The effects of lead stress on the dynamic changes of protein secondary structure and differential protein expression of sunflower seedlings in soil were studied using Fourier transform infrared spectroscopy (FTIR) and two-dimensional (2D) electrophoresis. Under lead stress treatment, the alpha-helices and beta-sheets of protein secondary structure for sunflower seedlings were changed. The content changes, 110% increased in alpha-helices of roots and 40% declined in beta-sheets of leaves, were observed, respectively. Furthermore, 11 differential protein spots were obtained by analyzing 2-DE gel images, while No. 9 were identified by MALDI-TOF/TOF MS, successfully.
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Univ Buenos Aires, Fac Farm & Bioquim, Dept Quim Biol, RA-1113 Buenos Aires, DF, ArgentinaUniv Buenos Aires, Fac Farm & Bioquim, Dept Quim Biol, RA-1113 Buenos Aires, DF, Argentina
Pena, Liliana B.
Pasquini, Laura A.
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Univ Buenos Aires, Fac Farm & Bioquim, Dept Quim Biol, RA-1113 Buenos Aires, DF, ArgentinaUniv Buenos Aires, Fac Farm & Bioquim, Dept Quim Biol, RA-1113 Buenos Aires, DF, Argentina
Pasquini, Laura A.
Tomaro, Maria L.
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Univ Buenos Aires, Fac Farm & Bioquim, Dept Quim Biol, RA-1113 Buenos Aires, DF, ArgentinaUniv Buenos Aires, Fac Farm & Bioquim, Dept Quim Biol, RA-1113 Buenos Aires, DF, Argentina
Tomaro, Maria L.
Gallego, Susana M.
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Univ Buenos Aires, Fac Farm & Bioquim, Dept Quim Biol, RA-1113 Buenos Aires, DF, ArgentinaUniv Buenos Aires, Fac Farm & Bioquim, Dept Quim Biol, RA-1113 Buenos Aires, DF, Argentina