Effect of Defoliation on Concentrations of Allelochemicals and Soluble Sugars in Leaves of Weeping Birch (Betula pendula Roth)

被引:2
|
作者
Bakhvalov, S. A. [1 ]
Kukushkina, T. A. [2 ]
Vysochina, G. I. [2 ]
机构
[1] Russian Acad Sci, Inst Anim Systemat & Ecol, Siberian Branch, Novosibirsk 630091, Russia
[2] Russian Acad Sci, Cent Siberian Bot Garden, Siberian Branch, Novosibirsk 630090, Russia
基金
俄罗斯基础研究基金会;
关键词
birch defoliation; dynamics of soluble sugars and phenols; flavonols; catechins; tannins; allelochemicals; GYPSY-MOTH LEPIDOPTERA; INSECT; LYMANTRIIDAE; POPULATION; GROWTH; PINE; RESPONSES; DYNAMICS; DEFENSES;
D O I
10.1134/S1995425510020116
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Effect of strong (75%) and complete (100%) artificial defoliation of weeping birch Betula pendula Roth on the dynamics of soluble sugars and phenols-flavonols, catechins, and tannins in leaves of damaged plants was investigated. Within the first 15 days after strong defoliation of birch, no changes were found in leaf contents of flavonol, catechin, and tannin. The concentration of sugars first increased but, on the 10th day after defoliation, it returned to the normal level. One year after strong defoliation, the lead concentrations of catechins and tannins in damaged trees increased, while the concentrations of flavonols and sugars did not differ from that in leaves of control trees. In two years after strong damage, the increased concentration of tannins was retained, while catechins and sugars remained at the control level. One year after complete (100%) artificial defoliation, the leaf concentrations of flavonols and sugars in damaged plants did not differ from that in control plants, while the leaf concentrations of catechins and tannins exceeded those in control plants. Two years after complete damage, the leaves contained an increased amount of tannins, whereas the amounts of catechins, flavonols, and sugars did not differ from the control levels.
引用
收藏
页码:210 / 214
页数:5
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