EFFECT OF THE SPECTRAL COMPOSITION OF LED LIGHTING ON THE ACTIVITY OF ANTIOXIDANT ENZYMES AND THE DEFEN SIVE PROTEIN CONTENT IN CUCUMBER PLANTS (CUCUMIS SATIVUS L.)
Abstract
Red narrow-band lighting activates superoxide dismutase and phenolic peroxidases in the leaves of cucumber plants. In contrast, blue narrow-band lighting inhibits the activity of these enzymes. Under the combined action of red and blue light the negative effect of blue light on the activity of superoxide dismutase and phenolic peroxidases is partially eliminated while the use of red, blue, light-blue, and yellow light at the same time normalizes its functioning almost completely. It is found that blue and red narrow-band lighting increases the stress protein HSP70 content to almost the same extent and decreases (especially blue light) the expression level of antimicrobial protein PR-1. The results obtained should be considered during development and practical usage of LED illuminators for the plant growing.
About the Authors
Y. V. VIAZAU
Институт биофизики и клеточной инженерии НАН Беларуси, Минск
Belarus
Belarus
N. V. SHALYGO
Институт биофизики и клеточной инженерии НАН Беларуси, Минск
Belarus
Belarus
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