Data/hora: 25/06/2024 05:49:02

Biblioteca(s): | Embrapa Semiárido.
Data corrente: | 21/03/2017
Data da última atualização: | 21/03/2017
Autoria: | MONTEIRO, A. C. A.; RESENDE, M. L. V. de; VALENTE, T. C. T.; RIBEIRO JUNIOR, P. M.; PEREIRA, V. F.; COSTA, J. R. da; SILVA, J. A. G. da.
Afiliação: | ANA CRISTINA ANDRADE MONTEIRO, Universidade Federal de Lavras; MÁRIO LÚCIO VILELA DE RESENDE, Universidade Federal de Lavras; THAÍS CAINÃ TEIXEIRA VALENTE, Universidade Federal de Lavras; PEDRO MARTINS RIBEIRO JUNIOR, CPATSA; VANESSA FORESTI PEREIRA, Universidade Federal de Lavras; JOSINEIDE RODRIGUES DA COSTA, Universidade Federal de Lavras; JOYCE ALVES GOULART DA SILVA, Universidade Federal de Lavras.
Título: | Manganese phosphite in Coffee defence against Hemileia vastatrix, the coffee rust fungus: biochemical and molecular analyses.
Ano de publicação: | 2016
Fonte/Imprenta: | Journal of Phytopathology, v. 164, p. 1043-1053, 2016.
DOI: | 10.1111/jph.12525
Idioma: | Inglês
Conteúdo: | Phosphites (Phi) are inorganic salts of phosphorous acid that have been used as resistance elicitors to activate mechanisms underlying plant defence. This study assessed the effectiveness of manganese phosphite (MnPhi) for the management of rust (Hemileia vastatrix) on coffee seedlings. The effect of this compound on the induction of resistance was also measured by the expression of defence-related genes such as POX (peroxidase), CAT (catalase), GLU (b-1.3-glucanase) and PAL (phenylalanine ammonia-lyase) and by the activity of defence enzymes such as ascorbate peroxidase (APX), superoxide dismutase (SOD) and polyphenol oxidase (PPO). Foliar sprayings of MnPhi on coffee seedlings provided 63% control of rust severity. This compound induced defence responses in seedlings with increased transcription of genes POX, CAT, GLU and PAL in non-inoculated plants and increased activity of APX, SOD and PPO enzymes in plants inoculated with H. vastatrix and in non-inoculated plants. It is suggested that MnPhi can induce resistance in coffee seedlings.
Palavras-Chave: | Enzymatic activity; Ferrugem do café; Resistance elicitor; Rust.
Thesagro: | Café; Coffea Arábica; Fungo.
Thesaurus Nal: | Gene expression.
Categoria do assunto: | H Saúde e Patologia
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/157924/1/Pedro-2-2016.pdf
Registro original: | Embrapa Semiárido (CPATSA)
Exemplares: | CPATSA - (56514-1) - UPC - AP - DD -  -  -  - DIS