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| Chechi,Amanda; Ghissi-Mazetti,Valéria Cecília; Zuchelli,Elias; Deuner,Carolina Cardoso; Forcelini,Carlos Alberto; Boller,Walter. |
| ABSTRACT: Asian soybean rust is one of the most destructive diseases that can be found in this crop. It can be largely controlled by fungicide application. The objective was to assess the sensitivity of P. pachyrhizi isolates to fungicides. The tests were performed in a completely randomized design, with six replicates. The sensitivity of twelve isolates to site-specific and multisite fungicides at concentrations of 0.1; 1.0; 10.0, and 100.0 mg L-1, plus a control with absence of fungicide (0.0 mg L-1) was assessed. Soybean leaflets were immersed in the appropriate fungicide solutions, disposed in wet chambers in plastic boxes, and inoculated using each uredinia suspension of P. pachyhrizi (5.0 x 104 uredospores mL-1), separately. Boxes were incubated for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Asian soybean rust; Detached leaf test; Effective concentration; Multisite fungicide; Soybean.. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000100151 |
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| Cruz,Maria Fernanda Antunes da; Rodrigues,Fabrício Ávila; Polanco,Leonora Rodriguez; Curvêlo,Carmen Rosa da Silva; Nascimento,Kelly Juliane Telles; Moreira,Maurílio Alves; Barros,Everaldo Gonçalves. |
| This study aimed to determine the effect of jasmonic acid (JA), Acibenzolar-S-Methyl (ASM) and calcium silicate (a source of soluble silicon, Si), on the potentiation of soybean resistance to Asian soybean rust (ASR). The ASR severity was significantly reduced on plants sprayed with ASM or supplied with Si in comparison to plants sprayed with JA or deionized water. For chitinases (CHI), significant differences in activity between non-inoculated and inoculated plants sprayed with deionized water or with ASM occurred at 72 hours after inoculation (hai), at 24 and 72 hai when sprayed with JA and at 141 hai when supplied with Si. For β-1,3-glucanases (GLU), significant differences in activity between non-inoculated and inoculated plants sprayed with deionized... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Asian soybean rust; Induction of resistance; Mechanisms of host defense. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000200008 |
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| Rincão,Michelle Pires; Carvalho,Mayra Costa da Cruz Gallo de; Nascimento,Leandro Costa; Lopes-Caitar,Valéria S.; Carvalho,Kenia de; Darben,Luana M.; Yokoyama,Alessandra; Carazzolle,Marcelo Falsarella; Abdelnoor,Ricardo Vilela; Marcelino-Guimarães,Francismar Correa. |
| Abstract Asian soybean rust (ASR) is one of the most destructive diseases affecting soybeans. The causative agent of ASR, the fungus Phakopsora pachyrhizi, presents characteristics that make it difficult to study in vitro, limiting our knowledge of plant-pathogen dynamics. Therefore, this work used leaf lesion laser microdissection associated with deep sequencing to determine the pathogen transcriptome during compatible and incompatible interactions with soybean. The 36,350 generated unisequences provided an overview of the main genes and biological pathways that were active in the fungus during the infection cycle. We also identified the most expressed transcripts, including sequences similar to other fungal virulence and signaling proteins. Enriched P.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Asian soybean rust; Multigenic families; Transposable elements. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000400671 |
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| Lourdes Rocha,Carla Maria; Vellicce,Gabriel Ricardo; García,María Gabriela; Pardo,Esteban Mariano; Racedo,Josefina; Perera,María Francisca; de Lucía,Adrian; Gilli,Javier; Bogado,Noelia; Bonnecarrère,Victoria; German,Silvia; Marcelino,Francismar; Ledesma,Fernando; Reznikov,Sebastián; Ploper,Leonardo Daniel; Welin,Bjorn; Castagnaro,Atilio Pedro. |
| Background Asian soybean rust (SBR) caused by Phakopsora pachyrhizi Syd. & Syd., is one of the main diseases affecting soybean and has been reported as one of the most economically important fungal pathogens worldwide. Knowledge of the genetic diversity of this fungus should be considered when developing resistance breeding strategies. We aimed to analyze the genetic diversity of P. pachyrhizi combining simple sampling with a powerful and reproducible molecular technique. Results We employed Amplified Fragment Length Polymorphism (AFLP) technique for the amplification of P. pachyrhizi DNA extracted from naturally SBR-infected plants from 23 production fields. From a total of 1919 markers obtained, 77% were polymorphic. The high percentage of... |
| Tipo: Journal article |
Palavras-chave: Asian soybean rust; Genetic variation; Glycine max; Molecular markers. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000600009 |
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