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[PMID]:28854661
[Au] Autor:Girvin J; Whitworth RJ; Rojas LMA; Smith CM
[Ad] Endereço:USDA-APHIS-PPQ, Federal Way, WA 98003.
[Ti] Título:Resistance of Select Winter Wheat (Triticum aestivum) Cultivars to Rhopalosiphum padi (Hemiptera: Aphididae).
[So] Source:J Econ Entomol;110(4):1886-1889, 2017 Aug 01.
[Is] ISSN:1938-291X
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The bird cherry-oat aphid (Rhopalosiphum padi L.) is a global pest of wheat and vectors some of the most damaging strains of barley yellow dwarf virus (BYDV). In years of heavy R. padi infestation, R. padi and BYDV together reduce wheat yields by 30-40% in Kansas and other states of the U.S. Great Plains wheat production area. Cultivation of wheat cultivars resistant to R. padi can greatly reduce production costs and mitigate R. padi-BYDV yield losses, and increase producer profits. This study identified cultivars of hard red and soft white winter wheat with R. padi resistance that suppress R. padi populations or tolerate the effects of R. padi feeding damage. 'Pioneer (S) 25R40,' 'MFA (S) 2248,' 'Pioneer (S) 25R77,' and 'Limagrain LCS Mint' significantly reduced R. padi populations. MFA (S) 2248, Pioneer (S) 25R40, and 'Limagrain LS Wizard' exhibited tolerance expressed as significantly greater aboveground biomass. These findings are significant in that they have identified wheat cultivars currently available to producers, enabling the immediate improvement of tactics to manage R. padi and BYDV in heavily infested areas. Secondarily, these results identify cultivars that are good candidates for use in breeding and genetic analyses of arthropod resistance genes in wheat.
[Mh] Termos MeSH primário: Antibiose
Afídeos/fisiologia
Herbivoria
Triticum/fisiologia
[Mh] Termos MeSH secundário: Animais
Kansas
Luteovirus/fisiologia
Doenças das Plantas/prevenção & controle
Doenças das Plantas/virologia
Triticum/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[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:170901
[St] Status:MEDLINE
[do] DOI:10.1093/jee/tox164


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[PMID]:28242763
[Au] Autor:Zhao P; Liu Q; Miller WA; Goss DJ
[Ad] Endereço:From the Biochemistry and Chemistry Graduate Programs, Graduate Center, and.
[Ti] Título:Eukaryotic translation initiation factor 4G (eIF4G) coordinates interactions with eIF4A, eIF4B, and eIF4E in binding and translation of the barley yellow dwarf virus 3' cap-independent translation element (BTE).
[So] Source:J Biol Chem;292(14):5921-5931, 2017 Apr 07.
[Is] ISSN:1083-351X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Barley yellow dwarf virus RNA, lacking a 5' cap and a 3' poly(A) tail, contains a cap-independent translation element (BTE) in the 3'-untranslated region that interacts with host translation initiation factor eIF4G. To determine how eIF4G recruits the mRNA, three eIF4G deletion mutants were constructed: (i) eIF4G601-1196, containing amino acids 601-1196, including the putative BTE-binding region, and binding domains for eIF4E, eIF4A, and eIF4B; (ii) eIF4G601-1488, which contains an additional C-terminal eIF4A-binding domain; and (iii) eIF4G742-1196, which lacks the eIF4E-binding site. eIF4G601-1196 binds BTE tightly and supports efficient translation. The helicase complex, consisting of eIF4A, eIF4B, and ATP, stimulated BTE binding with eIF4G601-1196 but not eIF4G601-1488, suggesting that the eIF4A binding domains may serve a regulatory role, with the C-terminal binding site having negative effects. eIF4E binding to eIF4G601-1196 induced a conformational change, significantly increasing the binding affinity to BTE. A comparison of the binding of eIF4G deletion mutants with BTEs containing mutations showed a general correlation between binding affinity and ability to facilitate translation. In summary, these results reveal a new role for the helicase complex in 3' cap-independent translation element-mediated translation and show that the functional core domain of eIF4G plus an adjacent probable RNA-binding domain mediate translation initiation.
