Título:	Secondary metabolic profiles of two cultivars of Piper nigrum (Black Pepper) resulting from infection by Fusarium solani f. sp. piperis.
Autoria:	LUZ, S. F. M. da YAMAGUCHI, L. F. KATO, M. J. LEMOS, O. F. de XAVIER, L. P. MAIA, J. G. S. RAMOS, A. de R. SETZER, W. N. SILVA, J. K. do R. da
Afiliação:	Shirlley F. M. da Luz, UFPA; Lydia F. Yamaguchi, USP; Massuo J. Kato, USP; ORIEL FILGUEIRA DE LEMOS, CPATU; Luciana P. Xavier, UFPA; José Guilherme S. Maia, UFOPA; Alessandra de R. Ramos, UNIFESSPA; William N. Setzer, University of Alabama; Joyce Kelly do R. da Silva, UFPA.
Ano de publicação:	2017
Referência:	International Journal of Molecular Sciences, v. 18, n. 12, 2434, 2017.
Conteúdo:	Bragantina and Cingapura are the main black pepper (Piper nigrum L.) cultivars and the Pará state is the largest producer in Brazil with about 90% of national production, representing the third largest production in the world. The infection of Fusarium solani f. sp. piperis, the causal agent of Fusarium disease in black pepper, was monitored on the cultivars Bragantina (susceptible) and Cingapura (tolerant), during 45 days? post infection (dpi). Gas Chromatography-Mass spectrometry (GC-MS) analysis of the volatile concentrates of both cultivars showed that the Bragantina responded with the production of higher contents of α-bisabolol at 21 dpi and a decrease of elemol, mostly at 30 dpi; while Cingapura displayed an decrease of δ-elemene production, except at 15 dpi. The phenolic content determined by the Folin Ciocalteu method showed an increase in the leaves of plants inoculated at 7 dpi (Bragantina) and 7?15 dpi (Cingapura); in the roots, the infection caused a phenolic content decrease in Bragantina cultivar at 45 dpi and an increase in the Cingapura cultivar at 15, 30 and 45 dpi. High Performance Liquid Chromatography-Mass spectrometry (HPLC-MS) analysis of the root extracts showed a qualitative variation of alkamides during infection. The results indicated that there is a possible relationship between secondary metabolites and tolerance against phytopathogens.
Thesagro:	Doença Fusarium
Palavras-chave:	Pimenta preta Óleos essenciais
Digital Object Identifier:	10.3390/ijms18122434
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CPATU)