The Role of Sucrose in Regulation of Trunk Tissue Development in Betula pendula Roth |
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Authors: | Ludmila L Novitskaya Feodor V Kushnir |
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Institution: | (1) Forest Research Institute, Karelian Research Center of the Russian Academy of Sciences, Pushkinskaya 11, Petrozavodsk, 185910, Russia |
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Abstract: | Comparative ultrastructural analysis of the conducting and non-conducting phloem cells in the common straight-grained silver
birch (Betula pendula var. pendula) and the Karelian birch (B. pendula var. carelica) with abnormal patterned wood was carried out, leading to the conclusion that there is an elevated sucrose content in the
conducting phloem of the Karelian birch. A connection between sucrose levels and formation of abnormalities in the development
of conducting tissues in the Karelian birch trunk was surmised. Experiments in which exogenous sucrose was applied to the
silver birch trunk tissues have demonstrated the effects of different sucrose concentrations (0 g L−1, 10 g L−1, 25 g L−1, 50 g L−1, 100 g L−1) on the formation of xylem and phloem structural elements, and they yielded the types of tissue development that correspond
to the abnormal tissue development in the Karelian birch trunk. |
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Keywords: | Betula pendula Roth Influence of sucrose Trunk tissue development |
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