Pàgina inicial > Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències de la salut i biociències > Grup de Recerca en Ecologia Química i Toxicologia > Resultats de la cerca

Grup de Recerca en Ecologia Química i Toxicologia

  Consells de cerca
Cerca avançada
Cerca col·leccions:
Ordena'ls per: Mostrar els resultats: Format de visualizació:
Grup de Recerca en Ecologia Química i Toxicologia 26 registres trobats  anterior11 - 20següent  anar al registre: La cerca s'ha fet en 0.00 segons. 
11.
37 p, 724.7 KB Decrease in the diversity of pyrrolizidine alkaloids of Senecio pterophorus after invasion / Sánchez González, Alejandro ; Castells, Eva, tut. ; Universitat Autònoma de Barcelona. Facultat de Biociències
Pyrrolizidine alkaloids (PAs) are N-based plant secondary metabolites that function as chemical defenses against vertebrate and invertebrate herbivores. PAs can be highly variable at intraspecific level, both in their absolute and relative concentrations. [...]
2014  
Registre complet - Creative Commons
12.
3 p, 896.5 KB Són les plantes invasores més tòxiques que les natives? / Castells, Eva (Universitat Autònoma de Barcelona. Departament de Farmacologia, de Terapèutica i de Toxicologia)
Les plantes invasores poden modificar la composició, l'estructura i el funcionament dels ecosistemes que colonitzen i sembla que podrien canviar la seva pròpia composició química i toxicitat. Per tal d'esbrinar si es produeixen aquests darrers canvis, el grup d'Ecologia Química i Toxicologia de la UAB ha analitzat la concentració de certes molècules de l'arbust Senecio pterophorus que són tòxiques per a organismes invertebrats i vertebrats en plantes recol·lectades a la seva zona nativa i en tres regions on s'ha convertit en espècie invasora.
Las plantas invasoras pueden modificar la composición, la estructura y el funcionamiento de los ecosistemas que colonizan y parece que podrían cambiar su propia composición química y toxicidad. Para averiguar si se producen estos últimos cambios, el grupo de Ecología Química y Toxicología de la UAB ha analizado la concentración de ciertas moléculas del arbusto Senecio pterophorus que son tóxicas para organismos invertebrados y vertebrados en plantas recolectadas en su zona nativa y en tres regiones donde se ha convertido en especie invasora.
Exotic plants can strongly affect the composition, structure and functioning of the invaded ecosystems and it seems that they are able to change their own chemical composition and toxicity. To determine whether these changes actually take place, the Chemical Ecology and Toxicology group at the UAB analysed the concentration of certain molecules of the Senecio pterophorus shrub toxic to vertebrates and invertebrates in plants collected in their native environment and in three non-native environments.
2015
UAB divulga, Maig 2015
3 documents
Registre complet - Creative Commons
13.
1 p, 308.8 KB Z-ocimene, but not alkaloids, deters oviposition of the specialist moth Agonopterix alstroemeriana on Conium maculatum (Apiaceae) / Castells, Eva (Universitat Autònoma de Barcelona. Departament de Farmacologia, de Terapèutica i de Toxicologia) ; Berenbaum, May
Conium maculatum (Apiaceae), a Eurasian weed naturalized in North America, contains high concentrations of piperidine alkaloids, such as γ-coniceine, coniine and conhydrinone, that are toxic for livestock and humans and might also confer resistance against phytophagous insects. [...]
2007
Annual Meeting International Society of Chemical Ecology. Jena, Germany, 23è : 2007  
Registre complet - Creative Commons
14.
1 p, 109.6 KB Genetic variation of alkaloid production in Conium maculatum after reassociation with the specialist moth Agonopterix alstroemeriana / Castells, Eva (Universitat Autònoma de Barcelona. Departament de Farmacologia, de Terapèutica i de Toxicologia) ; Berenbaum, May
Studies in biological control and invasion biology rarely determine whether introduced plants may rapidly evolve in the area of introduction. Examining the evolution of plant chemical defenses after reassociation with a coevolved enemy is important not only to understand the dynamics of plant-herbivore interactions but also in predicting potential ultimate outcomes of classical weed control programs. [...]
Total alkaloid production in C. maculatum was positively correlated with reassociation time between C. maculatum and A. alstroemeriana, with the longest historical association with A. alstroemeriana (NY) had highest alkaloid content; WA plants were intermediate, with the highest amount of variability among sites, and IL plants had lowest alkaloid concentrations. [...]
2006
Annual Meeting International Society of Chemical Ecology. Barcelona, Catalunya, 22è : 2006  
Registre complet - Creative Commons
15.
71.9 KB Contemporary evolution of an invasive plant is associated with climate but not with herbivory / Castells, Eva (Universitat Autònoma de Barcelona. Departament de Farmacologia, de Terapèutica i de Toxicologia) ; Colomer Ventura, Ferran (Universitat Autònoma de Barcelona. Institut de Ciència i Tecnologia Ambientals) ; Martínez Vilalta, Jordi, 1975- (Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia) ; Zuccarini, Paolo (Institut de Recerca i Tecnologia Agroalimentàries) ; Escolà, Anna (Universitat Autònoma de Barcelona. Departament de Farmacologia, de Terapèutica i de Toxicologia) ; Armengot, Laura (Universitat de Barcelona. Departament de Biologia Vegetal)
