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| Registros recuperados: 18 | |
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| Ferraz,Hélvio Gledson Maciel; Resende,Renata Sousa; Moreira,Poliana Coutinho; Silveira,Patrícia Ricardino; Milagres,Elisângela Aparecida; Oliveira,José Rogério; Rodrigues,Fabrício Ávila. |
| AbstractTomato bacterial spot on tomato may be caused by four species of Xanthomonas and among them X. gardneri(Xg) is the most destructive one, especially in areas irrigated using a center pivot system in Minas Gerais state and the midwest region of Brazil. Due to the ineffectiveness of chemical control and the lack of cultivars with high levels of genetic resistance, this study investigated the potential of three antagonists (Streptomyces setonii (UFV618), Bacillus cereus (UFV592) and Serratia marcescens (UFV252)), and the hormone jasmonic acid (JA) as a positive control, to reduce bacterial spot symptoms and to potentiate defense enzymes in the leaves of tomato plants infected by Xg. Tomato seeds were microbiolized with each antagonist, and the soil was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Xanthomonas gardneri; Solanum lycopersicum; Biological control; Host defense mechanisms; Induced resistance. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052015000400417 |
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| Ribeiro,Edenilson B; Castellani,Maria Aparecida; Andrade,Daniel Júnior de; Prado,Renato de M; Souza,Larissa Adelita SC; Freire,Daniel S; Savi,Patrice Jacob. |
| ABSTRACT Silicon is an inducer of plant resistance to arthropod pests, being a promising strategy for integrated management. The aim of this study was to evaluate the effect of silicon on biological, reproductive and population aspects of parental and F1 generations of the two-spotted spider mite on strawberry plants. Potassium silicate, nanosilica and water were applied to the plants. Two-spotted spider mite females were confined to strawberry leaf disks for oviposition and, after hatching, larvae were observed until the emergence of adults. Once adults had been obtained, couples were formed in order to evaluate pre-oviposition, oviposition, longevity and fertility, with an estimated net reproduction rate, intrinsic rate of increase, finite rate of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tetranychus urticae; Nanosilica; Induced resistance; Potassium silicate. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362021000100005 |
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| Barguil,Beatriz M; Resende,Mário Lúcio V; Resende,Renata S; Beserra Júnior,J. Evando A.; Salgado,Sônia M. L. |
| Phoma leaf spot, caused by Phoma costarricensis poses a serious threat to coffee (Coffea arabica) production, especially in the highlands of the state of Minas Gerais, Brazil. Extracts of citric biomass, coffee berry husks and coffee leaves severely affected by rust caused by Hemileia vastatrix, were evaluated against P. costarricensis. In an in vitro assay, aqueous extracts of rusted leaves and berry husks plus the commercial extracts based on citric biomass named Ecolife® and Agromil® were tested at various dilutions on the mycelial growth inhibition of P. costarricensis. In vivo, coffee seedlings maintained in glasshouse, were sprayed with these extracts seven days before inoculation of P. costarricensis. Only extracts from citric biomass had inhibitory... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Coffea arabica; Fungal disease; Control; Induced resistance; Elicitors. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582005000500014 |
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| Usman Ghazanfar,M; Wakil,Waqas; Talib Sahi,Shahbaz. |
| Since new fungicides are scarce in the market and because of environmental problems, researchers are now emphasizing other alternatives, such as the genetic potential of plants, resistance against pathogens, and the use of biotic and abiotic agents to develop induced or acquired resistance. We investigated the role of resistance-inducing substances (chemicals and plant extracts) in three chickpea cvs. C-44, Pb-91, and Bittle-98 in field experiments against Ascochyta blight disease. These cultivars were selected on the basis of better yield potential shown in previous experiments. Aqueous solution of salicylic acid (SA) at 0.5, 1.0, and 1.5 mM; acibenzolar-S-methyl (Bion®, ASM) at 0.4, 0.8, and 1.2 mM; and KOH at 25, 50, and 75 mM were applied, whereas... |
| Tipo: Journal article |
Palavras-chave: Induced resistance; Acibenzolar-S-methyl; Salicylic acid. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000100007 |
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| Hirano, Emiko; Koike, Masanori; Aiuchi, Daigo; Tani, Masayuki; 平野, 恵美子; 小池, 正徳; 相内, 大吾; 谷, 昌幸. |
| The ability of Verticillium lecanii (Lecanicillium muscarium; B-2) to induce host resistance and defense responses against subsequent challenge with cucumber powdery mildews was examined in a glasshouse. A root test showed that, after inoculation with V. lecanii blastspore on cucumber roots, induction of systemic resistance in those V. lecanii pre-inoculated plants engendered significantly fewer lesions and reduced disease severity compared with non-inoculated plants. Furthermore, in plants inoculated with V. lecanii blastspore on their roots, the fungi showed high colonizing ability on cucumber rhizoplane and inside root tissues. Nevertheless, activities of peroxidase (PO) and phenylalanine ammonia-lyase (PAL) increased slightly, but not significantly. In... |
