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Pesquisa : B01.050.500.131.617.412.165 [Categoria DeCS]
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  1 / 3996 MEDLINE  
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[PMID]:29378241
[Au] Autor:Zhang L; Wang MY; Li XP; Wang XT; Jia CL; Yang XZ; Feng RQ; Yuan ML
[Ad] Endereço:State Key Laboratory of Grassland Agro-Ecosystems, College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou, Gansu 730020, People's Republic of China.
[Ti] Título:A small set of differentially expressed genes was associated with two color morphs in natural populations of the pea aphid Acyrthosiphon pisum.
[So] Source:Gene;651:23-32, 2018 Apr 20.
[Is] ISSN:1879-0038
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Color polymorphism is an ecologically important trait, which is related to local adaptation and ecological speciation. The pea aphid Acyrthosiphon pisum shows color polymorphism: the red and green color morphs where differences in ecological adaptation have been observed. Here, we measured genome-wide gene expression profiles of two color morphs in natural populations of A. pisum to explore the genetic basis of differentiated ecological adaptation. The results showed that only 32 genes were significantly differentially expressed between the two morphs, of which 18 had functional annotations. Among them, 13 genes were up-regulated [e.g. genes encoding protoheme IX farnesyltransferase (LOC100570971), carotene dehydrogenase (tor) and V-type proton ATPase subunit B (LOC100169462)] and 5 genes were down-regulated in the red morph (e.g. genes encoding transcription factors and heat shock proteins). To assess the functional importance of these differentially expressed genes (DEGs), we selected three highly expressed DEGs (LOC100169462, LOC100570971 and tor) with functional annotations and analyzed their expression levels in the red morph under three low temperatures (1 °C, 4 °C, and 8 °C) for 24 h. These three DEGs showed an interesting expression response to the cold acclimating conditions which resulted in an obvious phenotypic change of the red individuals to be greenish variants. This study suggests a link between gene expressions and body color polymorphisms in the pea aphid and provides important clues for further studying molecular mechanisms of ecological adaptation in aphids.
[Mh] Termos MeSH primário: Afídeos/genética
Genes de Insetos
[Mh] Termos MeSH secundário: Animais
Temperatura Baixa
Regulação Enzimológica da Expressão Gênica
Ontologia Genética
Medicago sativa
Pigmentação/genética
Polimorfismo Genético
Reação em Cadeia da Polimerase em Tempo Real
Análise de Sequência de RNA
Transcriptoma
beta-Caroteno 15,15'-Mono-Oxigenase/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
EC 1.14.99.36 (beta-Carotene 15,15'-Monooxygenase)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180130
[St] Status:MEDLINE


  2 / 3996 MEDLINE  
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[PMID]:29220517
[Au] Autor:Varenhorst AJ; Pritchard SR; O'Neal ME; Hodgson EW; Singh AK
[Ad] Endereço:Plant Science Department, South Dakota State University.
[Ti] Título:Determining the Effectiveness of Three-Gene Pyramids Against Aphis glycines (Hemiptera: Aphididae) Biotypes.
[So] Source:J Econ Entomol;110(6):2428-2435, 2017 12 05.
[Is] ISSN:1938-291X
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Since the discovery of Aphis glycines Matsumura (Hemiptera: Aphididae) in the United States, the primary management tactic has been foliar insecticides. Alternative management options such as host plant resistance to A. glycines have been developed and their effectiveness proved. However, the use of host plant resistance was complicated by the discovery of multiple, virulent biotypes of A. glycines in the United States that are capable of overcoming single Rag genes, Rag1 and Rag2, as well as a two-gene pyramid of Rag1+Rag2. However, current models predict that the virulent allele frequency of A. glycines decreases in response to the use of pyramided Rag genes, suggesting that pyramids represent a more sustainable use of these traits. Previous research has demonstrated that virulent biotypes can be effectively managed using a three-gene pyramid of Rag1+Rag2+Rag3. Additional Rag-genes have been discovered (Rag4 and Rag5), but whether the incorporation of these genes into novel three-gene pyramids will improve efficacy is not known. We tested single-gene (Rag1 and Rag2) and pyramid cultivars (Rag1+Rag2, Rag1+Rag2+Rag3, Rag1+Rag2+Rag4) to multiple biotypes in laboratory assays. Our results confirm that the Rag1+Rag2+Rag3 pyramid effectively manages all known A. glycines biotypes when compared with cultivars that are overcome by the associated biotype. Our results indicate that Rag1+Rag2+Rag4 would be an effective management option for biotype-1, biotype-2, and biotype-3 A. glycines, but had a negligible impact on biotype-4.
