Ecological Biochemistry: Allelopathy and Defense Against Herbivores

Abstract

Plants contain a vast array of compounds referred to as secondary metabolites that play no role in primary catabolic or biosynthetic pathways. Many of these metabolites influence important ecological interactions (e.g., deterring herbivores, protection against pathogens, allelopathy, symbiotic associations, seed germination of parasites, or interactions with pollinators). Others provide protection against ultraviolet radiation or high temperatures. Some of these roles have already been discussed. This chapter discusses the role of secondary compounds in allelopathic and plant—herbivore interactions. Plant—pathogen interactions are discussed in Chapter 9C.