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Biochemical specifics of English oak trees with dry crown
- Polyakova, L. V., Gamayunova, S. G., Zhurova, P. T., Litvinenko, V. I.
- Contemporary problems of ecology 2015 v.8 no.7 pp. 885-891
- Altica, Erannis, Quercus robur, drying, flavonols, leaves, pests, proanthocyanidins, proteins, secondary metabolites, tannins, trees
- Trees of the 56-year old oak stand, including those having dry crown and lacking desiccation features, have been tested biochemically. Neighboring 200to 300-year-old trees lacking drying crown features served as the control. We focused the study on protein contents in leaves and chose flavonols and tannins out of secondary metabolites. The higher activity of dominant pests Altica quercetorium and Erannis defoliaris in the stand has been shown to be related to lower proteins and condensed tannins concentration when compared with old trees.