Base de dados : MEDLINE
Pesquisa : A18.560 [Categoria DeCS]
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[PMID]:28742458
[Au] Autor:Henricot B; Pérez-Sierra A; Armstrong AC; Sharp PM; Green S
[Ad] Endereço:First, third, and fifth authors: Forest Research, Northern Research Station, Roslin, Midlothian EH25 9SY, United Kingdom; second author: Forest Research, Alice Holt Lodge, Farnham, Surrey GU10 4LH, United Kingdom; and fourth author: Institute of Evolutionary Biology, University of Edinburgh, Edinbur
[Ti] Título:Morphological and Genetic Analyses of the Invasive Forest Pathogen Phytophthora austrocedri Reveal that Two Clonal Lineages Colonized Britain and Argentina from a Common Ancestral Population.
[So] Source:Phytopathology;107(12):1532-1540, 2017 12.
[Is] ISSN:0031-949X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Phytophthora austrocedri is causing widespread mortality of Austrocedrus chilensis in Argentina and Juniperus communis in Britain. The pathogen has also been isolated from J. horizontalis in Germany. Isolates from Britain, Argentina, and Germany are homothallic, with no clear differences in the dimensions of sporangia, oogonia, or oospores. Argentinian and German isolates grew faster than British isolates across a range of media and had a higher temperature tolerance, although most isolates, regardless of origin, grew best at 15°C and all isolates were killed at 25°C. Argentinian and British isolates caused lesions when inoculated onto both A. chilensis and J. communis; however, the Argentinian isolate caused longer lesions on A. chilensis than on J. communis and vice versa for the British isolate. Genetic analyses of nuclear and mitochondrial loci showed that all British isolates are identical. Argentinian isolates and the German isolate are also identical but differ from the British isolates. Single-nucleotide polymorphisms are shared between the British and Argentinian isolates. We concluded that British isolates and Argentinian isolates conform to two distinct clonal lineages of P. austrocedri founded from the same as-yet-unidentified source population. These lineages should be recognized and treated as separate risks by international plant health legislation.
[Mh] Termos MeSH primário: Cupressaceae/microbiologia
Variação Genética
Juniperus/microbiologia
Phytophthora/genética
Doenças das Plantas/microbiologia
[Mh] Termos MeSH secundário: Argentina
Florestas
Filogenia
Phytophthora/isolamento & purificação
Phytophthora/ultraestrutura
Polimorfismo de Nucleotídeo Único/genética
Esporângios
Reino Unido
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180215
[Lr] Data última revisão:
180215
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170726
[St] Status:MEDLINE
[do] DOI:10.1094/PHYTO-03-17-0126-R


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[PMID]:28931065
[Au] Autor:Tammana D; Tammana TVS
[Ad] Endereço:Institute of Bioinformatics and Applied Biotechnology (IBAB), Bangalore, Karnataka, India.
[Ti] Título:Chlamydomonas FAP265 is a tubulin polymerization promoting protein, essential for flagellar reassembly and hatching of daughter cells from the sporangium.
[So] Source:PLoS One;12(9):e0185108, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Tubulin polymerization promoting proteins (TPPPs) belong to a family of neomorphic moon lighting proteins, involved in various physiological and pathological conditions. In physiological conditions, TPPPs play an important role in microtubule dynamics regulating mitotic spindle assembly and in turn cell proliferation. In pathological situations, TPPPs interact with α-synuclein and ß-amyloid and promote their aggregation leading to Parkinson's disease and multiple system atrophy. Orthologs of TPPP family proteins were identified in ciliary proteomes from various organisms including Chlamydomonas but their role in ciliogenesis was not known. Here we showed that Flagellar Associated Protein, FAP265, a Chlamydomonas homologue of TPPP family proteins, localizes in the cytosol, at the basal bodies and in the flagella of vegetative Chlamydomonas cells. During cell division, the protein was found as a distinct spot in the nucleus and at the cleavage furrow which forms between the daughter cells. Further null mutants of Chlamydomonas FAP265 protein, fap265, showed severe defects in hatching from the mother sporangium. Daughter cells of fap265 were significantly larger in size compared with wild type cells. Moreover, the daughter cells present within the mother sporangium failed to form flagella before hatching. They reassembled their flagella only after hatching from the sporangium suggesting that FAP265 plays an important role in flagellar reassembly after cell division.