[Mh] Termos MeSH primário: Afídeos/fisiologia
Herbivoria
Controle Biológico de Vetores/métodos
Feijão de Soja/genética
[Mh] Termos MeSH secundário: Animais
Fenótipo
Melhoramento Vegetal
Feijão de Soja/crescimento & desenvolvimento
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1712
[Cu] Atualização por classe:180302
[Lr] Data última revisão:
180302
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171209
[St] Status:MEDLINE
[do] DOI:10.1093/jee/tox230


  3 / 3996 MEDLINE  
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[PMID]:29301046
[Au] Autor:Bayendi Loudit SM; Boullis A; Verheggen F; Francis F
[Ad] Endereço:Functional & evolutionary entomology, Gembloux Agro-Bio Tech, University of Liege, Gembloux, Belgium.
[Ti] Título:Identification of the Alarm Pheromone of Cowpea Aphid, and Comparison With Two Other Aphididae Species.
[So] Source:J Insect Sci;18(1), 2018 Jan 01.
[Is] ISSN:1536-2442
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:In response to a predator attack, many Aphidinae species release an alarm pheromone, which induces dispersal behavior in other individuals within the colony. The major component of this pheromone is the sesquiterpene (E)-ß-farnesene (Eßf), but variations occur between aphid species. In the present work, we collected, identified, and quantified the alarm pheromone of Aphis craccivora Koch (Hemiptera: Aphididae), before quantifying the escape behavior induced in the neighboring individuals. We compared the semiochemistry and associated behavior of alarm signaling with two other aphid species: Myzus persicae (Sulzer) (Hemiptera: Aphididae) and Aphis fabae Scopoli (Hemiptera: Aphididae). Eßf was the only volatile found for each species. M. persicae produces a higher quantity of Eßf (8.39 ± 1.19 ng per individual) than A. craccivora (6.02 ± 0.82 ng per individual) and A. fabae (2.04 ± 0.33 ng per individual). Following exposure to natural doses of synthetic Eßf (50 ng and 500 ng), A. craccivora respond more strongly than the two other Aphidinae species with 78% of the individuals initiated alarm behavior for 500 ng of Eßf.
[Mh] Termos MeSH primário: Afídeos/química
Feromônios/análise
Sesquiterpenos/análise
[Mh] Termos MeSH secundário: Comunicação Animal
Animais
Comportamento Animal
Compostos Orgânicos Voláteis/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Pheromones); 0 (Sesquiterpenes); 0 (Volatile Organic Compounds); 18794-84-8 (beta-farnesene)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180221
[Lr] Data última revisão:
180221
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180105
[St] Status:MEDLINE
[do] DOI:10.1093/jisesa/iex097


  4 / 3996 MEDLINE  
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[PMID]:29177898
[Au] Autor:Fan LP; Ouyang F; Su JW; Ge F
[Ad] Endereço:State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beichen West Road, Chaoyang, Beijing, 100101, People's Republic of China.
[Ti] Título:Adaptation of Defensive Strategies by the Pea Aphid Mediates Predation Risk from the Predatory Lady Beetle.
[So] Source:J Chem Ecol;44(1):40-50, 2018 Jan.
[Is] ISSN:1573-1561
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Within a species, individual animals adopt various defensive strategies to resist natural enemies, but the defensive strategies that are adopted in response to variations in predation risk are poorly understood. Here, we assessed consecutive foraging processes on cohorts of two biotypes (green and red) of the pea aphid, Acyrthosiphon pisum, by the predatory lady beetle Propylea japonica, to investigate the adaptive mechanism underlying the defensive strategy. We observed the behavioral responses of individuals (continue feeding or escape, i.e., walk away or drop off from initial feeding site), simultaneously quantified the amount of alarm pheromone, (E)-ß-farnesene (EßF) released from cohorts using gas chromatography-mass spectrometry (GC-MS), and recorded the foraging times of predators in intervals. The results indicated that: (1) the anti-predator responses differed markedly between biotypes and among the stages of the consecutive foraging processes. (2) Few green cohorts tended to release EßF during the first foraging; those that did released only a low dose that did not increase the number of escapes. However, the amount of EßF rose rapidly following the second foraging process, which caused an intense escape response. In contrast, more red cohorts released greater amounts of EßF, which caused more individuals to escape from their innate feeding sites during the first foraging. During the second foraging, more red individuals tended to escape without releasing EßF in greater quantities. (3) The foraging time was effectively shortened in each biotype cohort that adopted diverse defensive strategies. This study of the defensive strategies of the pea aphid may contribute to understanding the intraspecific differences in aphid defense mechanisms.
