Utilização de Acibenzolar-S-Methyl para controle de doenças foliares da soja

Dallagnol, Leandro José; Navarini, Lucas; Ugalde, Mauro Guliane; Balardin, Ricardo Silveiro; Catellam, Robson

doi:10.1590/s0100-54052006000300007

Cited by 19 publications

(20 citation statements)

References 5 publications

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“…Application of foliar fungicides, particularly quinone outside and demethylation inhibitors (QoIs and DMIs), has been recommended for minimizing the losses caused by ASR (Langenbach, Campe, Beyer, Mueller, & Conrath, 2016). Additionally, the use of inducers of resistance such as the Acibenzolar-S-Methyl (ASM), an analogue of the salicylic acid, could be an alternative for ASR management (Cruz, Rodrigues, Diniz, Moreira, & Barros, 2014;Cruz et al, 2013;Dallagnol, Navarini, Ugalde, Balardin, & Catellam, 2006;Duarte, Zambolim, Rodrigues, Rios, & Lopes, 2009;Rodrigues et al, 2009).…”

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confidence: 99%

Leaf gas exchange and chlorophyll a fluorescence in soybean leaves infected by Phakopsora pachyrhizi

Rios

Aucique‐Pérez

et al. 2017

Journal of Phytopathology

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Asian soybean rust (ASR), caused by Phakopsora pachyrhizi, is one of the most important foliar diseases affecting soybean production worldwide. This study aimed to investigate the photosynthetic performance (leaf gas exchange, chlorophyll (Chl) a fluorescence images and photosynthetic pigment pools) of soybean plants sprayed with Acibenzolar‐S‐Methyl (ASM) and the fungicide epoxiconazole + pyraclostrobin (Epo+Pyr) and further inoculated with P. pachyrhizi. The ASR symptoms progressed much faster on the leaves of plants from the control treatment (water spray) in comparison with the ASM and Epo+Pyr treatments. In general, the values for the leaf gas exchange parameters net carbon assimilation rate (A), stomatal conductance to water vapour (gs), internal CO2 concentration (Ci) and transpiration rate (E) increased for the infected plants sprayed with ASM or Epo+Pyr in comparison with plants from the control treatment. The values for the initial fluorescence (Fo), maximal fluorescence (Fm), maximal photosystem II quantum efficiency (Fv/Fm), effective photosystem II quantum yield (Y(II)) and quantum yield of regulated energy dissipation (Y(NPQ)) were consistently higher for the ASM and Epo+Pyr treatments in comparison with the control treatment at advanced stages of fungal infection. By contrast, the values for quantum yield of non‐regulated energy dissipation (Y(NO) were significantly lower for the ASM and Epo+Pyr treatments. The concentrations of total Chl a+b and carotenoids significantly increased for infected plants sprayed with ASM and Epo+Pyr in comparison with plants from the control treatment. The results of this study demonstrated that the spray of soybean plants with either ASM or Epo+Pyr contributed to reduce the negative effect of ASR on the photosynthesis of soybean plants.

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Leaf gas exchange and chlorophyll a fluorescence in soybean leaves infected by Phakopsora pachyrhizi

Rios

Aucique‐Pérez

et al. 2017

Journal of Phytopathology

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“…Acibenzolar-S-metílico (ASM) é um composto sintético, análogo funcional do ácido salicílico, capaz de ativar defesas de plantas, tais como proteínas relacionadas à patogênese, ß,1-3 glucanase e quitinase (Kessmann et al, 1995). Dallagnol et al (2006) e Santos et al (2011) demonstraram aumento da eficácia dos fungicidas com a inclusão de ASM em um programa de controle químico em soja.…”

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Fontes de fosfito e acibenzolar-S-metílico associados a fungicidas para o controle de doenças foliares na cultura da soja

Silva

Santos

Deschamps

et al. 2013

Trop. plant pathol.

