Abstract
The effect of irradiance on the expression of the Cucumis sativus pathogenesis-related (srPRX) anionic peroxidase was studied in germinating seeds at the period when seedlings start to be photosynthetically active. The diversity in the expression patterns of srPRX was observed in both dark- and light-grown seedlings using activity staining and immunoblotting: beside the three srPRX isoenzymes also other three, serologically unrelated, peroxidase isoforms were accumulated in dark-grown seedlings and one in light-grown seedlings. Furthermore, in light-grown seedlings, it was observed a marked difference in the expression of particular srPRX isoenzymes at higher irradiance (up to 260 W m-2, 400 - 700 nm) in comparison to low irradiance. By tissue printing on nitrocellulose paper it was demonstrated that irradiance during germination induced changes in the temporal and spatial distribution of the srPRX.
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Repka, V., Fischerova, I. Light-induced Changes in Expression of Pathogenesis-related Anionic Peroxidase in Cucumber Seedlings. Biologia Plantarum 40, 605–615 (1997). https://doi.org/10.1023/A:1001765522759
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DOI: https://doi.org/10.1023/A:1001765522759