISSN:1559-2324
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:In their natural environment, plants have to continuously face constraints such as biotic and abiotic stresses. To achieve their life cycle, plants have to perceive and interpret the nature, but also the strength of environmental stimuli to activate appropriate physiological responses. Nowadays, it is well established that signaling pathways are crucial steps in the implementation of rapid and efficient plant responses such as genetic reprogramming. It is also reported that rapid raises in calcium (Ca ) levels within plant cells participate in these early signaling steps and are essential to coordinate adaptive responses. However, to be informative, calcium increases need to be decoded and relayed by calcium-binding proteins also referred as calcium sensors to carry-out the appropriate responses. In a recent study, we showed that CML8, an Arabidopsis calcium sensor belonging to the calmodulin-like (CML) protein family, promotes plant immunity against the phytopathogenic bacteria Pseudomonas syringae pv tomato (strain DC3000). Interestingly, other CML proteins such as CML9 were also reported to contribute to plant immunity using the same pathosystem. In this addendum, we propose to discuss about the specific contribution of these 2 CMLs in stress responses.
[Mh] Termos MeSH primário: Proteínas de Arabidopsis/metabolismo
Arabidopsis/metabolismo
Arabidopsis/fisiologia
Calmodulina/metabolismo
[Mh] Termos MeSH secundário: Arabidopsis/microbiologia
Proteínas de Arabidopsis/genética
Proteínas de Ligação ao Cálcio/genética
Proteínas de Ligação ao Cálcio/metabolismo
Calmodulina/genética
Regulação da Expressão Gênica de Plantas/genética
Regulação da Expressão Gênica de Plantas/fisiologia
Imunidade Vegetal/genética
Imunidade Vegetal/fisiologia
Plantas Geneticamente Modificadas/metabolismo
Plantas Geneticamente Modificadas/microbiologia
Plantas Geneticamente Modificadas/fisiologia
Pseudomonas syringae/patogenicidade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Arabidopsis Proteins); 0 (CaM9 protein, Arabidopsis); 0 (Calcium-Binding Proteins); 0 (Calmodulin)
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171218
[Lr] Data última revisão:
171218
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170505
[St] Status:MEDLINE
[do] DOI:10.1080/15592324.2017.1322246


  7 / 1468 MEDLINE  
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[PMID]:28811287
[Au] Autor:Hatsugai N; Igarashi D; Mase K; Lu Y; Tsuda Y; Chakravarthy S; Wei HL; Foley JW; Collmer A; Glazebrook J; Katagiri F
[Ad] Endereço:Department of Plant and Microbial Biology, Microbial and Plant Genomics Institute, University of Minnesota, St. Paul, MN, USA.
[Ti] Título:A plant effector-triggered immunity signaling sector is inhibited by pattern-triggered immunity.
[So] Source:EMBO J;36(18):2758-2769, 2017 Sep 15.
[Is] ISSN:1460-2075
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Since signaling machineries for two modes of plant-induced immunity, pattern-triggered immunity (PTI) and effector-triggered immunity (ETI), extensively overlap, PTI and ETI signaling likely interact. In an quadruple mutant, in which four major sectors of the signaling network, jasmonate, ethylene, PAD4, and salicylate, are disabled, the hypersensitive response (HR) typical of ETI is abolished when the effector AvrRpt2 is bacterially delivered but is intact when AvrRpt2 is directly expressed These observations led us to discovery of a network-buffered signaling mechanism that mediates HR signaling and is strongly inhibited by PTI signaling. We named this mechanism the ETI-Mediating and PTI-Inhibited Sector (EMPIS). The signaling kinetics of EMPIS explain apparently different plant genetic requirements for ETI triggered by different effectors without postulating different signaling machineries. The properties of EMPIS suggest that information about efficacy of the early immune response is fed back to the immune signaling network, modulating its activity and limiting the fitness cost of unnecessary immune responses.
[Mh] Termos MeSH primário: Arabidopsis/imunologia
Proteínas de Bactérias/metabolismo
Imunidade Vegetal
Pseudomonas syringae/metabolismo
Transdução de Sinais
Fatores de Virulência/metabolismo
[Mh] Termos MeSH secundário: Arabidopsis/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Bacterial Proteins); 0 (Virulence Factors); 0 (avrRpt2 protein, Pseudomonas syringae)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170925
[Lr] Data última revisão:
170925
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170817
[St] Status:MEDLINE
[do] DOI:10.15252/embj.201796529