[Mh] Termos MeSH primário: Chlamydomonas/metabolismo
Proteínas de Plantas/metabolismo
[Mh] Termos MeSH secundário: Divisão Celular
Núcleo Celular/metabolismo
Chlamydomonas/citologia
Flagelos/metabolismo
Mutação
Proteínas de Plantas/genética
Esporângios/metabolismo
Tubulina (Proteína)/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Plant Proteins); 0 (Tubulin)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171017
[Lr] Data última revisão:
171017
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170921
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0185108


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[PMID]:28348024
[Au] Autor:Mouri Y; Konishi K; Fujita A; Tezuka T; Ohnishi Y
[Ad] Endereço:Department of Biotechnology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan.
[Ti] Título:Regulation of Sporangium Formation by BldD in the Rare Actinomycete Actinoplanes missouriensis.
[So] Source:J Bacteriol;199(12), 2017 Jun 15.
[Is] ISSN:1098-5530
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The rare actinomycete forms sporangia, including hundreds of flagellated spores that start swimming as zoospores after their release. Under conditions suitable for vegetative growth, zoospores stop swimming and germinate. A comparative proteome analysis between zoospores and germinating cells identified 15 proteins that were produced in larger amounts in germinating cells. They include an orthologue of BldD (herein named AmBldD [BldD of ]), which is a transcriptional regulator involved in morphological development and secondary metabolism in AmBldD was detected in mycelia during vegetative growth but was barely detected in mycelia during the sporangium-forming phase, in spite of the constant transcription of throughout growth. An mutant started to form sporangia much earlier than the wild-type strain, and the resulting sporangia were morphologically abnormal. Recombinant AmBldD bound a palindromic sequence, the AmBldD box, located upstream from 3',5'-Cyclic di-GMP significantly enhanced the DNA-binding ability of AmBldD. A chromatin immunoprecipitation-sequencing analysis and an search for AmBldD boxes revealed that AmBldD bound 346 genomic loci that contained the 19-bp inverted repeat 5'-NN(G/A)TNACN(C/G)N(G/C)NGTNA(C/T)NN-3' as the consensus AmBldD-binding sequence. The transcriptional analysis of 27 selected AmBldD target gene candidates indicated that AmBldD should repress 12 of the 27 genes, including , , , , and orthologues. These genes are involved in morphological development in A3(2). Thus, AmBldD is a global transcriptional regulator that seems to repress the transcription of tens of genes during vegetative growth, some of which are likely to be required for sporangium formation. The rare actinomycete undergoes complex morphological differentiation, including sporangium formation. However, almost no molecular biological studies have been conducted on this bacterium. BldD is a key global regulator involved in the morphological development of streptomycetes. BldD orthologues are highly conserved among sporulating actinomycetes, but no BldD orthologues, except one in , have been studied outside the streptomycetes. Here, it was revealed that the BldD orthologue AmBldD is essential for normal developmental processes in The AmBldD regulon seems to be different from the BldD regulon in A3(2), but they share four genes that are involved in morphological differentiation in A3(2).
[Mh] Termos MeSH primário: Regulação Bacteriana da Expressão Gênica
Micromonosporaceae/crescimento & desenvolvimento
Micromonosporaceae/genética
Proteínas Repressoras/metabolismo
Esporângios/crescimento & desenvolvimento
[Mh] Termos MeSH secundário: Sítios de Ligação
DNA Bacteriano/metabolismo
Perfilação da Expressão Gênica
Ligação Proteica
Proteínas Repressoras/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Bacterial); 0 (Repressor Proteins)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:171126
[Lr] Data última revisão:
171126
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170329
[St] Status:MEDLINE


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[PMID]:28285663
[Au] Autor:Safdar A; Li Q; Shen D; Chen L; He F; Wang R; Zhang M; Mafurah JJ; Khan SA; Dou D
[Ad] Endereço:College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; University College of Agriculture, University of Sargodha, Sargodha 40100, Pakistan.
