PHYSIOLOGICAL DEFENSE REACTIONS OF YOUNG BEECH TREES (FAGUS-SYLVATICA) TO ATTACK BY PHYLLAPHIS-FAGI

被引：8

作者：

GORA, V

KONIG, J

LUNDERSTADT, J

机构：

[1] Institute for Forest Zoology, Georg-August University, D-37077 Göttingen

来源：

FOREST ECOLOGY AND MANAGEMENT | 1994年 / 70卷 / 1-3期

关键词：

FAGUS SYLVATICA; PHYLLAPHIS FAGI; DEFENSE REACTION;

D O I：

10.1016/0378-1127(94)90090-6

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

The physiological reaction to attack by the lachnid Phyllaphis fagi compared with non-infested control plants was examined in whole leaves and leaf phloem of beech (Fagus sylvatica) saplings as well as in beech seedlings cultivated in different nutrient substrates. The colonisation density of the lachnids on beech seedlings increased with improved nutrient supply. However, growth was not depressed to a comparable extent. Defence reactions were found at three hierarchic levels. Infested plants exhibited a strongly decreased amino acid/monosaccharide ratio in the entire leaf and leaf phloem. In addition, secondary plant defence substances were detected in beech saplings and lamma shoot leaves of beech seedlings. A systemic reaction, dependent on the infestation density of the lachnid was observed in the leaf phloem of the beech saplings.

引用

页码：245 / 254

页数：10

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