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The role of root exudates and allelochemicals in the rhizosphere
Recent research onRoot exudation and the role of allelochemicals in the rhizosphere is outlined by studying the case of three plants that have been shown to produce allelopathic root exudates: black walnut, wheat and sorghum.
Utilization of Allelopathy for Weed Management in Agroecosystems
The ability to understand the physiological basis for allelopathy in a crop plant may allow the weed scientist or ecologist to work closely with molecular biologists or traditional plant breeders to selectively enhance the traits responsible for weed suppression.
Phytotoxicity and Distribution of Sorgoleone in Grain Sorghum Germplasm
The relative phytotoxicity of sorgoleone as measured by seed germination and seedling growth of selected crop and weed species and inhibition of photosynthetic oxygen evolution in atrazine-resistan...
Biological Activity of Resveratrol, a Stilbenic Compound from Grapevines, Against Botrytis cinerea, the Causal Agent for Gray Mold
The biological activity of resveratrol, a stilbenic compound synthesized by grapevines in response to various stresses, was reevaluated against Botrytis cinerea using a novel in vitro system that enabled direct observation of the fungus with an inverted microscope to reinforce the role played by this compound in the B. cine Andrea–grapevine interaction.
Weed and Crop Allelopathy
A new challenge that exists for future plant scientists is to generate additional information on allelochemical mechanisms of release, selectivity and persistence, mode of action, and genetic regulation so as to further protect plant biodiversity and enhance weed management strategies in a variety of ecosystems.
Isolation and characterization of allelopathic volatiles from mugwort (Artemisia vulgaris)
Reductions in total terpene concentration with increase in leaf age correlated with decreases in phytotoxicity, which suggests a potential role for terpenoids in mugwort establishment and proliferation in introduced habitats.
Evaluation of Root Exudates of Seven Sorghum Accessions
Seven sorghum accessions were evaluated quantitatively and qualitatively for the composition of their root exudates, lending further support to the concept that Sorghum spp.
Grass roots chemistry: meta-Tyrosine, an herbicidal nonprotein amino acid
It is shown that m-tyrosine exposure results in growth inhibition for a wide range of plant species and proposed that the release of this nonprotein amino acid interferes with root development of competing plants and could lead to the development of biorational approaches to weed control.
Flavonoids: Their Structure, Biosynthesis and Role in the Rhizosphere, Including Allelopathy
Classic examples of flavonoids involvement in autotoxicity and allelopathy are presented and their activity and fate in the soil rhizosphere in selected examples involving pasture legumes, cereal crops, and ferns are described.
Herbicidal Activity and Site of Action of the Natural Product Sorgoleone
Abstract Inhibition of photosynthetic electron transport in isolated spinach ( Spinacea oleracea L.) thylakoids and competitive binding to spinach, redroot pigweed ( Amaranthus retroflexus L.), and