[Ti] Título:An LRR receptor kinase regulates growth, development and pathogenesis in Phytophthora capsici.
[So] Source:Microbiol Res;198:8-15, 2017 May.
[Is] ISSN:1618-0623
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:Leucine-rich repeats (LRRs) domain containing kinase proteins (LRR-RK) perform various functions in eukaryotic organisms. However, their functions in Oomycetes are still largely unknown. Here, we identified an LRR-RK (PcLRR-RK1) gene and characterized its functions in Phytophthora capsici, a model oomycete specie and a major plant destroyer of solanaceous and cucurbitaceous vegetable crops. We showed that PcLRR-RK1-silenced P. capsici transformants exhibited reduced growth and produced highly branched fluffy hyphae. The shape and size of sporangia were also altered along with the reduced production of number of sporangia and zoospores. Moreover, silencing of the gene affected the cyst germination and penetration of germ tube into the host tissues, and led to the reduced virulence of P. capsici. Thus, we suggest that PcLRR-RK1 was essentially required for zoospores development, and successful infection of the P. capsici.
[Mh] Termos MeSH primário: Phytophthora/crescimento & desenvolvimento
Phytophthora/genética
Proteínas Quinases/metabolismo
[Mh] Termos MeSH secundário: Inativação Gênica
Hifas/crescimento & desenvolvimento
Phytophthora/patogenicidade
Proteínas Quinases/genética
Esporângios/crescimento & desenvolvimento
Esporos Fúngicos/crescimento & desenvolvimento
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
EC 2.7.- (Protein Kinases)
[Em] Mês de entrada:1704
[Cu] Atualização por classe:170413
[Lr] Data última revisão:
170413
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170314
[St] Status:MEDLINE


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[PMID]:26917703
[Au] Autor:Tsubomura M; Kurita M; Watanabe A
[Ad] Endereço:Forest Tree Breeding Center, Forestry and Forest Products Research Institute, 3809-1 Ishi, Juo, Hitachi, Ibaraki 319-1301, Japan.
[Ti] Título:Determination of male strobilus developmental stages by cytological and gene expression analyses in Japanese cedar (Cryptomeria japonica).
[So] Source:Tree Physiol;36(5):653-66, 2016 May.
[Is] ISSN:1758-4469
[Cp] País de publicação:Canada
[La] Idioma:eng
[Ab] Resumo:The molecular mechanisms that control male strobilus development in conifers are largely unknown because the developmental stages and related genes have not yet been characterized. The determination of male strobilus developmental stages will contribute to genetic research and reproductive biology in conifers. Our objectives in this study were to determine the developmental stages of male strobili by cytological and transcriptome analysis, and to determine the stages at which aberrant morphology is observed in a male-sterile mutant of Cryptomeria japonica D. Don to better understand the molecular mechanisms that control male strobilus and pollen development. Male strobilus development was observed for 8 months, from initiation to pollen dispersal. A set of 19,209 expressed sequence tags (ESTs) collected from a male reproductive library and a pollen library was used for microarray analysis. We divided male strobilus development into 10 stages by cytological and transcriptome analysis. Eight clusters (7324 ESTs) exhibited major changes in transcriptome profiles during male strobili and pollen development in C. japonica Two clusters showed a gradual increase and decline in transcript abundance, respectively, while the other six clusters exhibited stage-specific changes. The stages at which the male sterility trait of Sosyun was expressed were identified using information on male strobilus and pollen developmental stages and gene expression profiles. Aberrant morphology was observed cytologically at Stage 6 (microspore stage), and differences in expression patterns compared with wild type were observed at Stage 4 (tetrad stage).