[Mh] Termos MeSH primário: Fator de Iniciação 4A em Eucariotos/metabolismo
Fator de Iniciação 4E em Eucariotos/metabolismo
Fator de Iniciação 4G em Eucariotos/metabolismo
Fatores de Iniciação em Eucariotos/metabolismo
Luteovirus/metabolismo
Biossíntese de Proteínas/fisiologia
RNA Helicases/metabolismo
RNA Viral/metabolismo
Proteínas Virais/biossíntese
[Mh] Termos MeSH secundário: Fator de Iniciação 4A em Eucariotos/genética
Fator de Iniciação 4E em Eucariotos/genética
Fator de Iniciação 4G em Eucariotos/genética
Fatores de Iniciação em Eucariotos/genética
Luteovirus/genética
RNA Helicases/genética
RNA Viral/genética
Proteínas Virais/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Eukaryotic Initiation Factor-4E); 0 (Eukaryotic Initiation Factor-4G); 0 (Eukaryotic Initiation Factors); 0 (RNA, Viral); 0 (Viral Proteins); 0 (eIF-4B); EC 2.7.7.- (Eukaryotic Initiation Factor-4A); EC 3.6.4.13 (RNA Helicases)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170601
[Lr] Data última revisão:
170601
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170301
[St] Status:MEDLINE
[do] DOI:10.1074/jbc.M116.764902


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[PMID]:28062535
[Au] Autor:Davis TS; Wu Y; Eigenbrode SD
[Ad] Endereço:Forest & Rangeland Stewardship, Colorado State University, CO (seth.davis@colostate.edu).
[Ti] Título:The Effects of Bean Leafroll Virus on Life History Traits and Host Selection Behavior of Specialized Pea Aphid (Acyrthosiphon pisum, Hemiptera: Aphididae) Genotypes.
[So] Source:Environ Entomol;46(1):68-74, 2017 02 01.
[Is] ISSN:1938-2936
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Intraspecific specialization by insect herbivores on different host plant species contributes to the formation of genetically distinct "host races," but the effects of plant virus infection on interactions between specialized herbivores and their host plants have barely been investigated. Using three genetically and phenotypically divergent pea aphid clones (Acyrthosiphon pisum L.) adapted to either pea (Pisum sativum L.) or alfalfa (Medicago sativa L.), we tested how infection of these hosts by an insect-borne phytovirus (Bean leafroll virus; BLRV) affects aphid performance and preference. Four important findings emerged: 1) mean aphid survival rate and intrinsic rate of population growth (Rm) were increased by 15% and 14%, respectively, for aphids feeding on plants infected with BLRV; 2) 34% of variance in survival rate was attributable to clone × host plant interactions; 3) a three-way aphid clone × host plant species × virus treatment significantly affected intrinsic rates of population growth; and 4) each clone exhibited a preference for either pea or alfalfa when choosing between noninfected host plants, but for two of the three clones tested these preferences were modestly reduced when selecting among virus-infected host plants. Our studies show that colonizing BLRV-infected hosts increased A. pisum survival and rates of population growth, confirming that the virus benefits A. pisum. BLRV transmission affected aphid discrimination of host plant species in a genotype-specific fashion, and we detected three unique "virus-association phenotypes," with potential consequences for patterns of host plant use by aphid populations and crop virus epidemiology.
[Mh] Termos MeSH primário: Afídeos/fisiologia
Afídeos/virologia
Luteovirus/fisiologia
Medicago sativa/virologia
Ervilhas/virologia
Doenças das Plantas/virologia
[Mh] Termos MeSH secundário: Animais
Afídeos/genética
Comportamento Alimentar
Cadeia Alimentar
Longevidade
Crescimento Demográfico
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1706
[Cu] Atualização por classe:171126
[Lr] Data última revisão:
171126
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170108
[St] Status:MEDLINE
[do] DOI:10.1093/ee/nvw150


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[PMID]:27277413
[Au] Autor:Mordecai EA; Gross K; Mitchell CE
[Ti] Título:Within-Host Niche Differences and Fitness Trade-offs Promote Coexistence of Plant Viruses.
[So] Source:Am Nat;187(1):E13-26, 2016 Jan.
