Quantitative changes in maize cytoplasmic proteins induced by aluminium |
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Authors: | J Huttová L Tamás I Mistrík |
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Institution: | (1) Slovak Academy of Sciences, Dúbravská cesta 14, Institute of Botany, SK-842 23 Bratislava, Slovakia |
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Abstract: | Three-day-old maize seedlings were subjected to 100 μM AlCl3 for 24 h. Cytoplasmic proteins were isolated from root tips,
root base and from coleoptiles. After fractionation of cytoplasmic proteins on anion chromatography column Bio-Scale Q2 sodium
dodecylsulphate polyacrylamide gel electrophoresis (SDS-PAGE) analysis was used to monitor Al-induced changes in polypeptide
composition of particular fractions. Four (root) and 7 (coleoptile) fractions were eluted from the column with linear 0 -
1.0 M NaCl gradient. In fraction 1 of cytoplasmic proteins from root tips Al induced accumulation of polypeptide with molecular
mass of 16 kD and simultaneous reduction of two polypeptides (67.5 and 60 kD). In fraction 1 isolated from mature zone of
maize roots Al-induced accumulation of 22 kD polypeptide and reduction of 67.5, 60, and 14 kD polypeptides. Most pronounced
changes were revealed in coleoptile. In three protein fractions increased accumulation of polypeptides with molecular mass
of 14, 17.5, 20, 24.5, 28, 30, and 37.5 kD were observed. In the remaining three root or four coleoptile fractions of cytoplasmic
proteins, no differences were found between Al-treated and control maize seedlings.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | 3l-induced stress coleoptile polypeptide patterns root Zea mays L |
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