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Título del libro: Allelopathy: A Physiological Process With Ecological Implications
Título del capítulo: Plant secondary metabolites.Targets and mechanisms of allelopathy

Autores UNAM:
BLAS LOTINA HENNSEN; BEATRIZ KING DIAZ; MARIA ISABEL AGUILAR LAURENTS;
Autores externos:

Idioma:
Inglés
Año de publicación:
2006
Resumen:

Allelopathy is commonly defined as any effect: direct or indirect, stimulatory or inhibitory, mediated by a chemical compound released into the environment by a given plant or microorganism (Rice, 1984). These chemicals, termed secondary metabolites, allelochemicals, natural products or phytogrowth-inhibitors, are a major factor in regulating the structure of plant communities (Smith and Martin, 1994). Allelochemicals can be released into the environment through a variety of mechanisms: volatilization from leaves, exudation from roots, and leaching from fallen leaves and plant litter (Putnam, 1983). The chemical interaction between plants was known for thousands of years, before the term allelopathy was coined by Molish (1937). Thus, Pliny may have been the first to record the allelopathic effects of the walnut tree (Juglans nigra and J. regia). The walnut tree is perhaps the best known allelopathic plant, causing many crops and other plants in its vicinity to wither and die. The leaves, roots, and fruits of the plant produce a hydroquinone (1), which is oxidized in the environment to juglone (2), the compound responsible for the toxic effects on other plants (Kocacaliskan and Terzi, 2001). © 2006 Springer. All Rights Reserved.


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