Divergence in plant traits and trait plasticity after invasion has been proposed as mechanisms favouring invasion success. Current hypotheses predict a rapid evolution in response to changes in the abiotic conditions in the area of introduction or to differences in the herbivore consumption pressure caused by a decrease in the enemies associated with the area of origin [e. [...]
2015 - 10.1111/1365-2435.12463
Functional ecology, Vol. 29, Issue 11, November 2015, p 1475-1485
3 documents
Registre complet - Creative Commons
16.
36 p, 229.4 KB Diversity of pyrrolizidine alkaloids in native and invasive Senecio pterophorus (Asteraceae) : Implications for toxicity / Castells, Eva (Universitat Autònoma de Barcelona. Departament de Farmacologia, de Terapèutica i de Toxicologia) ; Mulder, Patrick P. J. ; Pérez-Trujillo, Míriam (Universitat Autònoma de Barcelona. Servei de Ressonància Magnètica Nuclear)
Changes in plant chemical defenses after invasion could have consequences on the invaded ecosystems by modifying the interactions between plants and herbivores and facilitating invasion success. However, no comprehensive biogeographical studies have yet determined the phenotypic levels of plant chemical defenses, as consumed by local herbivores, covering large distributional areas of a species. [...]
2014 - 10.1016/j.phytochem.2014.09.006
Phytochemistry, Vol. 108 (Dec 2014) , p. 137-146
2 documents
Registre complet -
17.
33 p, 314.5 KB Herbivores on native and exotic Senecio plants : is host switching related to plant novelty and insect diet breadth under field conditions? / Castells, Eva (Universitat Autònoma de Barcelona. Departament de Farmacologia, de Terapèutica i de Toxicologia) ; Morante, Maria (Universitat Autònoma de Barcelona. Departament de Farmacologia, de Terapèutica i de Toxicologia) ; Goula, Marta (Universitat Autònoma de Barcelona. Departament de Ciència Política i de Dret Públic) ; Pérez Hidalgo, Nicolás ; Dantart, Jordi ; Escolà, Anna (Universitat Autònoma de Barcelona. Departament de Farmacologia, de Terapèutica i de Toxicologia)
1. Native herbivores can establish novel interactions with alien plants after invasion. Nevertheless, it is unclear whether these new associations are quantitatively significant compared to the assemblages with native flora under natural conditions. [...]
2014 - 10.1111/icad.12064
Insect Conservation and Diversity, 2014  
Registre complet -
18.
34 p, 312.2 KB Reduced seed predation after invasion supports enemy release in a broad biogeographical survey / Castells, Eva (Universitat Autònoma de Barcelona. Departament de Farmacologia, de Terapèutica i de Toxicologia) ; Morante, Maria (Universitat Autònoma de Barcelona. Departament de Farmacologia, de Terapèutica i de Toxicologia) ; Blanco-Moreno, José Manuel (Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia) ; Sans, F. Xavier (Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia) ; Vilatersana, Roser (Institut Botànic de Barcelona) ; Blasco-Moreno, Anabel (Universitat Autònoma de Barcelona. Servei d'Estadística Aplicada)
The Enemy Release (ER) hypothesis predicts an increase in the plant invasive capacity after being released from their associated herbivores or pathogens in their area of origin. Despite the large number of studies on biological invasions addressing this hypothesis, tests evaluating changes in herbivory on native and introduced populations and their effects on plant reproductive potential at a biogeographical level are relatively rare. [...]
2013 - 10.1007/s00442-013-2718-4
Oecologia, Vol. 173, Num. 4 (Dec 2013) , p. 1397-1409  
Registre complet -
19.
34 p, 168.9 KB Geographical variation in alkaloid production in Conium maculatum populations experiencing differential herbivory by Agonopterix alstroemeriana / Castells, Eva (Universitat Autònoma de Barcelona. Departament de Farmacologia, de Terapèutica i de Toxicologia) ; Berhow, M. A. ; Vaughn, S. F. ; Berenbaum, May
Conium maculatum, a Eurasian weed naturalized in North America, contains high concentrations of piperidine alkaloids, which act as chemical defenses against herbivores. In the United States, C. maculatum was largely free from herbivory until approximately 30 years ago, when it was re-associated via accidental introduction with a monophagous European herbivore, the oecophorid caterpillar Agonopterix alstroemeriana. [...]
2005 - 10.1007/s10886-005-5921-x
Journal of chemical ecology, Vol. 31, Num. 8 (2005) , p. 1693-1709  
Registre complet -
20.
9 p, 285.6 KB Laboratory rearing of Agonopterix alstroemeriana, the defoliating poison hemlock (Conium maculatum L.) moth, and effects of piperidine alkaloids on preference and performance / Castells, Eva (Universitat Autònoma de Barcelona. Departament de Farmacologia, de Terapèutica i de Toxicologia) ; Berenbaum, May
Conium maculatum L. (Apiaceae), or poison hemlock, is an invasive plant native to Europe that has become extensively naturalized throughout North America. This species contains piperidine alkaloids, including coniine and -coniceine, that are highly toxic to vertebrates. [...]
2006 - 10.1603/0046-225X-35.3.607
Environmental entomology, Vol. 35, Num. 3 (2006) , p. 607-615  
Registre complet -

Grup de Recerca en Ecologia Química i Toxicologia : 26 registres trobats   anterior11 - 20següent  anar al registre:
Us interessa rebre alertes sobre nous resultats d'aquesta cerca?
Definiu una alerta personal via correu electrònic o subscribiu-vos al canal RSS.
Dipòsit Digital de Documents de la UAB :: Cerca :: Lliura :: Personalitza :: Ajuda
Powered by Invenio v1.1.6
Mantingut per ddd.bib@uab.cat  :: Metadades subjectes a:
Col·laborem