HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Field Science Center for Northern Biosphere >
Eurasian journal of forest research >
Vol.13-2 >

Induced Defense in Japanese White Birch Seedlings against Insect Herbivores

Files in This Item:
EJFR13-2_002.pdf207.04 kBPDFView/Open
Please use this identifier to cite or link to this item:

Title: Induced Defense in Japanese White Birch Seedlings against Insect Herbivores
Authors: Aoyama, Chiho Browse this author
Novriyanti, Eka Browse this author
Koike, Takayoshi Browse this author →KAKEN DB
Keywords: White birch
induced defense
gypsy moth
mechanical damage
nitrogen condition
Issue Date: Dec-2010
Publisher: Hokkaido University Forests, EFRC
Journal Title: Eurasian Journal of Forest Research
Volume: 13
Issue: 2
Start Page: 49
End Page: 55
Abstract: Plants defend themselves against herbivores, pests and abiotic stresses. Although some defense traits in plants are constitutive, some are switched on, or increased, only when the plants have suffered from stresses (i.e. induced defense). Growth (i.e. lignin) and the synthesis of most defensive compounds in broad-leaved trees derive from phenylalanine. If, therefore, plants allocate photosynthates mainly to defense, these resources would not be available for growth (lignin synthesis). In this study, we examined the defense induced against grazing by the gypsy moth (Lymantria dispar) in seedlings of the white birch (Betula platyphylla var. japonica) grown under two nitrogen levels. We exposed white birch leaves to be grazed by gypsy moths, and we cut the leaves with scissors in early spring. The defenses of white birch seedlings, especially the amount of total phenolics and condensed tannin, were found to be induced by cutting, to extents that were influenced by the soil nitrogen condition. Induced defense of white birch seedlings may depend on the heterophyllous type of shoot development.
Type: bulletin (article)
Appears in Collections:Eurasian journal of forest research > Vol.13-2

Export metadata:

OAI-PMH ( junii2 , jpcoar_1.0 )

MathJax is now OFF:


 - Hokkaido University