  8 / 1468 MEDLINE  
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[PMID]:28807829
[Au] Autor:Zhang Y; Liang Y; Dong Y; Gao Y; Yang X; Yuan J; Qiu D
[Ad] Endereço:The State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, No. 12 Zhong-guan-cun South Street, Beijing 100081, China.
[Ti] Título:The Magnaporthe oryzae Alt A 1-like protein MoHrip1 binds to the plant plasma membrane.
[So] Source:Biochem Biophys Res Commun;492(1):55-60, 2017 Oct 07.
[Is] ISSN:1090-2104
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:MoHrip1, a protein isolated from Magnaporthe oryzae, belongs to the Alt A 1 (AA1) family. mohrip1 mRNA levels showed inducible expression throughout the infection process in rice. To determine the location of MoHrip1 in M. oryzae, a mohrip1-gfp mutant was generated. Fluorescence microscopy observations and western blotting analysis showed that MoHrip1 was both present in the secretome and abundant in the fungal cell wall. To obtain MoHrip1 protein, we carried out high-yield expression of MoHrip1 in Pichia pastoris. Treatment of tobacco plants with MoHrip1 induced the formation of necrosis, accumulation of reactive oxygen species and expression of several defense-related genes, as well as conferred disease resistance. By fusion to green fluorescent protein, we showed that MoHrip1 was able to bind to the tobacco and rice plant plasma membrane, causing rapid morphological changes at the cellular level, such as cell shrinkage and chloroplast disorganization. These findings indicate that MoHrip1 is a microbe-associated molecular pattern that is perceived by the plant immune system. This is the first study on an AA1 family protein that can bind to the plant plasma membrane.
[Mh] Termos MeSH primário: Membrana Celular/metabolismo
Proteínas Fúngicas/metabolismo
Magnaporthe/química
Tabaco/citologia
[Mh] Termos MeSH secundário: Membrana Celular/química
Proteínas Fúngicas/biossíntese
Proteínas Fúngicas/imunologia
Proteínas Fúngicas/isolamento & purificação
Magnaporthe/imunologia
Padrões Moleculares Associados a Patógenos
Doenças das Plantas/imunologia
Doenças das Plantas/microbiologia
Imunidade Vegetal
Tabaco/imunologia
Tabaco/microbiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Fungal Proteins); 0 (Pathogen-Associated Molecular Pattern Molecules)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170925
[Lr] Data última revisão:
170925
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170816
[St] Status:MEDLINE


  9 / 1468 MEDLINE  
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[PMID]:28692118
[Au] Autor:Pereira GS; Pinho RGV; Pinho EVRV; Pires LPM; Bernardo Junior LAY; Pereira JLA; Melo MP
[Ad] Endereço:Programa de Pós-Graduação em Genética e Melhoramento de Plantas, Universidade Federal de Lavras, Lavras, MG, Brasil.
[Ti] Título:Selection of maize inbred lines and gene expression for resistance to ear rot.
[So] Source:Genet Mol Res;16(3), 2017 Jul 06.
[Is] ISSN:1676-5680
[Cp] País de publicação:Brazil
[La] Idioma:eng
[Ab] Resumo:In recent years, there has been a large incidence of fungi causing "ear rot" in maize in Brazil, the main fungus being Fusarium verticillioides. The most efficient and competitive alternative for control of this disease consists of using maize hybrids resistant to this pathogen. Thus, the aims of this study were to analyze the genetic variability of maize inbred lines in regard to resistance to ear rot to observe if there is a maternal effect to resistance to ear rot, to study genetic control of the traits evaluated in hybrids originating from inbred lines of the maize breeding program at the Agriculture Department of Universidade Federal de Lavras (Lavras, MG, Brazil), and characterize the gene expression pattern related to the plant defense mechanism against F. verticillioides. High genetic availability was observed for resistance to this disease among the inbred lines evaluated. Considering combined diallel analysis, it was observed that the mean square of general combining ability (GCA) was not significant for the characteristic under study. However, specific combining ability (SCA) was significant, which indicates the predominance of non-additive effects involved in control of the characteristic for the population evaluated. A maternal effect was not observed for the characteristic of ear rot resistance in this study. Inbred lines 22, 58, and 91 showed potential for use in breeding programs aiming at resistance to F. verticillioides. Only two genes, LOX8 and Hsp82, had a satisfactory result that was able to be related to a plant defense mechanism when there is ear rot infection, though expression of these genes was observed in only one susceptible genotype. Thus, the genes LOX8 and Hsp82 are potential molecular markers for selection of maize inbred lines resistant to F. verticillioides.
[Mh] Termos MeSH primário: Melhoramento Vegetal
Imunidade Vegetal/genética
Seleção Genética
Zea mays/genética
[Mh] Termos MeSH secundário: Fusarium/patogenicidade
Regulação da Expressão Gênica de Plantas
Marcadores Genéticos
Variação Genética
Proteínas de Choque Térmico/genética
Endogamia
Lipoxigenase/genética
Herança Materna
Proteínas de Plantas/genética
Zea mays/imunologia
Zea mays/microbiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Genetic Markers); 0 (Heat-Shock Proteins); 0 (Plant Proteins); EC 1.13.11.12 (Lipoxygenase)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171019
[Lr] Data última revisão:
171019
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170711
[St] Status:MEDLINE
[do] DOI:10.4238/gmr16039415


