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Influence of GA3 and 4-PU-30 on Leaf Protein Composition, Photosynthetic Activity, and Growth of Maize Seedlings

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Biologia Plantarum

Abstract

The effects of gibberellic acid (GA3) and N1-(2-chloro-4-pyridyl)-N2 phenylurea (4-PU-30) on maize seedling growth, photosynthetic parameters, and leaf protein composition were investigated. The agents used alone or in combination increased leaf growth and photosynthetic rate of the seedlings. Chlorophyll and total nitrogen contents in leaves as well as the quantity of individual protein fractions increased simultaneously. Sodium dodecyl sulfate polyacrylamide gel electrophoresis of soluble proteins (albumins and globulins) revealed quantitative differences between 4-PU-30-treated plants and the other experimental variants. They differed in polypeptide composition associated with changes in soluble proteins and amino acids. However, GA3 did not induce similar changes in polypeptide composition of soluble proteins.

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Authors
  1. B.J. Stefanov
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  2. L.K. Iliev
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  3. N.I. Popova
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Stefanov, B., Iliev, L. & Popova, N. Influence of GA3 and 4-PU-30 on Leaf Protein Composition, Photosynthetic Activity, and Growth of Maize Seedlings. Biologia Plantarum 41, 57–63 (1998). https://doi.org/10.1023/A:1001756315472

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