[Is] ISSN:1537-5323
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Pathogens live in diverse, competitive communities, yet the processes that maintain pathogen diversity remain elusive. Here, we use a species-rich, well-studied plant virus system, the barley yellow dwarf viruses, to examine the mechanisms that regulate pathogen diversity. We empirically parameterized models of three viruses, their two aphid vectors, and one perennial grass host. We found that high densities of both aphids maximized virus diversity and that competition limited the coexistence of two closely related viruses. Even limited ability to simultaneously infect (coinfect) host individuals strongly promoted virus coexistence; preventing coinfection led to priority effects. Coinfection generated stabilizing niche differences by allowing viruses to share hosts. However, coexistence also required trade-offs between vector generalist and specialist life-history strategies. Our predicted outcomes broadly concur with previous field observations. These results show how competition within individual hosts and vectors may lead to unexpected population-level outcomes between pathogens, including coexistence, competitive exclusion, and priority effects, and how contemporary coexistence theory can help to predict these outcomes.
[Mh] Termos MeSH primário: Afídeos/virologia
Luteovirus/fisiologia
Modelos Biológicos
Doenças das Plantas/virologia
Poaceae/virologia
[Mh] Termos MeSH secundário: Animais
Biodiversidade
Interações Hospedeiro-Patógeno
Insetos Vetores/virologia
Densidade Demográfica
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, N.I.H., EXTRAMURAL; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
[Em] Mês de entrada:1612
[Cu] Atualização por classe:161230
[Lr] Data última revisão:
161230
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160610
[St] Status:MEDLINE
[do] DOI:10.1086/684114


  5 / 316 MEDLINE  
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[PMID]:27175781
[Au] Autor:Foresman BJ; Oliver RE; Jackson EW; Chao S; Arruda MP; Kolb FL
[Ad] Endereço:Department of Crop Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America.
[Ti] Título:Genome-Wide Association Mapping of Barley Yellow Dwarf Virus Tolerance in Spring Oat (Avena sativa L.).
[So] Source:PLoS One;11(5):e0155376, 2016.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Barley yellow dwarf viruses (BYDVs) are responsible for the disease barley yellow dwarf (BYD) and affect many cereals including oat (Avena sativa L.). Until recently, the molecular marker technology in oat has not allowed for many marker-trait association studies to determine the genetic mechanisms for tolerance. A genome-wide association study (GWAS) was performed on 428 spring oat lines using a recently developed high-density oat single nucleotide polymorphism (SNP) array as well as a SNP-based consensus map. Marker-trait associations were performed using a Q-K mixed model approach to control for population structure and relatedness. Six significant SNP-trait associations representing two QTL were found on chromosomes 3C (Mrg17) and 18D (Mrg04). This is the first report of BYDV tolerance QTL on chromosome 3C (Mrg17) and 18D (Mrg04). Haplotypes using the two QTL were evaluated and distinct classes for tolerance were identified based on the number of favorable alleles. A large number of lines carrying both favorable alleles were observed in the panel.
[Mh] Termos MeSH primário: Avena/genética
Avena/virologia
Resistência à Doença/genética
Estudo de Associação Genômica Ampla
Luteovirus/fisiologia
Doenças das Plantas/genética
Doenças das Plantas/virologia
[Mh] Termos MeSH secundário: Alelos
Mapeamento Cromossômico
Genética Populacional
Genoma de Planta
Genótipo
Haplótipos
Fenótipo
Polimorfismo de Nucleotídeo Único
Locos de Características Quantitativas
Característica Quantitativa Herdável
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170707
[Lr] Data última revisão:
170707
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160514
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0155376


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[PMID]:26941044
[Au] Autor:Trebicki P; Vandegeer RK; Bosque-Pérez NA; Powell KS; Dader B; Freeman AJ; Yen AL; Fitzgerald GJ; Luck JE
[Ad] Endereço:Biosciences Research, Department of Economic Development, (DED), 110 Natimuk Rd, Horsham, VIC, 3400, Australia.
[Ti] Título:Virus infection mediates the effects of elevated CO2 on plants and vectors.
[So] Source:Sci Rep;6:22785, 2016 Mar 04.
[Is] ISSN:2045-2322
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Atmospheric carbon dioxide (CO2) concentration has increased significantly and is projected to double by 2100. To increase current food production levels, understanding how pests and diseases respond to future climate driven by increasing CO2 is imperative. We investigated the effects of elevated CO2 (eCO2) on the interactions among wheat (cv. Yitpi), Barley yellow dwarf virus and an important pest and virus vector, the bird cherry-oat aphid (Rhopalosiphum padi), by examining aphid life history, feeding behavior and plant physiology and biochemistry. Our results showed for the first time that virus infection can mediate effects of eCO2 on plants and pathogen vectors. Changes in plant N concentration influenced aphid life history and behavior, and N concentration was affected by virus infection under eCO2. We observed a reduction in aphid population size and increased feeding damage on noninfected plants under eCO2 but no changes to population and feeding on virus-infected plants irrespective of CO2 treatment. We expect potentially lower future aphid populations on noninfected plants but no change or increased aphid populations on virus-infected plants therefore subsequent virus spread. Our findings underscore the complexity of interactions between plants, insects and viruses under future climate with implications for plant disease epidemiology and crop production.