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RESUMOO objetivo deste trabalho foi estudar diferentes fontes comerciais de fosfito e acibenzolar-S-metílico (ASM) seguidos de uma aplicação de fungicida no controle do míldio, do oídio e da ferrugem asiática, para reduzir o número de aplicações de fungicidas e aumentar o espectro de controle das doenças da soja. Foram conduzidos dois experimentos na região de Ponta Grossa, PR, nas safras 2006/07 e 2007/08. O delineamento experimental utilizado foi de blocos casualizados com quatro repetições. Os tratamentos foram cinco fontes comerciais de fosfitos de potássio e uma de manganês (450 g P 2 O 5 ha -1 ) e ASM (12,5 g i.a. ha -1 ), aplicados nos estádios V7 e R2. Os tratamentos com fosfito e ASM receberam uma aplicação do fungicida piraclostrobina + epoxiconazole (66,5 + 25 g i.a. ha -1 ) no estádio R3 e foram comparados com uma em R2 e duas aplicações do mesmo fungicida, aplicados em R2 e R5.1, e a testemunha. O uso de fosfito e ASM reduziram significativamente a área abaixo da curva de progresso do míldio e não tiveram efeito sobre o oídio e a ferrugem asiática. O maior número de aplicações do fungicida aumentou o controle dos patógenos biotróficos sob maior pressão das doenças. Palavras-chave: Peronospora manshurica, Phakopsora parchyrhizi, oídio. ABSTRACT Phosphite sources and acibenzolar-S-methyl associated to fungicides on the control of foliar diseases in soybeanThe goal of this study was to evaluate commercial sources of phosphite and acibenzolar-S-methyl (ASM) followed by one fungicide application on the control of downy mildew, powdery mildew and asian soybean rust, reducing the number of fungicide applications and increasing the control spectrum of these soybean diseases. Two field experiments were carried out in Ponta Grossa, Paraná state, Brazil, during the 2006/07 and 2007/08 growing seasons. The experimental design was of randomized blocks with four replications. Treatments consisted on five sources of potassium phosphite and one of manganese (450 g P 2 O 5 ha -1 ) and ASM (12.5 g a.i. ha -1 ) sprayed at the V7 and R2 stages. Phosphite-and ASM-treated plants received one application of the fungicide piraclostrobine + epoxiconazol (66.5 + 25 g i.a. ha -1 ) at the R3 stage and were compared to plants which received two fungicide applications at the R2 and R5.1 stages, as well as to untreated plants. The use of phosphite and ASM significantly reduced the AUDPC for downy mildew. No effects were observed for powdery mildew and Asian rust. The higher number of fungicide application increased the control of biotrophic fungi under higher disease pressure.

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“…The use of nutritive solutions or of resistance inducers can also be an alternative as method to increase the plants resistance to diseases and to prolong the postharvest durability of the vegetal materials (FINGER et al, 2004;DANNER et al, 2008;DALLAGNOL et al, 2006).…”

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confidence: 99%

Conservation of post-harvest leaves of green onion (Allium fistulosumL.) with the use of salicylic acid solution

Freddo

Cechin

Mazaro

2013

Revista Brasileira De Tecnologia Aplicada Nas Ciências Agrárias

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The green onion (Allium fistulosum) is a plant belonging to the family of the Aliaceae, which is used as condiment and seasoning. Its postharvest durability is very short, mainly due to its high metabolic rate and high water content, coupled with poor techniques of management and transport to the consumer. The salicylic acid is an inducer of resistance which acts antagonistically to the ethylene biochemical route, delaying the senescence of plants. The study aimed to evaluate the effect of salicylic acid on post-harvest conservation of green onions leaves. It were used five treatments in a completely randomized design and the treatments consisted of four concentrations of salicylic acid (1μM, 2μM; 8μM and 4mm) and the control (distilled water), in four replicates of ten leaves. After the harvest, selection and standardization of the samples, the bases of the green onions leaves were immersed in solutions with the different treatments for thirty minutes. The leaves were kept in a BOD incubator for seven days at a temperature of 10°C. The variables used for evaluation of the experiment were: weight loss, chlorophyll a, b and total, coloration, rottenness, protein content and activity of the phenylalanine ammonia-lyase enzyme. The obtained results showed that the mass loss was significant, with linear descending behavior with the increase of concentrations, up to five days after treatment application, as well as the decay of leaves, which obtained a quadratic behavior, on the seventh day, therefore demonstrating potential form of salicylic acid in the improvement of post-harvest conservation of green onions.

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Utilização de Acibenzolar-S-Methyl para controle de doenças foliares da soja

Cited by 19 publications

References 5 publications

Leaf gas exchange and chlorophyll a fluorescence in soybean leaves infected by Phakopsora pachyrhizi

Leaf gas exchange and chlorophyll a fluorescence in soybean leaves infected by Phakopsora pachyrhizi

Fontes de fosfito e acibenzolar-S-metílico associados a fungicidas para o controle de doenças foliares na cultura da soja

Conservation of post-harvest leaves of green onion (Allium fistulosumL.) with the use of salicylic acid solution

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