[Mh] Termos MeSH primário: Afídeos/fisiologia
Coleópteros/fisiologia
[Mh] Termos MeSH secundário: Animais
Afídeos/química
Reação de Fuga/efeitos dos fármacos
Cromatografia Gasosa-Espectrometria de Massas
Feromônios/análise
Feromônios/química
Feromônios/farmacologia
Comportamento Predatório/efeitos dos fármacos
Risco
Sesquiterpenos/análise
Sesquiterpenos/farmacologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Pheromones); 0 (Sesquiterpenes); 18794-84-8 (beta-farnesene)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180221
[Lr] Data última revisão:
180221
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171128
[St] Status:MEDLINE
[do] DOI:10.1007/s10886-017-0908-y


  5 / 3996 MEDLINE  
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[PMID]:28468686
[Au] Autor:Tungadi T; Groen SC; Murphy AM; Pate AE; Iqbal J; Bruce TJA; Cunniffe NJ; Carr JP
[Ad] Endereço:Department of Plant Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EA, UK.
[Ti] Título:Cucumber mosaic virus and its 2b protein alter emission of host volatile organic compounds but not aphid vector settling in tobacco.
[So] Source:Virol J;14(1):91, 2017 05 03.
[Is] ISSN:1743-422X
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Aphids, including the generalist herbivore Myzus persicae, transmit cucumber mosaic virus (CMV). CMV (strain Fny) infection affects M. persicae feeding behavior and performance on tobacco (Nicotiana tabacum), Arabidopsis thaliana and cucurbits in varying ways. In Arabidopsis and cucurbits, CMV decreases host quality and inhibits prolonged feeding by aphids, which may enhance virus transmission rates. CMV-infected cucurbits also emit deceptive, aphid-attracting volatiles, which may favor virus acquisition. In contrast, aphids on CMV-infected tobacco (cv. Xanthi) exhibit increased survival and reproduction. This may not increase transmission but might increase virus and vector persistence within plant communities. The CMV 2b counter-defense protein diminishes resistance to aphid infestation in CMV-infected tobacco plants. We hypothesised that in tobacco CMV and its 2b protein might also alter the emission of volatile organic compounds that would influence aphid behavior. RESULTS: Analysis of headspace volatiles emitted from tobacco plants showed that CMV infection both increased the total quantity and altered the blend produced. Furthermore, experiments with a CMV 2b gene deletion mutant (CMV∆2b) showed that the 2b counter-defense protein influences volatile emission. Free choice bioassays were conducted where wingless M. persicae could choose to settle on infected or mock-inoculated plants under a normal day/night regime or in continual darkness. Settling was recorded at 15 min, 1 h and 24 h post-release. Statistical analysis indicated that aphids showed no marked preference to settle on mock-inoculated versus infected plants, except for a marginally greater settlement of aphids on mock-inoculated over CMV-infected plants under normal illumination. CONCLUSIONS: CMV infection of tobacco plants induced quantitative and qualitative changes in host volatile emission and these changes depended in part on the activity of the 2b counter-defense protein. However, CMV-induced alterations in tobacco plant volatile emission did not have marked effects on the settling of aphids on infected versus mock-inoculated plants even though CMV-infected plants are higher quality hosts for M. persicae.