[Mh] Termos MeSH primário: Cryptomeria/crescimento & desenvolvimento
Cryptomeria/genética
Etiquetas de Sequências Expressas
Transcriptoma
[Mh] Termos MeSH secundário: Cryptomeria/citologia
Análise de Sequência de DNA
Esporângios/citologia
Esporângios/genética
Esporângios/crescimento & desenvolvimento
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170920
[Lr] Data última revisão:
170920
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160227
[St] Status:MEDLINE
[do] DOI:10.1093/treephys/tpw001


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[PMID]:26907232
[Au] Autor:Luo J; Li Z; Wang J; Weng Q; Chen S; Hu M
[Ad] Endereço:Key Laboratory of Natural Pesticide and Chemical Biology, College of Agriculture, South China Agricultural University, Guangzhou 510642, China. luojianjun@scau.edu.cn.
[Ti] Título:Antifungal Activity of Isoliquiritin and Its Inhibitory Effect against Peronophythora litchi Chen through a Membrane Damage Mechanism.
[So] Source:Molecules;21(2):237, 2016 Feb 19.
[Is] ISSN:1420-3049
[Cp] País de publicação:Switzerland
[La] Idioma:eng
[Ab] Resumo:This study investigated the antifungal activity and potential antifungal mechanism(s) of isoliquiritin against P. litchi Chen, one of the main litchi pathogens. The antifungal activity of isoliquiritin against P. litchi Chen had been proven in a dose-dependent manner through in vitro (mycelial growth and sporangia germination) and in vivo (detached leaf) tests. Results revealed that isoliquiritin exhibited significant antifungal activity against the tested pathogens, especially, P. litchi Chen, with a minimum inhibitory concentration of 27.33 mg/L. The morphology of P. litchi Chen was apparently changed by isoliquiritin through cytoplasm leakage and distortion of mycelia. The cell membrane permeability of the P. litchi Chen increased with the increasing concentration of isoliquiritin, as evidenced by a rise in relative electric conductivity and a decrease in reducing sugar contents. These results indicated that the antifungal effects of isoliquiritin could be explained by a membrane lesion mechanism causing damage to the cell membrane integrity leading to the death of mycelial cells. Taken together, isoliquiritin may be used as a natural alternative to commercial fungicides or a lead compound to develop new fungicides for the control of litchi downy blight.
[Mh] Termos MeSH primário: Antifúngicos/administração & dosagem
Membrana Celular/efeitos dos fármacos
Chalcona/análogos & derivados
Glucosídeos/administração & dosagem
Phytophthora/efeitos dos fármacos
[Mh] Termos MeSH secundário: Antifúngicos/química
Membrana Celular/química
Chalcona/administração & dosagem
Chalcona/química
Frutas/química
Glucosídeos/química
Micélio/efeitos dos fármacos
Micélio/crescimento & desenvolvimento
Phytophthora/patogenicidade
Esporângios/efeitos dos fármacos
Esporângios/crescimento & desenvolvimento
Esporos Fúngicos/efeitos dos fármacos
Esporos Fúngicos/crescimento & desenvolvimento
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Antifungal Agents); 0 (Glucosides); 2Y348H1V4W (neoisoliquiritin); 5S5A2Q39HX (Chalcone)
[Em] Mês de entrada:1612
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160225
[St] Status:MEDLINE


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[PMID]:26763327
[Au] Autor:Llorens C; Argentina M; Rojas N; Westbrook J; Dumais J; Noblin X
[Ad] Endereço:Laboratoire de Physique de la Matière Condensée, Université Nice Sophia-Antipolis, CNRS UMR 7336, Parc Valrose, Nice Cedex 2 06108, France Institut Non Linéaire de Nice, Université Nice Sophia-Antipolis, CNRS UMR 7335, 1361 Route des Lucioles, Valbonne 06560, France.
[Ti] Título:The fern cavitation catapult: mechanism and design principles.
[So] Source:J R Soc Interface;13(114):20150930, 2016 Jan.
