01983naa a2200445 a 450000100080000000500110000800800410001910000250006024500530008526000090013830000270014752006360017465000110081065000260082165000120084765000130085965000240087265000170089665000120091365000110092565000280093665000120096465000190097665000230099565000290101865000230104765300160107065300110108665300210109765300270111865300250114565300240117065300230119465300220121765300200123970000200125970000170127970000180129677302230131415521352019-02-06       1996    bl uuuu     u00u1 u    #d1 aBUSTAMANTE, M. M. C.  aNitrate assimilation in "Cerrado" woody species.  c1996  ap.302-307.c3 figuras.  aThe actual (without nitrate in the incubation buffer) and potential (with nitrate) nitrate reductase activity (NRA) was measured in leaves of eleven cerrado woody plants through in vivo essay. The actual NRA was lower than the potential activity for all the species, except for Erythoxylim suberosum what indicates that NRA in these species can be substrate limited under field conditions. The potential activity was substantially higher for Dalbergia miscolobium and Pterodon pubescens. The results indicate that the nitrate reduction can be an important aspect of nitrogen nutrition in cerrado woody plants, although low soil pH.  aBrazil  aDalbergia miscolobium  aenzymes  anitrates  anitrogen metabolism  awoody plants  aCerrado  aEnzima  aMetabolismo Nitrogenado  aNitrato  aPlanta Lenhosa  aPterodon Pubescens  aSclerolobium Paniculatum  aStyrax Ferrugineus  aBIBJICACPAC  aBrasil  aDistrito Federal  aErythroxylum suberosum  aKielmeyerca coriacea  aMiconia ferruginata  aOuratea hexasperma  aQualea parviflora  aRoupala montana1 aKOZOVITS, A. R.1 aSILVA, L. F.1 aDUARTE, G. F.  tIn: SIMPOSIO SOBRE O CERRADO, 8.; INTERNATIONAL SYMPOSIUM ON TROPICAL SAVANNAS, 1., 1996, Brasilia, DF. Biodiversidade e producao sustentavel de alimentos e fibras nos Cerrados: anais... Planaltina: EMBRAPA-CPAC, 1996.