By Manuel J. Reigosa, Nuria Pedrol, Luís González
This publication presents the reader suitable information regarding genuine wisdom in regards to the means of allelopathy, protecting all facets from the molecular to the ecological point. designated relevance is given to the physiological and ecophysiological facets of allelopathy. numerous ecosystems are studied and methodological issues are taken under consideration in different various chapters. The ebook has been written to be worthwhile either for Ph.D. scholars and for senior researchers, so the chapters comprise all priceless info to be learn through newbies, yet in addition they contain loads of worthy info and dialogue for the initiated.
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Extra resources for Allelopathy: A Physiological Process with Ecological Implications
By microbial action). For this reason, interactions with microorganisms are important in allelopathic problems involving this group of compounds (Blum, 2004). However, these perturbations also lead to alterations in ion balance, plant-water relationships, stomatal function, and rates of photosynthesis and respiration (Einhellig, 2004). 22 Basic pathways for the origin of allelopathic compounds Cinnamic acid is known to be autotoxic to plants of guayule, Parthenium argentatum (Seigler, 1998). Dihydrocinnamic acid inhibits seed germination and growth of a number of plants of the Florida scrub (Fischer et al.
Although the compounds involved are volatile, they may also be sufficiently water soluble, especially in the presence of ursolic acid, to be effective (Weidenhamer et al. 1993). The most effective toxins for Salvia leucophylla were α-pinene, β-pinene, and camphene. Those of Artemisia californica are 1,8-cineole and camphor. Cineole and α-pinene proved to be the most effective for Eucalyptus camaldulensis (Seigler, 1998). 37 David S. Seigler Iridoid monoterpenes Further, it has now been demonstrated that secologanin, a precursor of monoterpenederived indole alkaloids, is derived from the DOXP-pathway (Contin et al.
The aglycones soyasapogenols B and E are capable of inducing haustorium formation in the parasitic plant Agalinus purpurea (Oleszek et al. 1999). Saponins based on soyasapogenols promote growth of wheat. These compounds are common in many plants of the Fabaceae: subfamily Papilionoideae. The most widely studied saponins for allelopathic interactions are those of alfalfa. The saponins of alfalfa (Medicago sativa) consist of at least 30 glycosides based on a variety of triterpenoid nuclei (Bialy et al.
Allelopathy: A Physiological Process with Ecological Implications by Manuel J. Reigosa, Nuria Pedrol, Luís González