[Is] ISSN:1742-5662
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Leptosporangiate ferns have evolved an ingenious cavitation catapult to disperse their spores. The mechanism relies almost entirely on the annulus, a row of 12-25 cells, which successively: (i) stores energy by evaporation of the cells' content, (ii) triggers the catapult by internal cavitation, and (iii) controls the time scales of energy release to ensure efficient spore ejection. The confluence of these three biomechanical functions within the confines of a single structure suggests a level of sophistication that goes beyond most man-made devices where specific structures or parts rarely serve more than one function. Here, we study in detail the three phases of spore ejection in the sporangia of the fern Polypodium aureum. For each of these phases, we have written the governing equations and measured the key parameters. For the opening of the sporangium, we show that the structural design of the annulus is particularly well suited to inducing bending deformations in response to osmotic volume changes. Moreover, the measured parameters for the osmoelastic design lead to a near-optimal speed of spore ejection (approx. 10 m s(-1)). Our analysis of the trigger mechanism by cavitation points to a critical cavitation pressure of approximately -100 ± 14 bar, a value that matches the most negative pressures recorded in the xylem of plants. Finally, using high-speed imaging, we elucidated the physics leading to the sharp separation of time scales (30 versus 5000 µs) in the closing dynamics. Our results highlight the importance of the precise tuning of the parameters without which the function of the leptosporangium as a catapult would be severely compromised.
[Mh] Termos MeSH primário: Polypodium/anatomia & histologia
Polypodium/fisiologia
Esporângios/anatomia & histologia
Esporângios/fisiologia
[Mh] Termos MeSH secundário: Esporos
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1610
[Cu] Atualização por classe:170220
[Lr] Data última revisão:
170220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160115
[St] Status:MEDLINE


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[PMID]:26735060
[Au] Autor:Naegele RP; Quesada-Ocampo LM; Kurjan JD; Saude C; Hausbeck MK
[Ad] Endereço:First, third, and fifth authors: Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing; second author: Department of Plant Pathology, North Carolina State University, Raleigh; and fourth author: Canadian Tobacco Research Foundation, Tillonsburg, Ontario, Canada.
[Ti] Título:Regional and Temporal Population Structure of Pseudoperonospora cubensis in Michigan and Ontario.
[So] Source:Phytopathology;106(4):372-9, 2016 Apr.
[Is] ISSN:0031-949X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Cucurbit downy mildew (CDM), caused by the oomycete pathogen Pseudoperonospora cubensis, is a devastating disease that affects cucurbit species worldwide. This obligate, wind-dispersed pathogen does not overwinter in Michigan or other northern regions and new isolates can enter the state throughout the growing season. To evaluate the regional and temporal population structure of P. cubensis, sporangia from CDM lesions were collected from cucurbit foliage grown in Michigan and Ontario field locations in 2011. Population structure and genetic diversity were assessed in 257 isolates using nine simple sequence repeat markers. Genetic diversity was high for isolates from Michigan and Canada (0.6627 and 0.6131, respectively). Five genetic clusters were detected and changes in population structure varied by site and sampling date within a growing season. The Michigan and Canada populations were significantly differentiated, and a unique genetic cluster was detected in Michigan.
[Mh] Termos MeSH primário: Cucurbitaceae/microbiologia
Variação Genética
Oomicetos/genética
Doenças das Plantas/microbiologia
[Mh] Termos MeSH secundário: Análise por Conglomerados
Marcadores Genéticos
Genética Populacional
Geografia
Michigan
Repetições de Microssatélites/genética
Ontário
Oomicetos/isolamento & purificação
Esporângios
[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 (Genetic Markers)
[Em] Mês de entrada:1606
[Cu] Atualização por classe:160407
[Lr] Data última revisão:
160407
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160107
[St] Status:MEDLINE
[do] DOI:10.1094/PHYTO-02-15-0043-R


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[PMID]:27169242
[Au] Autor:Duda VI; Suzina NE
[Ti] Título:[Mechanisms of Forespore Formation during Polysporogenesis of an Anaerobic Bacterium Anaerobacter polyendosporus PST(T)].
[So] Source:Mikrobiologiia;84(5):536-45, 2015 Sep-Oct.
