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Type: Artigo de periódico
Title: Metal contamination effects on sunflower (Helianthus annuus L.) growth and protein expression in leaves during development
Author: Garcia, JS
Gratao, PL
Azevedo, RA
Arruda, MAZ
Abstract: Metal-ion contamination (Cd, Cu, Pb, and Zn) on sunflower (Helianthus annuus L.) growth and total leaf protein expression were studied in the present work. The height, mass production, and metal distribution (Ca, K, Fe, Mg, Na, and P) in all plant fractions (roots, stems, and leaves) were evaluated. Sunflowers plants contaminated with four metal ions decreases height and mass by 35% and 40%, respectively, compared to control. Significant differences of total protein composition were noted after SDS-PAGE separation. Sunflower proteomics were more affected when 500 mg L-1 of metal ion was added as contaminant of both zinc and mixed ions solution. In these cases, proteins having a molar mass of 14.5, 34.5, and 54.0 kDa were present at a lower level and alterations in enzymatic activities (SOD and GR) were found. Sunflowers plants contaminated with zinc and the mixed ions solution showed some degree of oxidative stress.
Subject: sunflowers
metal stress
Country: EUA
Editor: Amer Chemical Soc
Rights: fechado
Identifier DOI: 10.1021/jf061593l
Date Issue: 2006
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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