Data/hora: 06/06/2024 11:44:23

Provedor de dados: | 58
País: | Brazil
Título: | Chemical products induce resistance to Xanthomonas perforans in tomato
Autores: | Itako,Adriana Terumi; Tolentino Júnior,João Batista; Silva Júnior,Tadeu Antônio Fernandes da; Soman,José Marcelo; Maringoni,Antonio Carlos.
Data: | 2015-09-01
Ano: | 2015
Palavras-chave: | Solanum lycopersicum; Bacterial spot; Control; Enzymes.
Resumo: | The bacterial spot of tomato, caused by Xanthomonas spp., is a very important disease, especially in the hot and humid periods of the year. The chemical control of the disease has not been very effective for a number of reasons. This study aimed to evaluate, under greenhouse conditions, the efficacy of leaf-spraying chemicals (acibenzolar-S-methyl (ASM) (0.025 g.L−1), fluazinam (0.25 g.L−1), pyraclostrobin (0.08 g.L−1), pyraclostrobin + methiran (0.02 g.L−1 + 2.2 g.L−1), copper oxychloride (1.50 g.L−1), mancozeb + copper oxychloride (0.88 g.L−1 + 0.60 g.L−1), and oxytetracycline (0.40 g.L−1)) on control of bacterial spot. Tomatoes Santa Clara and Gisele cultivars were pulverized 3 days before inoculation with Xanthomonas perforans. The production of enzymes associated with resistance induction (peroxidase, polyphenol oxidase, phenylalanine ammonia-lyase, β-1,3-glucanase, and protease) was quantified from leaf samples collected 24 hours before and 24 hours after chemical spraying and at 1, 2, 4, 6, and 8 days after bacterial inoculation. All products tested controlled bacterial spot, but only ASM, pyraclostrobin, and pyraclostrobin + metiram increased the production of peroxidase in the leaves of the two tomato cultivars, and increased the production of polyphenol oxidase and β-1,3-glucanase in the Santa Clara cultivar.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000300701
Editor: | Sociedade Brasileira de Microbiologia
Relação: | 10.1590/S1517-838246320140177
Formato: | text/html
Fonte: | Brazilian Journal of Microbiology  v.46 n.3 2015
Fonte: | info:eu-repo/semantics/openAccess