[Mh] Termos MeSH primário: Afídeos/virologia
Cucumovirus/fisiologia
Insetos Vetores/virologia
Tabaco/virologia
Proteínas Virais/metabolismo
Compostos Orgânicos Voláteis/metabolismo
[Mh] Termos MeSH secundário: Animais
Afídeos/fisiologia
Cucumovirus/genética
Cucumovirus/patogenicidade
Comportamento Alimentar/fisiologia
Interações Hospedeiro-Patógeno
Doenças das Plantas/virologia
Interferência de RNA
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (2b protein, cucumber mosaic virus); 0 (Viral Proteins); 0 (Volatile Organic Compounds)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180213
[Lr] Data última revisão:
180213
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170505
[St] Status:MEDLINE
[do] DOI:10.1186/s12985-017-0754-0


  6 / 3996 MEDLINE  
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[PMID]:29368476
[Au] Autor:Bogdanov YF
[Ti] Título:[Inverted meiosis and its place in the evolution of sexual reproduction pathways].
[So] Source:Genetika;52(5):541-60, 2016 May.
[Is] ISSN:0016-6758
[Cp] País de publicação:Russia (Federation)
[La] Idioma:rus
[Ab] Resumo:Inverted meiosis is observed in plants (Cyperaceae and Juncaceae) and insects (Coccoidea, Aphididae) with holocentric chromosomes, the centromeres of which occupy from 70 to 90% of the metaphase chromosome length. In the first meiotic division (meiosis I), chiasmata are formed and rodlike bivalents orient equationally, and in anaphase I, sister chromatids segregate to the poles; the diploid chromosome number is maintained. Non-sister chromatids of homologous chromosomes remain in contact during interkinesis and prophase II and segregate in anaphase II, forming haploid chromosome sets. The segregation of sister chromatids in meiosis I was demonstrated by example of three plant species that were heterozygous for chromosomal rearrangements. In these species, sister chromatids, marked with rearrangement, segregated in anaphase I. Using fluorescent antibodies, it was demonstrated that meiotic recombination enzymes Spo11 and Rad5l, typical of canonical meiosis, functioned at the meiotic prophase I of pollen mother cells of Luzula elegance and Rhynchospora pubera. Moreover, antibodies to synaptonemal complexes proteins ASY1 and ZYP1 were visualized as filamentous structures, pointing to probable formation of synaptonemal complexes. In L. elegance, chiasmata are formed by means of chromatin threads containing satellite DNA. According to the hypothesis of the author of this review, equational division of sister chromatids at meiosis I in the organisms with inverted meiosis can be explained by the absence of specific meiotic proteins (shugoshins). These proteins are able to protect cohesins of holocentric centromeres from hydrolysis by separases at meiosis I, as occurs in the organisms with monocentric chromosomes and canonical meiosis. The basic type of inverted meiosis was described in Coccoidea and Aphididae males. In their females, the variants of parthenogenesis were also observed. Until now, the methods of molecular cytogenetics were not applied for the analysis of inverted meiosis in Coccoidea and Aphididae. Evolutionary, inverted meiosis is thought to have appeared secondarily as an adaptation of the molecular mechanisms of canonical meiosis to chromosome holocentrism.
[Mh] Termos MeSH primário: Afídeos/fisiologia
Evolução Biológica
Cyperaceae/fisiologia
Hemípteros/fisiologia
Meiose/fisiologia
[Mh] Termos MeSH secundário: Animais
Reprodução/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180205
[Lr] Data última revisão:
180205
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180126
[St] Status:MEDLINE


  7 / 3996 MEDLINE  
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[PMID]:29187604
[Au] Autor:Wong L; Grainger TN; Start D; Gilbert B
[Ad] Endereço:Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Toronto, Ontario, Canada M5S 3B2.
[Ti] Título:An invasive herbivore structures plant competitive dynamics.
[So] Source:Biol Lett;13(11), 2017 11.
[Is] ISSN:1744-957X
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Species interactions are central to our understanding of ecological communities, but may change rapidly with the introduction of invasive species. Invasive species can alter species interactions and community dynamics directly by having larger detrimental effects on some species than others, or indirectly by changing the ways in which native species compete among themselves. We tested the direct and indirect effects of an invasive aphid herbivore on a native aphid species and two host milkweed species. The invasive aphid caused a 10-fold decrease in native aphid populations, and a 30% increase in plant mortality (direct effects). The invasive aphid also increased the strength of interspecific competition between the two native plant hosts (indirect effects). By investigating the role that indirect effects play in shaping species interactions in native communities, our study highlights an understudied component of species invasions.