[Mh] Termos MeSH primário: Afídeos/efeitos dos fármacos
Dióxido de Carbono/metabolismo
Ecossistema
Interações Hospedeiro-Patógeno/efeitos dos fármacos
Luteovirus/efeitos dos fármacos
Triticum/efeitos dos fármacos
Triticum/fisiologia
[Mh] Termos MeSH secundário: Animais
Afídeos/crescimento & desenvolvimento
Luteovirus/crescimento & desenvolvimento
Triticum/parasitologia
Triticum/virologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
142M471B3J (Carbon Dioxide)
[Em] Mês de entrada:1701
[Cu] Atualização por classe:170220
[Lr] Data última revisão:
170220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160305
[St] Status:MEDLINE
[do] DOI:10.1038/srep22785


  7 / 316 MEDLINE  
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[PMID]:26896673
[Au] Autor:Sadeghi SE; Bjur J; Ingwell L; Unger L; Bosque-Pérez NA; Eigenbrode SD
[Ad] Endereço:Department of Plant, Soil and Entomological Sciences, University of Idaho, P.O. Box 442339, Moscow, ID 83844-2339 (ebrahims@uidaho.edu, bjur2350@vandals.uidaho.edu, lunger@uidaho.edu, nbosque@uidaho.edu) Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Orga
[Ti] Título:Interactions between Metopolophium festucae cerealium (Hemiptera: Aphididae) and Barley yellow dwarf virus (BYDV-PAV).
[So] Source:J Insect Sci;16, 2016.
[Is] ISSN:1536-2442
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Interactions between an invasive aphid, Metopolophium festucae (Theobald) subsp. cerealium, and Barley yellow dwarf virus (BYDV-PAV) were studied under laboratory conditions. M. festucae cerealium is an economic pest of wheat and barley that has recently been found in high population densities in wheat in the Pacific Northwest of the United States. BYDV-PAV is the most prevalent and injurious species of BYDV worldwide and in the Pacific Northwest. Although M. festucae sensu stricto (Theobald 1917) has been reported previously as a vector of some BYDV isolates, there is no confirmed transmission of BYDV by M. festucae cerealium. Two experiments examined the ability of M. festucae cerealium to transmit BYDV-PAV. The first used single aphids caged to indicator plants of a BYDV-susceptible winter wheat cultivar and the second used multiple aphids on each test plant. M. festucae cerealium did not transmit BYDV-PAV in either experiment, whereas transmission by a known BYDV vector, Rhopalosiphum padi L., was consistently high (≥ 93%). A third experiment compared the intrinsic growth rate, days until first reproduction and daily reproduction by M. festucae cerealium on sham-inoculated and BYDV-PAV-infected wheat, but detected no differences. The findings are reviewed in light published data on M. festucae species, BYDV transmission, and the potential pest status of this new invading aphid.
[Mh] Termos MeSH primário: Afídeos/virologia
Luteovirus/fisiologia
[Mh] Termos MeSH secundário: Animais
Afídeos/fisiologia
Hordeum/virologia
Doenças das Plantas/virologia
Triticum/virologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
[Em] Mês de entrada:1610
[Cu] Atualização por classe:161230
[Lr] Data última revisão:
161230
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160221
[St] Status:MEDLINE


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[PMID]:26837218
[Au] Autor:Choi MY; Park SH
[Ad] Endereço:Department of Biological Sciences, Seoul National University, Seoul, Republic of Korea.
[Ti] Título:Adjustable under-expression of yeast mating pathway proteins in Saccharomyces cerevisiae using a programmed ribosomal frameshift.
[So] Source:Appl Microbiol Biotechnol;100(11):4997-5005, 2016 Jun.
