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

By Manuel J. Reigosa, Nuria Pedrol, Luís González

ISBN-10: 1402042795

ISBN-13: 9781402042799

ISBN-10: 1402042809

ISBN-13: 9781402042805

This e-book offers the reader appropriate information regarding genuine wisdom in regards to the technique of allelopathy, masking all points from the molecular to the ecological point. precise relevance is given to the physiological and ecophysiological points of allelopathy. a number of ecosystems are studied and methodological concerns are taken under consideration in different diversified chapters. The ebook has been written to be priceless either for Ph.D. scholars and for senior researchers, so the chapters comprise all important info to be learn by means of rookies, yet additionally they contain loads of invaluable details and dialogue for the initiated.

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Additional resources for Allelopathy: A Physiological Process with Ecological Implications

Sample text

A series of compounds from both the C6C3- and C6C1-series have been isolated from chamise, Adenostoma fasciculatum and from madrone, Arbutus species. These compounds inhibit the germination and growth of many plants of the California chaparral community. Compounds such as vanillic acid and syringic acid generally have the same properties as C6C3-compounds (Einhellig, 2004). Salicylic acid is sometimes a component of allelopathic phenolic mixtures (Buchanan et al. 2000; Seigler, 1998). Salicylic acid can retard senescence of petals, induce flowering, and is involved in disease resistance in plants (Raskin, 1995).

Excretion of (-)-catechin by Centaurea maculosa, knapweed, exhibits negative root-root communication (Veluri et al. 2004; Walker et al. 2003). However, (+)-catechin was inhibitory to soil-borne bacteria. A mixture of the two compounds is excreted from the plant roots (Veluri et al. 2004). The biosynthetic process leading to formation of (-)-catechin is not known. The dimer propelargonidin and the corresponding monomer afzelachin inhibit growth of rice seedlings and may be responsible for limited growth of peach seedlings (Ohigashi et al.

01 mM or more (Yamane et al. 1992). Plants of Brassica napus, rapeseed, release glucosinolates that break down to yield allyl isothiocyanate, a compound known to have strong antibiotic properties (Choesin and Boerner, 1991). Rape plants capable of producing allyl glucosinolate suppressed growth of competing alfalfa (Medicago sativa) plants. In other studies, the isothiocyanates from the turnip, Brassica rapa, inhibited seed germination of a number of weedy species (Petersen et al. 2001). 34 Basic pathways for the origin of allelopathic compounds Incorporation of cruciferous plant material into oil suppresses a number of plant pests.

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


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