By Manuel J. Reigosa, Nuria Pedrol, Luís González
This booklet presents the reader appropriate information regarding real wisdom concerning the means of allelopathy, overlaying all elements from the molecular to the ecological point. precise relevance is given to the physiological and ecophysiological features of allelopathy. numerous ecosystems are studied and methodological concerns are taken into consideration in numerous varied chapters. The publication has been written to be necessary either for Ph.D. scholars and for senior researchers, so the chapters comprise all helpful info to be learn through rookies, yet in addition they contain loads of beneficial details and dialogue for the initiated.
Read Online or Download Allelopathy: A Physiological Process with Ecological Implications PDF
Similar forestry books
Soil Formation bargains with qualitative and quantitative facets of soil formation (or pedogenesis) and the underlying chemical, organic, and actual techniques. the place to begin of the textual content is the method -- and never soil class. results of weathering and new formation of minerals, mobilisation, shipping, and breakdown or immobilisation of dissolved and suspended compounds are mentioned.
Plantations of quite a lot of tree species have assumed a tremendous position in our global, delivering wooden for undefined, fuelwood and animal fodder, defense from antagonistic environments and for the soil, in addition to amenity and aesthetically interesting landscapes. silvicultural wisdom of this actual department of forestry first built in Europe greater than centuries in the past yet in lots of components of the realm remains to be in a means of swift evolution as progressively more plantations are demonstrated to fulfill particular wishes.
A few first-class textbooks on basic ecology are presently to be had yet‚ thus far‚ none were devoted to the learn of soil ecology. this can be vital as the soil‚ because the ‘epidermis’ of our planet‚ is the foremost element of the terrestrial biosphere. within the current age‚ it really is obscure how you'll be able to have an interest generally ecology with no need a few wisdom of the soil and extra‚ to review the soil with no taking into consideration its organic parts and ecological environment.
This ebook provides the cutting-edge wisdom on bamboo. It begins with an creation to the plant’s biology, its taxonomy, habitat, morphology and development. The cultivation of bamboo is mentioned by way of silviculture, pests and ailments, and harvesting suggestions. The e-book is done by way of a finished presentation of the homes of bamboo, its usage and its protection.
Additional info for Allelopathy: A Physiological Process with Ecological Implications
Alfalfa roots often contain as much as 4-5% saponins. These saponins consist of mono-, bi-, and tridesmosides and have from 2-7 sugar moieties attached. These saponins are responsible for many of the antinutritional aspects of alfalfa, and may also be responsible for the autotoxic effects and allelopathy attributed to this species (Oleszek et al. 1999). When cotton is grown in the same fields following alfalfa crops, the yields are considerably reduced. In other studies, alfalfa root saponins have been shown to be toxic to cotton.
Several fungi have the ability to produce these compounds as well (Buchanan et al. 2000). Tetraterpenes or carotenoids The plant hormone abscisic acid, involved in many plant dormancy interactions, is derived from carotenoid pathways. This compound is produced as a sesquiterpene by several fungi (Seigler, 1998). 39 David S. Seigler Mevalonic acid-derived terpenes The IPP and DMAPP precursors of another large group of terpenes, the sesquiterpenes, triterpenes and steroids, the glycosides of these latter compounds, a series of modified triterpenes found primarily in the Rutaceae, Meliaceae, and Simaroubaceae, and polyterpenes, are derived in plants from mevalonic acid.
Basic pathways for the origin of allelopathic compounds Naphthoquinones The naphthoquinone juglone is one of the best known examples of allelopathic compounds. This compound, mainly from Juglans species (walnuts) has the ability to inhibit growth of many plants and is exuded by the roots, but also liberated by leaves and fruits of the offending plants (Seigler, 1998). Pigmented derivatives of shikonin are produced in root cells of Lithospermum erythrorhizon (Brigham et al. 1999). Contact by hyphae of several species of fungi induced localized production of pigments, but challenge by Rhizoctonia solani increased shikonin production more than 30 times.
Allelopathy: A Physiological Process with Ecological Implications by Manuel J. Reigosa, Nuria Pedrol, Luís González