[Is] ISSN:0026-3656
[Cp] País de publicação:Russia (Federation)
[La] Idioma:rus
[Ab] Resumo:Forespore formation in the anaerobic bacterium Anaerobacterpolyendosporus PS-1(T) was studied by phase contrast, fluorescence, and electron microscopy. It is concluded that in this bacterium the formation of all forespores in multispore sporangia occurs via the same mechanism as that operating in all known bacilli and clostridia during the single-spore variant of endogenous sporogenesis. Its cytological indicators are as follows: (1) formation of the forespore septum, (2) engulfment of the smaller prespore cell by the larger mother cell, (3) cortex synthesis, (4) assembly of the spore coats, (5) exosporium formation, and (6) lysis of the mother cell. Polysporogenesis in strain PS-1(T) is characterized by synchronous formation of all spores (siblings) in a given sporangium and by the absence of any indication of forespore division within the mother cell. These data suggest that multiple spores within a single PS-1(T) cell result not from division of the first forespores developing at one or two cell poles, as it was reported for another polysporogenic bacterium, "Metabacterium polyspora", but rather from simultaneous independent formation of several prespores in a single mother cell in the course of modified cell division.
[Mh] Termos MeSH primário: Clostridium/fisiologia
Esporângios/fisiologia
Esporos Bacterianos/fisiologia
[Mh] Termos MeSH secundário: Anaerobiose/fisiologia
Divisão Celular/fisiologia
Clostridium/ultraestrutura
Microscopia Eletrônica
Esporângios/ultraestrutura
Esporos Bacterianos/ultraestrutura
[Pt] Tipo de publicação:ENGLISH ABSTRACT; JOURNAL ARTICLE
[Em] Mês de entrada:1606
[Cu] Atualização por classe:160512
[Lr] Data última revisão:
160512
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160513
[St] Status:MEDLINE


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[PMID]:26499339
[Au] Autor:Liao L; Zhou J; Wang H; He F; Liu S; Jiang Z; Chen S; Zhang LH
[Ad] Endereço:Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou 510642, Peoples' Republic of China.
[Ti] Título:Control of litchi downy blight by zeamines produced by Dickeya zeae.
[So] Source:Sci Rep;5:15719, 2015 Oct 26.
[Is] ISSN:2045-2322
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Zeamines (ZMS), a class of polyamine-polyketide-nonribosomal peptide produced by bacterial isolate Dickeya zeae, were shown recently to be potent antibiotics against some bacterial pathogens. In this study, the results indicated that ZMS showed antifungal activity against Peronophythora litchii and other fungal pathogens. The activity of ZMS against the oomycete pathogen P. litchi, which causes the devastating litchi downy blight, was further investigated under in vitro and in vivo conditions. ZMS displayed potent inhibitory activity against the mycelial growth and sporangia germination of P. litchii. At a concentration of 2 µg/mL, about 99% of the sporangia germination was inhibited. Scanning electron microscopy and transmission electron microscopy analyses showed that treatment with ZMS could cause substantial damages to the oomycete endomembrane system. Furthermore, treatment of litchi fruits with ZMS solution significantly (P < 0.05) reduced the fruits decay and peel browning caused by P. litchii infection during storage at 28 °C. Taken together, our results provide useful clues on the antifungal mechanisms of ZMS, and highlight the promising potentials of ZMS as a fungicide, which in particular, may be useful for prevention and control of litchi fruits decay and browning caused by P. litchii infection during storage and transportation.
[Mh] Termos MeSH primário: Enterobacteriaceae/química
Litchi/microbiologia
Macrolídeos/farmacologia
Poliaminas/farmacologia
[Mh] Termos MeSH secundário: Antibacterianos/isolamento & purificação
Antibacterianos/farmacologia
Antifúngicos/isolamento & purificação
Antifúngicos/farmacologia
Germinação/efeitos dos fármacos
Macrolídeos/isolamento & purificação
Testes de Sensibilidade Microbiana
Phytophthora/efeitos dos fármacos
Poliaminas/isolamento & purificação
Esporângios/efeitos dos fármacos
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Anti-Bacterial Agents); 0 (Antifungal Agents); 0 (Macrolides); 0 (Polyamines); 0 (zeamine)
[Em] Mês de entrada:1608
[Cu] Atualização por classe:170220
[Lr] Data última revisão:
170220
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:151027
[St] Status:MEDLINE
[do] DOI:10.1038/srep15719



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