Results 171 to 180 of about 15,556 (212)

Allelochemicals fromPilocarpus goudotianus leaves

Journal of Chemical Ecology, 1993
The effect on germination, shoot, and root growth by bergapten, xanthotoxin, imperatorin, xanthyletin, xanthoxyletin, luvangetin, donatin and alloxanthoxyletol fromPilocarpus goudotianus leaves, onLactuca sativa var. nigra seedlings has been evaluated. A structure-activity correlation is discussed based on the bioassay results.
F A, Macías, J C, Galindo, G M, Massanet, F, Rodriguez-Luis, E, Zubia   +4 more
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Sesquiterpene Lactones as Allelochemicals

Journal of Natural Products, 2006
Six new sesquiterpene lactones, annuolide H (3), helivypolides F, H-J (4, 11-13), and helieudesmanolide A (6), together with known compounds, were isolated from polar bioactive fractions of Helianthus annuus cv. SH-222 and Stella fresh leaf water extracts.
Macias, Francisco A., Fernandez, Adriana, Varela, Rosa M., Molinillo, Jose M. G., Torres, Ascension, Alves, Pedro L. C. A.   +5 more
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Potential allelochemicals from Sambucus nigra

Phytochemistry, 2001
Twenty-four aromatic metabolites belonging to cyanogenins, lignans, flavonoids, and phenolic glycosides were obtained from Sambucus nigra. Structures were determined on the basis of their spectroscopic features. Two compounds have been isolated and identified as (2S)-2-O-beta-D-glucopyranosyl-2-hydroxyphenylacetic acid and benzyl 2-O-beta-D ...
D'ABROSCA, Brigida, DELLA GRECA M, FIORENTINO, Antonio, MONACO, Pietro, PREVITERA L, SIMONET AM, ZARRELLI A.   +6 more
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Potential allelochemicals fromPistia stratiotes L.

Journal of Chemical Ecology, 1991
Among the substances isolated from ethyl ether extract ofPistia stratiotes L., linoleic acid,γ-linolenic acid, (12R,9Z,13E,15Z)-l2-hydroxy- 9,13,15-octadecatrienoicacid, (9S,10E,12Z,15Z)-9-hydroxy-10,12,15-octadecatrienoic acid, α-asarone, and 24S-ethyl-4,22-cholestadiene-3,6-dione were found to inhibit the growth of some microalgae in solid medium ...
G. Aliotta, P. Monaco, PINTO, GABRIELE, POLLIO, ANTONINO, PREVITERA, LUCIO   +4 more
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Allelochemical Potential of Callicarpa acuminata

Journal of Chemical Ecology, 2003
The allelochemical potential of Callicarpa acuminata (Verbenaceae) was investigated by using a biodirected fractionation study as part of a long-term project to search for bioactive compounds among the rich biodiversity of plant communities in the Ecological Reserve El Eden, Quintana Roo, Mexico.
Ana Luisa, Anaya, Rachel, Mata, James J, Sims, Azucena, González-Coloma, Rocio, Cruz-Ortega, Ana, Guadaño, Blanca E, Hernández-Bautista, Sharon L, Midland, Riselda, Ríos, Arturo, Gómez-Pompa   +9 more
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Fungal allelochemicals in insect pest management

Applied Microbiology and Biotechnology, 2016
Interactions between insects and fungi are widespread, and important mediators of these interactions are fungal chemicals that can therefore be considered as allelochemicals. Numerous studies suggest that fungal chemicals can affect insects in many different ways.
Gerrit, Holighaus, Marko, Rohlfs
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Searching for Rice Allelochemicals

Agronomy Journal, 2001
A bioactivity‐guided isolation method was developed with the objective of isolating the allelochemicals in rice (Oryza sativa L.). Roots of the allelopathic rice cultivar Taichung Native 1, grown hydroponically, were extracted and fractionated, with the activity of the fractions followed using a 24‐well culture plate microbioassay.
Rimando, A. M., Olofsdotter, M., Dayan, F. E., Duke, S. O.   +3 more
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Biological Activity of Allelochemicals

2009
All plants produce compounds that are phytotoxic to another plant species at some concentration. In some cases, these compounds function, at least in part, in plant/plant interactions, where a phytotoxin donor plant adversely affects a target plant, resulting in an advantage for the donor plant.
Franck E. Dayan, Stephen O. Duke
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Allelochemicals fromPolygonum sachalinense Fr. Schm. (Polygonaceae)

Journal of Chemical Ecology, 1992
The root exudates fromPolygonum sachalinense in a recirculating system significantly inhibited lettuce seedling growth. The rhizomes and roots ofP. sachalinense were extracted with 80% acetone. Bioassay of the neutral-acidic fraction on the TLC agar plate showed the inhibitory activity corresponded to the two yellow pigment bands.
M, Inoue, H, Nishimura, H H, Li, J, Mizutani   +3 more
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Ecological Relations (Allelochemicals)

1984
Microorganisms, plants and animals live in a world of chemical signals. These signals, in most cases secondary products, are of special importance in ecology, i.e., the mutual relations between the different groups of organisms, which cause the formation of the characteristic communities of living beings in the forests, meadows, and deserts, in pools ...
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