[Mh] Termos MeSH primário: Afídeos/fisiologia
Asclepias/crescimento & desenvolvimento
Herbivoria
Espécies Introduzidas
[Mh] Termos MeSH secundário: Animais
Ecossistema
Comportamento Alimentar
América do Norte
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180204
[Lr] Data última revisão:
180204
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171201
[St] Status:MEDLINE


  8 / 3996 MEDLINE  
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[PMID]:28463435
[Au] Autor:Peng T; Chen X; Pan Y; Zheng Z; Wei X; Xi J; Zhang J; Gao X; Shang Q
[Ad] Endereço:College of Plant Science, Jilin University, Changchun, China.
[Ti] Título:Transcription factor aryl hydrocarbon receptor/aryl hydrocarbon receptor nuclear translocator is involved in regulation of the xenobiotic tolerance-related cytochrome P450 CYP6DA2 in Aphis gossypii Glover.
[So] Source:Insect Mol Biol;26(5):485-495, 2017 10.
[Is] ISSN:1365-2583
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The cotton aphid, Aphis gossypii, is one of the most economically important agricultural pests worldwide as it is polyphagous and resistant to many classes of insecticides. Overexpression of the cytochrome P450 monooxygenase (P450) CYP6DA2 has previously been found to be associated with gossypol and spirotetramat tolerance in the cotton aphid. In the present study, the elements located in the promoter region (-357:-343; -250:-241; -113:-104) of CYP6DA2 were shown to control promoter activity, and gossypol induction was observed. We hypothesized that the expression of CYP6DA2 is subject to transcriptional regulation. To investigate the underlying mechanism, we assessed two transcription factors, aryl hydrocarbon receptor (AhR) and aryl hydrocarbon receptor nuclear translocator (ARNT), and found that the abundance of AhR was highly correlated with CYP6DA2 abundance. RNA interference of AhR or ARNT significantly decreased the levels of the target gene as well as those of its counterpart, and both dramatically repressed CYP6DA2 expression. Cotransfection of the ARNT, AhR, or AhR plus ARNT and CYP6DA2 promoter constructs elevated CYP6DA2 promoter activity, with the AhR plus ARNT cotransfection being the most effective. Thus, these elements located in the promoter were responsible for CYP6DA2 transcription, and CYP6DA2 expression was regulated by the transcription factors AhR and ARNT.
[Mh] Termos MeSH primário: Afídeos/metabolismo
Translocador Nuclear Receptor Aril Hidrocarboneto/metabolismo
Família 6 do Citocromo P450/metabolismo
Receptores de Hidrocarboneto Arílico/metabolismo
[Mh] Termos MeSH secundário: Sequência de Aminoácidos
Animais
Afídeos/genética
Compostos Aza
Sequência de Bases
Sequência Conservada
Família 6 do Citocromo P450/genética
Técnicas de Silenciamento de Genes
Gossipol
Proteínas de Insetos/metabolismo
Resistência a Inseticidas
Dados de Sequência Molecular
Regiões Promotoras Genéticas
Compostos de Espiro
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Aza Compounds); 0 (Insect Proteins); 0 (Receptors, Aryl Hydrocarbon); 0 (Spiro Compounds); 138391-32-9 (Aryl Hydrocarbon Receptor Nuclear Translocator); 4G7KR034OX (spirotetramat); EC 1.14.14.1 (Cytochrome P450 Family 6); KAV15B369O (Gossypol)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:180111
[Lr] Data última revisão:
180111
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170503
[St] Status:MEDLINE
[do] DOI:10.1111/imb.12311


  9 / 3996 MEDLINE  
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[PMID]:28452079
[Au] Autor:Li Y; Akimoto S
[Ad] Endereço:Department of Ecology and Systematics, Graduate School of Agriculture, Hokkaido University, Sapporo, Japan.
[Ti] Título:Frequency-dependent selection acting on the widely fluctuating sex ratio of the aphid Prociphilus oriens.
[So] Source:J Evol Biol;30(7):1347-1360, 2017 Jul.
