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	Provedor de dados Braz. J. Plant Physiol. (1) Autor Silveira,Joaquim Albenísio Gomes (1) Viégas,Ricardo Almeida (1) Palavra-chave Anacardium occidentale (1) Enzymes (1) NADH (1) Nitrate metabolism (1) Nitrate reductase (1) Tipo do documento Info:eu-repo/semantics/article (1) Ano 2002 (1) País Brazil (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Activation of nitrate reductase of cashew leaf by exogenous nitrite Braz. J. Plant Physiol. Viégas,Ricardo Almeida; Silveira,Joaquim Albenísio Gomes. Nitrate reductase (NR) plays a central role in plant primary metabolism and exhibits complex regulation mechanisms for its catalytic activity. There is controversy in the literature concerning the possible direct effect of NO2- on the stimulation and/or activation of NR activity. The influence of NO2- was studied on the NR activity in the leaves of 30-day-old cashew (Anacardium occidentale L.) seedlings. Addition of NO2- to the reaction mixture containing leaf enzymatic extract resulted in a remarkable increase in NR activity. A trace amount (5 mumol.L-1) of NO2- was required to achieve full NR activity. The in vitro NR-activity showed a steady time-dependent increase when incubated in the presence of only NO3- + NO2-. In contrast, in vitro NR activity was... Tipo: Info:eu-repo/semantics/article Palavras-chave: Anacardium occidentale; Enzymes; NADH; Nitrate metabolism; Nitrate reductase. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202002000100005 Registros recuperados: 1 Primeira ... 1 ... Última

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