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Palavras-chave: Induced resistance; Lecanicillium muscarium; Powdery Mildew; Verticillium lecanii. |
| Ano: 2008 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2277 |
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| Aguiar,Tarsis; Luiz,Caroline; Rocha Neto,Argus Cezar; Di Piero,Robson Marcelo. |
| Abstract Polysaccharides from fungal wastes were partially characterized and evaluated for their protective effects against bacterial spot caused by Xanthomonas gardneri on four tomato cultivars: Santa Cruz Kada, Natália, BRS Sena and Forty. The polysaccharides were extracted from spent mushroom substrate of Pleurotus ostreatus, residual brewery yeast (Saccharomyces cerevisiae), and basidiocarps discarded from Lentinula edodes production. These polysaccharides were characterized for total carbohydrates, phenolics and proteins content, pH, scatter intensity, conductivity, Zeta potential, DPPH scavenging assay and infrared spectroscopy. The effects of time interval between treatment and inoculation (4 or 7 days) and polysaccharide concentrations (0.5 or 1.5... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Induced resistance; Lentinula edodes; Pleurotus ostreatus; Saccharomyces cerevisiae; Solanum lycopersicon; Xanthomonas gardneri. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000200299 |
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| Ferraz,Hélvio Gledson Maciel; Resende,Renata Sousa; Silveira,Patrícia Ricardino; Andrade,Camila Cristina Lage; Milagres,Elisângela Aparecida; Oliveira,José Rogério; Rodrigues,Fabrício de Ávila. |
| Fusarium wilt, caused by Fusarium oxysporum f.sp. lycopersici (Fol), is one of the most important diseases that affect tomato yield worldwide. This study investigated the potential of three antagonists, Streptomyces setonii (UFV 618), Bacillus cereus (UFV 592) and Serratia marcescens (UFV 252), and as positive control the hormone jasmonic acid (JA), to reduce Fusarium wilt symptoms and to potentiate the defense enzymes in the stem tissues of tomato plants infected by Fol. The seeds were microbiolized with each antagonist, and the soil was also drenched with them. The plants were sprayed with JA 48 h before Fol inoculation. The area under the Fusarium wilt index progress curve was reduced by 54, 48, 47 and 45% for the UFV 618, JA, UFV 592 and UFV 252... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fusarium oxysporum f.sp. lycopersici; Solanum lycopersicum; Biological control; Host defense mechanisms; Induced resistance; Vascular pathogen. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052014000300008 |
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| Pulga,Paulo Sérgio; Henshel,Juliane Maciel; Resende,Juliano Tadeu Vilela de; Zeist,André Ricardo; Moreira,Aline Fabiana Paladini; Gabriel,André; Silva,Mayara Barbosa; Gonçalves,Leandro Simões Azeredo. |
| ABSTRACT This study was performed to evaluate the effect of exogenous application of salicylic acid as a resistance inducer to two-spotted spider mite and tomato pinworm on tomato genotypes. Bioassays were carried out in three commercial genotypes (‘Redenção’, ‘Giuliana’, and ‘Alambra’) and one wild genotype (Solanum habrochaites var. hirsutum, accession PI-127826). Average distance travelled by the two-spotted spider mite and number of eggs deposited over the leaflets of the genotypes were investigated. Concerning pinworm bioassay, number of eggs, leafminers on leaflet surface and percentage of leaf area consumed by leafminers were evaluated using a scanner. Furthermore, severity of attack to plants was evaluated by score scale for damages, types of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum habrochaites var. hirsutum; Tuta absoluta; Tetranychus urticae; Methyl salicylate; Induced resistance. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000300288 |
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| Correa,Rogério S.B.; Moraes,Jair C.; Auad,Alexander M.; Carvalho,Geraldo A.. |
| The objective of this work was to evaluate the effect of calcium silicate (CaSiO3) and of the activator acibenzolar-S-methyl (BTH) on resistance induction in cucumber, against the whitefly Bemisia tabaci (Gennadius) biotype B. Antibiosis, free-choice and no-choice preference tests were conducted in a greenhouse and at laboratory of the, Departamento de Entomologia of the Universidade Federal de Lavras (UFLA), MG, Brazil. The design was completely randomized, with the following treatments: 1) control; 2) application of 3 g calcium silicate.kg-1 of substrate; 3) two 200ml applications of 1% calcium silicate solution per pot; 4) two 100ml applications of 0.005% BTH solution per pot; and 5) application of calcium silicate and BTH at the rates used for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Calcium silicate; BTH; Induced resistance. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000300011 |
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| Registros recuperados: 18 | |
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