[Is] ISSN:1420-9101
[Cp] País de publicação:Switzerland
[La] Idioma:eng
[Ab] Resumo:Frequency-dependent selection is a fundamental principle of adaptive sex ratio evolution in all sex ratio theories but has rarely been detected in the wild. Through long-term censuses, we confirmed large fluctuations in the population sex ratio of the aphid Prociphilus oriens and detected frequency-dependent selection acting on these fluctuations. Fluctuations in the population sex ratio were partly attributable to climatic factors during the growing season. Climatic factors likely affected the growth conditions of host plants, which in turn led to yearly fluctuations in maternal conditions and sex ratios. In the process of frequency-dependent selection, female proportion higher or lower than ca. 60% was associated with a reduction or increase in female proportion, respectively, the next year. The rearing of aphid clones in the laboratory indicated that mothers of each clone produced an increasing number of females as maternal size increased. However, the mean male number was not related to maternal size, but varied largely among clones. Given genetic variance in the ability to produce males among clones, selection should favour clones that can produce more numerous males in years with a high female proportion. Population-level sex allocation to females was on average 71%-73% for three localities and more female-biased when maternal conditions were better. This tendency was accounted for by the hypothesis of competition among foundresses rather than the hypothesis of local mate competition. We conclude that despite consistent operation of frequency-dependent selection, the sex ratio continues to fluctuate because environmental conditions always push it away from equilibrium.
[Mh] Termos MeSH primário: Afídeos
Meio Ambiente
Razão de Masculinidade
[Mh] Termos MeSH secundário: Animais
Tamanho Corporal
Feminino
Variação Genética
Masculino
Seleção Genética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171228
[Lr] Data última revisão:
171228
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170429
[St] Status:MEDLINE
[do] DOI:10.1111/jeb.13107


  10 / 3996 MEDLINE  
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[PMID]:29190278
[Au] Autor:Rechner O; Neugart S; Schreiner M; Wu S; Poehling HM
[Ad] Endereço:Section of Phytomedicine, Institute of Horticultural Production Systems, Hannover, Germany.
[Ti] Título:Can narrow-bandwidth light from UV-A to green alter secondary plant metabolism and increase Brassica plant defenses against aphids?
[So] Source:PLoS One;12(11):e0188522, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Light of different wavelengths is essential for plant growth and development. Short-wavelength radiation such as UV can shift the composition of flavonoids, glucosinolates, and other plant metabolites responsible for enhanced defense against certain herbivorous insects. The intensity of light-induced, metabolite-based resistance is plant- and insect species-specific and depends on herbivore feeding guild and specialization. The increasing use of light-emitting diodes (LEDs) in horticultural plant production systems in protected environments enables the creation of tailor-made light scenarios for improved plant cultivation and induced defense against herbivorous insects. In this study, broccoli (Brassica oleracea var. italica) plants were grown in a climate chamber under broad spectra photosynthetic active radiation (PAR) and were additionally treated with the following narrow-bandwidth light generated with LEDs: UV-A (365 nm), violet (420 nm), blue (470 nm), or green (515 nm). We determined the influence of narrow-bandwidth light on broccoli plant growth, secondary plant metabolism (flavonol glycosides and glucosinolates), and plant-mediated light effects on the performance and behavior of the specialized cabbage aphid Brevicoryne brassicae. Green light increased plant height more than UV-A, violet, or blue LED treatments. Among flavonol glycosides, specific quercetin and kaempferol glycosides were increased under violet light. The concentration of 3-indolylmethyl glucosinolate in plants was increased by UV-A treatment. B. brassicae performance was not influenced by the different light qualities, but in host-choice tests, B. brassicae preferred previously blue-illuminated plants (but not UV-A-, violet-, or green-illuminated plants) over control plants.
[Mh] Termos MeSH primário: Afídeos/fisiologia
Brassica/metabolismo
Raios Ultravioleta
[Mh] Termos MeSH secundário: Animais
Brassica/imunologia
Ácidos Cumáricos/metabolismo
Glucosinolatos/metabolismo
Interações Hospedeiro-Parasita
Indóis/metabolismo
Quempferóis/metabolismo
Folhas de Planta
Quercetina/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Coumaric Acids); 0 (Glucosinolates); 0 (Indoles); 0 (Kaempferols); 731P2LE49E (kaempferol); 9IKM0I5T1E (Quercetin)
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171226
[Lr] Data última revisão:
171226
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171201
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0188522



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