  10 / 1468 MEDLINE  
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[PMID]:28686731
[Au] Autor:Schaefer HL; Brandes H; Ulber B; Becker HC; Vidal S
[Ad] Endereço:Department for Crop Sciences, Division of Plant Pathology and Plant Protection, Section of Agricultural Entomology, Goettingen, Georg-August University, Germany.
[Ti] Título:Evaluation of nine genotypes of oilseed rape (Brassica napus L.) for larval infestation and performance of rape stem weevil (Ceutorhynchus napi Gyll.).
[So] Source:PLoS One;12(7):e0180807, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The rape stem weevil, Ceutorhynchus napi Gyll., is a serious pest of winter oilseed rape (Brassica napus L.) crops in Europe causing severe yield loss. In currently used oilseed rape cultivars no resistance to C. napi has been identified. Resynthesized lines of B. napus have potential to broaden the genetic variability and may improve resistance to insect pests. In this study, the susceptibility to C. napi of three cultivars, one breeding line and five resynthesized lines of oilseed rape was compared in a semi-field plot experiment under multi-choice conditions. Plant acceptance for oviposition was estimated by counting the number of C. napi larvae in stems. The larval instar index and the dry body mass were assessed as indicators of larval performance. The extent of larval feeding within stems was determined by the stem injury coefficient. Morphological stem traits and stem contents of glucosinolates were assessed as potential mediators of resistance. The resynthesized line S30 had significantly fewer larvae than the cultivars Express617 and Visby and the resynthesized lines L122 and L16. The low level of larval infestation in S30 was associated with a low larval instar and stem injury index. Low numbers of larvae were not correlated with the length or diameter of stems, and the level of stem glucosinolates. As indicated by the low larval infestation and slow larval development the resistance of S30 to C. napi is based on both antixenotic and antibiotic properties of the genotypes. The resynthesized line S30 should therefore be introduced into B. napus breeding programs to enhance resistance against C. napi.
[Mh] Termos MeSH primário: Brassica napus/genética
Ectoparasitoses/prevenção & controle
Imunidade Vegetal/genética
Caules de Planta/genética
[Mh] Termos MeSH secundário: Animais
Brassica napus/imunologia
Brassica napus/parasitologia
Ectoparasitoses/genética
Ectoparasitoses/imunologia
Feminino
Genótipo
Glucosinolatos/biossíntese
Larva/patogenicidade
Larva/fisiologia
Masculino
Oviposição/fisiologia
Contagem de Ovos de Parasitas
Melhoramento Vegetal
Caules de Planta/imunologia
Caules de Planta/parasitologia
Gorgulhos/patogenicidade
Gorgulhos/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Glucosinolates)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170922
[Lr] Data última revisão:
170922
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170708
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0180807



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