[Is] ISSN:1432-0614
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:Experimental research in molecular biology frequently relies on the promotion or suppression of gene expression, an important tool in the study of its functions. Although yeast is among the most studied model systems with the ease of maintenance and manipulation, current experimental methods are mostly limited to gene deletion, suppression or overexpression of genes. Therefore, the ability to reduce protein expressions and then observing the effects would promote a better understanding of the exact functions and their interactions. Reducing protein expression is mainly limited by the difficulties associated with controlling the reduction level, and in some cases, the initial endogenous abundance is too low. For the under-expression to be useful as an experimental tool, repeatability and stability of reduced expression is important. We found that cis-elements in programmed -1 ribosomal frameshifting (-1RFS) of beet western yellow virus (BWYV) could be utilized to reduced protein expression in Saccharomyces cerevisiae. The two main advantages of using -1RFS are adjustable reduction rates and ease of use. To demonstrate the utility of this under-expression system, examples of reduced protein abundance were shown using yeast mating pathway components. The abundance of MAP kinase Fus3 was reduced to approximately 28-75 % of the wild-type value. Other MAP kinase mating pathway components, including Ste5, Ste11, and Ste7, were also under-expressed to verify that the -1RFS system works with different proteins. Furthermore, reduced Fus3 abundance altered the overall signal transduction outcome of the mating pathway, demonstrating the potential for further studies of signal transduction adjustment via under-expression.
[Mh] Termos MeSH primário: Proteínas Adaptadoras de Transdução de Sinal/genética
Mudança da Fase de Leitura do Gene Ribossômico
MAP Quinase Quinase Quinases/genética
Quinases de Proteína Quinase Ativadas por Mitógeno/genética
Proteínas Quinases Ativadas por Mitógeno/genética
Proteínas Quinases/genética
Proteínas de Saccharomyces cerevisiae/genética
Saccharomyces cerevisiae/genética
[Mh] Termos MeSH secundário: Proteínas Adaptadoras de Transdução de Sinal/metabolismo
Regulação Fúngica da Expressão Gênica
Luteovirus/genética
MAP Quinase Quinase Quinases/metabolismo
Quinases de Proteína Quinase Ativadas por Mitógeno/metabolismo
Proteínas Quinases Ativadas por Mitógeno/metabolismo
Proteínas Quinases/metabolismo
Saccharomyces cerevisiae/metabolismo
Proteínas de Saccharomyces cerevisiae/metabolismo
Transdução de Sinais
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Adaptor Proteins, Signal Transducing); 0 (STE5 protein, S cerevisiae); 0 (Saccharomyces cerevisiae Proteins); EC 2.7.- (Protein Kinases); EC 2.7.11.24 (FUS3 protein, S cerevisiae); EC 2.7.11.24 (Mitogen-Activated Protein Kinases); EC 2.7.11.25 (MAP Kinase Kinase Kinases); EC 2.7.11.25 (Ste11 protein, S cerevisiae); EC 2.7.12.2 (Mitogen-Activated Protein Kinase Kinases); EC 2.7.12.2 (STE7 protein, S cerevisiae)
[Em] Mês de entrada:1702
[Cu] Atualização por classe:170207
[Lr] Data última revisão:
170207
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160204
[St] Status:MEDLINE
[do] DOI:10.1007/s00253-016-7335-9


  9 / 316 MEDLINE  
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[PMID]:26814813
[Au] Autor:Tao Y; Nadege SW; Huang C; Zhang P; Song S; Sun L; Wu Y
[Ad] Endereço:State Key Laboratory of Crop Stress Biology for Arid Areas and Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, College of Plant Protection, Northwest A&F University, Yangling, 712100, Shaanxi, China.
[Ti] Título:Brachypodium distachyon is a suitable host plant for study of Barley yellow dwarf virus.
[So] Source:Virus Genes;52(2):299-302, 2016 Apr.
[Is] ISSN:1572-994X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Barley yellow dwarf viruses (BYDVs) belong to the family Luteoviridae and cause disease in cereals. Because of the large and complex genome of cereal plants, it is difficult to study host-virus interactions. In order to establish a model host system for the studies on BYDVs, we examined the susceptibility of a monocot model plant, Brachypodium distachyon, to BYDV-GAV infection. Fourteen days after BYDV-GAV inoculation by aphid transmission, B. distachyon plants (inbred line Bd21-3) showed conspicuous disease symptoms such as leaf reddening, dwarfness and root stunting. Virus accumulation was detected in both shoots and roots using reverse transcription PCR and triple antibody sandwich ELISA. Compared with infected wheat plants, B. distachyon plants developed more severe disease symptoms and accumulated a higher level of BYDV-GAV. Under transmission electron microscope, we observed that virus particles accumulated in companion cells and BYDV-GAV infection was associated with the deformation of chloroplasts in the infected leaves of B. distachyon plants. Our results suggest that B. distachyon is a suitable and promising experimental model plant for the host-BYDV-GAV pathosystem and possibly for other BYDVs.
