Download Allelopathy: A Physiological Process with Ecological by Manuel J. Reigosa, Nuria Pedrol, Luís González PDF

By Manuel J. Reigosa, Nuria Pedrol, Luís González

This ebook presents the reader proper information regarding genuine wisdom in regards to the strategy of allelopathy, masking all elements from the molecular to the ecological point. distinctive relevance is given to the physiological and ecophysiological points of allelopathy. numerous ecosystems are studied and methodological concerns are taken under consideration in numerous diversified chapters. The e-book has been written to be beneficial either for Ph.D. scholars and for senior researchers, so the chapters contain all priceless info to be learn via rookies, yet in addition they comprise loads of worthwhile details and dialogue for the initiated.

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Additional resources for Allelopathy: A Physiological Process with Ecological Implications

Sample text

Stilbenes Stilbenes are widespread in nature, although they have been inadequately studied from many plant groups. Most of them seem to have pronounced biological activity. Many are antifungal and some are induced as phytoalexins. Lunularic acid and a series of structurally related stilbenes from Hydrangea species have been shown to have allelopathic activity (Cutler, 1992). Resveratrol and piceatannol from Scirpus maritimus (Cyperaceae) have activity in both plant and animal bioassays. Piceatannol inhibits growth of Lemna (Cutler, 1992).

Ajmalacin, cinchonine, cinchonidine, quinidine, quinine, and strychnine inhibit RNA reverse transcriptase. Ajmaline, cinchonidine, quinidine, quinine, and yohimbine inhibit protein synthesis (Wink et al. 1999). These alkaloids are mainly restricted to the families Apocynaceae, Loganiaceae, and Rubiaceae, but occur in several others in isolated instances (Seigler, 1998). 53 David S. Seigler Other indole alkaloids Although monoterpene-derived indole alkaloids are the most common type in nature, other alkaloids with indole-ring structures are known.

50 Basic pathways for the origin of allelopathic compounds Anthranilic acid-derived alkaloids A series of alkaloids derived from anthranilic acid are important in rue (Ruta graveolens) and other members of the family Rutaceae, but are not common in other families. Among the compounds that may be associated with allelopathy are: Arborine, rutacridone, skimmianine, 6-methoxydictamnine, γ-fagarine, and graveoline. Isoquinoline and benzylisoquinoline alkaloids The isoquinoline and benzylisoquinoline alkaloids are among the most important and largest of alkaloid groups.

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