Per citar aquest document: http://ddd.uab.cat/record/143880
Ozone degrades floral scent and reduces pollinator attraction to flowers
Farré Armengol, Gerard (Centre de Recerca Ecològica i Aplicacions Forestals)
Filella Cubells, Iolanda (Centre de Recerca Ecològica i Aplicacions Forestals)
Llusià Benet, Joan (Centre de Recerca Ecològica i Aplicacions Forestals)
Peñuelas, Josep (Centre de Recerca Ecològica i Aplicacions Forestals)

Data: 2016
Resum: In this work we analyzed the degradation of floral scent volatiles from Brassica nigra by reaction with ozone along a distance gradient and the consequences for pollinator attraction. - For this purpose we used a reaction system comprising three reaction tubes in which we conducted measurements of floral volatiles using a proton-transfer-reaction time-of-flight mass spectrometer (PTR-TOF-MS) and GC-MS. We also tested the effects of floral scent degradation on the responses of the generalist pollinator Bombus terrestris. - The chemical analyses revealed that supplementing air with ozone led to an increasing reduction in the concentrations of floral volatiles in air with distance from the volatile source. The results revealed different reactivities with ozone for different floral scent constituents, which emphasized that ozone exposure not only degrades floral scents, but also changes the ratios of compounds in a scent blend. Behavioural tests revealed that floral scent was reduced in its attractiveness to pollinators after it had been exposed to 120 ppb O3 over a 4. 5 m distance. - The combined results of chemical analyses and behavioural responses of pollinators strongly suggest that high ozone concentrations have significant negative impacts on pollination by reducing the distance over which floral olfactory signals can be detected by pollinators.
Nota: Número d'acord de subvenció EC/FP7/610028
Nota: Número d'acord de subvenció MINECO/CGL2013-48074-P
Nota: Número d'acord de subvenció AGAUR/2014/SGR-274
Drets: Tots els drets reservats
Llengua: Anglès
Document: article ; recerca ; acceptedVersion
Matèria: Brassica nigra ; Bombus terrestris ; Monoterpenes ; Anisaldehyde ; Phenol ; P-cymene ; Behavioral tests
Publicat a: New Phytologist, Vol. 209 Issue 1 (January 2016) , p. 151-160, ISSN 0028-646X

DOI: 10.1111/nph.13620


Disponible a partir de: 2017-01-31
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Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > CREAF (Centre de Recerca Ecològica i d'Aplicacions Forestals) > Imbalance-P
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 Registre creat el 2015-11-30, darrera modificació el 2016-06-04



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