English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/18228
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 12 veces en Web of Knowledge®  |  Pub MebCentral Ver citas en PubMed Central  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Título

Per os efficacy of Ajuga extracts against sucking insects

AutorFekete, Gábor; Polgár, László A.; Báthori, Mária; Coll Toledano, Josep; Darvas, Béla
Palabras claveAcyrthosiphon pisum
Dysdercus cingulatus
Ajuga spp
Phytoecdysteroids
Bioassay
Developmental disorders
Fecha de publicación3-ago-2004
EditorJohn Wiley & Sons
CitaciónPest Management Science 60(11): 1099-1104 (2004)
ResumenWe studied the efficacy of water-soluble extracts from four Ajuga spp on the post-embryonic development of two exopterygota (sucking insect) species. To allow comparison between different Ajuga species, results are expressed in terms of quantity of plant extracted per litre of test solution. Crude methanolic extracts of all Ajuga plants tested, with the exception of A genevensis, showed considerable per os efficacy against larvae of both Dysdercus cingulatus F and Acyrthosiphon pisum (Harris) even at 1 g litre-1. In the aphid tests the order of efficacy was A bracteosa Wallich ex Benth > A chamaepitys Schreber > A reptans L > A genevensis L. On D cingulatus the order of efficacy was: A reptans > A bracteosa > A chamaepitys > A genevensis. Extracts were fractionated on SepPak using a range of methanol/water mixtures. Results are expressed in terms of the initial weight of plant extracted. The 100% methanolic fraction of A chamaepitys was highly effective on A pisum (100% mortality at 1 g litre-1) and less effective on D cingulatus (about 60% mortality at 5 g litre-1). The entire 60 methanol + 40 water fraction was effective against test insects but showed different efficacies according to test species and concentration applied. 20-Hydroxyecdysone (20E), cyasterone (Cy) and ajugalactone (Ajl) were identified in the fractions from all Ajuga species, but the remaining phytoecdysteroid profile was quite different between Ajuga species. Capitasterone (Cap) and 28-epi-sengosterone (5Cy28) were found only in A reptans, makisterone A (MaA) and 29-norcyasterone (29NCy) were only in A chamaepitys, while 22-acetylcyasterone (Cy22A), 3-epi-cyasterone (Cy) and 3-epi-22-acetylcyasterone (Cy22A) were only in A bracteosa. The total amount of phytoecdysteroids was 2053 mg kg-1 for A bracteosa, 1892 mg kg-1 for A reptans and 95 mg kg-1 for A chamaepitys.
Descripción6 pages, 5 figures, 2 tables.-- PMID: 15532684 [PubMed].-- Printed version published Nov, 2004.
Versión del editorhttp://dx.doi.org/10.1002/ps.928
URIhttp://hdl.handle.net/10261/18228
DOI10.1002/ps.928
ISSN1526-498X (Print)
1526-4998 (Online)
Aparece en las colecciones: (IQAC) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo
 



NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.