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Potential allelochemicals from Ruta graveolens L. and their action on radish seeds

Aliotta, G. (Universita Federico II, Napoli, Italy) ; Cafiero, G ; De Feo, V ; Sacchi, R

Journal of chemical ecology, 1994-11, Vol.20 (11), p.2761-2775 [Periódico revisado por pares]

New York, NY: Springer

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Título:
Potential allelochemicals from Ruta graveolens L. and their action on radish seeds
Autor: Aliotta, G. (Universita Federico II, Napoli, Italy) ; Cafiero, G ; De Feo, V ; Sacchi, R
Assuntos: ALELOPATIA ; ALLELOPATHIE ; Animal and plant ecology ; Animal, plant and microbial ecology ; Biological and medical sciences ; COMPOSICION QUIMICA ; COMPOSITION CHIMIQUE ; COUMARINE ; CUMARINAS ; Demecology ; DORMANCE ; DORMICION ; FOTOINHIBICION ; Fundamental and applied biological sciences. Psychology ; Generalities, botany, ecology, damages, economic importance ; GERMINACION ; GERMINATION ; Parasitic plants. Weeds ; PHOTOINHIBITION ; Phytopathology. Animal pests. Plant and forest protection ; Plants and fungi ; RAPHANUS SATIVUS ; RUTA GRAVEOLENS ; Weeds
É parte de: Journal of chemical ecology, 1994-11, Vol.20 (11), p.2761-2775
Notas: F60
F40
9539062
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
Descrição: An aqueous extract of Ruta graveolens L. (250 g/liter) was tested for its allelopathic activity in vitro on radish germination and radicle growth in light and darkness. It caused a delay in the onset and a decrease in the rate of germination (40%) in the light. The photoinhibition of germination was accompanied by an inhibition of water uptake into the seed. Furthermore, the inhibition of radicle growth was slightly higher in the light than in darkness. Three potential allelochemicals, biologically active m the light, were isolated from the extract: 5-methoxypsoralen (5-MOP), 8-methoxypsoralen (5-MOP), and 4-hydroxy-coumarin at concentrations of 10(-4) M, 2 X 10(-4) M, and 0.4 X 10(-5) M respectively. At a concentration of 2 X 10(-4) M, 5-MOP was the most potent inhibitor, decreasing radish germination to 32 % and radicle growth to 17% with respect to control. Microscopic observations of radish seeds treated with 5-MOP suggest that this substance changes the swelling of the seed coat and aleurone layer, which precedes radicle protrusion
Editor: New York, NY: Springer
Idioma: Inglês

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Potential allelochemicals from Ruta graveolens L. and their action on radish seeds

Aliotta, G. (Universita Federico II, Napoli, Italy) ; Cafiero, G ; De Feo, V ; Sacchi, R

New York, NY: Springer

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