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	Provedor de dados Braz. J. Plant Physiol. (2) Autor Sodek,Ladaslav (2) Sousa,Carlos Antônio Ferreira de (1) Thomas,André Luís (1) Palavra-chave Hypoxia (2) N metabolism (2) Alanine (1) Anoxia (1) Fermentation products (1) Glycine max (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2006 (1) 2002 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Amino acid and ureide transport in the xylem of symbiotic soybean plants during short-term flooding of the root system in the presence of different sources of nitrogen Braz. J. Plant Physiol. Thomas,André Luís; Sodek,Ladaslav. The transport of organic N compounds to the shoot in the xylem sap of nodulated soybean plants was investigated in an attempt to better understand the changes in N metabolism under root hypoxia (first 5 days of flooding), with different sources of N in the medium. NO3- is beneficial for tolerance of plants to waterlogging, whereas other N sources such as NH4+ and NH4NO3, are not. Nevertheless, in the presence of NH4+ high levels of amino acids were transported in the xylem, consistent with its assimilation. Some increase in the transport of amino acids was also seen with NO3- nutrition during waterlogging, but not with N-free medium. Ureide transport in the xylem was severely reduced during waterlogging, consistent with impaired N2 fixation under these... Tipo: Info:eu-repo/semantics/article Palavras-chave: Glycine max; Alanine; Hypoxia; N metabolism. Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202006000200010 The metabolic response of plants to oxygen deficiency Braz. J. Plant Physiol. Sousa,Carlos Antônio Ferreira de; Sodek,Ladaslav. Plants, under natural or experimental conditions, can be subject to a range of O2 concentrations from normal (normoxia) through deficient (hypoxia) to total absence (anoxia). Many metabolic processes are affected by O2 deficiency but the most studied events are those related to respiration and metabolism of N. In the absence of a terminal electron acceptor for the electron transport chain, the tricarboxylic acid cycle functions only partially and in both directions. Acidification of the cytosol occurs and pyruvate, the product of glycolysis, is transformed to lactate and ethanol, which represent the main fermentation reactions in plants. Alanine is the third most important product of anaerobic metabolism, resulting from high rates of amino acid... Tipo: Info:eu-repo/semantics/article Palavras-chave: Anoxia; Hypoxia; N metabolism; Fermentation products. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202002000200002 Registros recuperados: 2 Primeira ... 1 ... Última

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