Mechanisms of tolerance to herbivore damage: what do we know?

Authors
Citation
P. Tiffin, Mechanisms of tolerance to herbivore damage: what do we know?, EVOL ECOL, 14(4-6), 2000, pp. 523-536
Citations number
69
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Environment/Ecology
Journal title
EVOLUTIONARY ECOLOGY
ISSN journal
0269-7653 → ACNP
Volume
14
Issue
4-6
Year of publication
2000
Pages
523 - 536
Database
ISI
SICI code
0269-7653(2000)14:4-6<523:MOTTHD>2.0.ZU;2-I
Abstract
Identifying mechanisms of tolerance to herbivore damage will facilitate att empts to understand the role of tolerance in the evolutionary and ecologica l dynamics of plants and herbivores. Investigations of the physiological an d morphological changes that occur in plants in response to herbivore damag e have identified several potential mechanisms of tolerance. However, it is unlikely that all physiological changes that occur following damage are to lerance mechanisms. Few studies have made direct comparisons between the ex pression of tolerance and the relative expression of putative mechanisms. I briefly review empirical evidence for some of the better-studied potential mechanisms, including increased photosynthetic activity, compensatory grow th, utilization of stored reserves, and phenological delays. For each of th ese mechanisms I discuss reasons why the relationship between tolerance and these characters may be more complicated than it first appears. I conclude by discussing several empirical approaches, including herbivore manipulati ons, quantitative trait loci (QTL) analysis, and selection experiments, tha t will further our understanding of tolerance mechanisms.