[Mh] Termos MeSH primário: Brachypodium/virologia
Interações Hospedeiro-Patógeno
Luteovirus/fisiologia
Tropismo Viral
[Mh] Termos MeSH secundário: Doenças das Plantas/virologia
Triticum/virologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1612
[Cu] Atualização por classe:171102
[Lr] Data última revisão:
171102
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160128
[St] Status:MEDLINE
[do] DOI:10.1007/s11262-016-1297-y


  10 / 316 MEDLINE  
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[PMID]:26799958
[Au] Autor:Rotenberg D; Bockus WW; Whitfield AE; Hervey K; Baker KD; Ou Z; Laney AG; De Wolf ED; Appel JA
[Ad] Endereço:First, second, third, fourth, fifth, seventh, and eighth authors: Department of Plant Pathology, Kansas State University, Manhattan 66506; sixth author: Department of Statistics, Kansas State University, Manhattan 66506; and ninth author: Kansas Department of Agriculture, Manhattan 66506.
[Ti] Título:Occurrence of Viruses and Associated Grain Yields of Paired Symptomatic and Nonsymptomatic Tillers in Kansas Winter Wheat Fields.
[So] Source:Phytopathology;106(2):202-10, 2016 Feb.
[Is] ISSN:0031-949X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Vector-borne virus diseases of wheat are recurrent in nature and pose significant threats to crop production worldwide. In the spring of 2011 and 2012, a state-wide sampling survey of multiple commercial field sites and university-managed Kansas Agricultural Experiment Station variety performance trial locations spanning all nine crop-reporting regions of the state was conducted to determine the occurrence of Barley yellow dwarf virus-PAV (BYDV-PAV), Cereal yellow dwarf virus-RPV, Wheat streak mosaic virus (WSMV), High plains virus, Soilborne wheat mosaic virus, and Wheat spindle streak mosaic virus using enzyme-linked immunosorbent assays (ELISA). As a means of directly coupling tiller infection status with tiller grain yield, multiple pairs of symptomatic and nonsymptomatic plants were selected and individual tillers were tagged for virus species and grain yield determination at the variety performance trial locations. BYDV-PAV and WSMV were the two most prevalent species across the state, often co-occurring within location. Of those BYDV-PAV- or WSMV-positive tillers, 22% and 19%, respectively, were nonsymptomatic, a finding that underscores the importance of sampling criteria to more accurately assess virus occurrence in winter wheat fields. Symptomatic tillers that tested positive for BYDV-PAV produced significantly lower grain yields compared with ELISA-negative tillers in both seasons, as did WSMV-positive tillers in 2012. Nonsymptomatic tillers that tested positive for either of the two viruses in 2011 produced significantly lower grain yields than tillers from nonsymptomatic, ELISA-negative plants, an indication that these tillers were physiologically compromised in the absence of virus-associated symptoms. Overall, the virus survey and tagged paired-tiller sampling strategy revealed effects of virus infection on grain yield of individual tillers of plants grown under field conditions and may provide a complementary approach toward future estimates of the impact of virus incidence on crop health in Kansas.
[Mh] Termos MeSH primário: Luteoviridae/isolamento & purificação
Doenças das Plantas/virologia
Potyviridae/isolamento & purificação
Triticum/virologia
[Mh] Termos MeSH secundário: Agricultura
Biomassa
Grãos Comestíveis/crescimento & desenvolvimento
Grãos Comestíveis/virologia
Ensaio de Imunoadsorção Enzimática
Kansas
Luteoviridae/fisiologia
Luteovirus
Folhas de Planta/crescimento & desenvolvimento
Folhas de Planta/virologia
Caules de Planta/crescimento & desenvolvimento
Caules de Planta/virologia
Vírus de Plantas/isolamento & purificação
Vírus de Plantas/fisiologia
Potyviridae/fisiologia
Triticum/crescimento & desenvolvimento
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1605
[Cu] Atualização por classe:160206
[Lr] Data última revisão:
160206
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160123
[St] Status:MEDLINE
[do] DOI:10.1094/PHYTO-04-15-0089-R



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