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Articles by M.P. Maleia
Total Records ( 2 ) for M.P. Maleia
  A.K.S. Lobato , R.C.L. Costa , M.A.M. Neto , C.F. Oliveira Neto , B.G. Santos Filho , G.A.R. Alves , K.C. Costa , L.I. Silva , T.V. Conrado and M.P. Maleia
  The aim of the study was to investigate the consequences provoked by the water deficit on nitrogen compounds in Capsicum annuum L. (cv. Vermelho Gigante) plants. The experimental design used was entirely randomized, with 2 water regimes (control and stress), as well as it was composed by 5 repetitions. The free ammonium levels suffered significant interference, as well as the control and stress treatments presented 25.9 and 20.1 μmol NH4+/g/DM, respectively. The proline level was significantly increased at 121.8%, when compared with control plants. The glycinebetaine level in stress plants presented significant increase at 39.8%. The total soluble proteins were in control and stress treatments were 5.72 and 3.89 mg/g/DM, respectively. The study revealed that the water deficit of 6 days was sufficient to provoke changes in all the nitrogen compounds evaluated, in which the reduction in amount of free ammonium is due to lower nitrogen influx and decrease of the total soluble proteins is promoted by the protease enzyme action. However, the proline and glycinebetaine levels in stress plants were showed accumulations, due to process of plant osmotic adjustment.
  A.K.S. Lobato , M.A.M. Neto , A.C.S. Meirelles , L.I. Silva , C.A. Marochio , E.R. Monteiro , H. Zeni Neto , M.P. Maleia , L.D. Moiana , A.R. Bronzato and F.J.R. Cruz
  The aim of this study was to evaluate the impact of short water deficit on nitrate reductase activity and nitrogen contents in Glycine max plants (cv. Sambaiba), as well as to investigate the hypothesis that leaf relative water content exercises influence on total soluble proteins. Experimental design used was completely randomised, with 2 treatments (control and stress). Water deficiency promoted significant decrease on leaf relative water content in stress treatment. For nitrate reductase activity the period of 2 under water deficit provoked a reduction at 45% in stressed plants. In total soluble proteins the control and stress treatments presented 10.0 and 7.7 mg g-1 DM, respectively. The correlation analysis indicates that there is a positive and significant relationship between leaf relative water content and total soluble proteins (r = 0.88; p<0.01). This study revealed that Glycine max induced to short water deficiency presented significant decreases in leaf relative water content, nitrate reductase and total soluble proteins. Furthermore, total soluble amino acids also suffered significant disorders. In addition, the results obtained confirmed the hypothesis that leaf relative water content exercises influence on total soluble proteins.
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