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Provedor de dados:  Repositório Alice
País:  Brazil
Título:  Manganese phosphite in Coffee defence against Hemileia vastatrix, the coffee rust fungus: biochemical and molecular analyses.
Autores:  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
Data:  2017-03-21
Ano:  2016
Palavras-chave:  Ferrugem do café
Coffea arabica
Café
Fungo
Enzymatic activity
Gene expression
Resistance elicitor
Rust
Resumo:  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.

2016
Tipo:  Artigo em periódico indexado (ALICE)
Idioma:  Inglês
Identificador:  56514

http://www.alice.cnptia.embrapa.br/handle/doc/1067414

http://ainfo.cnptia.embrapa.br/digital/bitstream/item/157924/1/Pedro-2-2016.pdf

10.1111/jph.12525
Editor:  Journal of Phytopathology, v. 164, p. 1043-1053, 2016.
Relação:  Embrapa Semiárido - Artigo em periódico indexado (ALICE)
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