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Hokkaido University Collection of Scholarly and Academic Papers >
Field Science Center for Northern Biosphere >
Eurasian journal of forest research >
Vol.13-2 >
Plant Defense Characteristics and Hypotheses in Birch Species
| Title: | Plant Defense Characteristics and Hypotheses in Birch Species |
| Authors: | Novriyanti, Eka Browse this author | | Aoyama, Chiho Browse this author | | Watanabe, Makoto Browse this author →KAKEN DB | | Koike, Takayoshi Browse this author →KAKEN DB |
| Keywords: | Birch (Betula) | | chemical defense | | physical defense | | trade-off relation | | proposed defense models |
| Issue Date: | Dec-2010 |
| Publisher: | Hokkaido University Forests, EFRC |
| Journal Title: | Eurasian Journal of Forest Research |
| Volume: | 13 |
| Issue: | 2 |
| Start Page: | 77 |
| End Page: | 85 |
| Abstract: | Birches employ defense when under pressure, either biotic or abiotic or both. They have at least three types of defense against herbivores, involving physical, chemical and phenological strategies, whether the defense is constitutive or induced. Leaves usually use both types of defense, whereas woody parts (stems, branches, or twigs) deploy mostly chemical defense. Other studies scarcely differentiate between proposed plant defense models such as CNBH and GDBH, and the defensive responses of birches, since there is a large variation in defensive responses. The evidence supports neither the carbon-nutrient balance (CNB) nor the growth-differentiation balance (GDB) hypothesis in birch defense, indicating that defense is genetically regulated. In our review, we may conclude that birches deploy their various defenses in parallel, since these derive from distinct chemical and physical mechanisms. |
| Type: | bulletin (article) |
| URI: | http://hdl.handle.net/2115/44673 |
| Appears in Collections: | Eurasian journal of forest research > Vol.13-2
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