View source for Pest Management Science (2010) 66, 767-772

{{Publication
|Publication authors=Chiara Ferracini, [[Paolo Curir]], Marcello Dolci, Virginia Lanzotti and [[Alberto Alma]]
|Author Page=Paolo Curir, Alberto Alma
|Publication date=2010
|dc:title=''Aesculus pavia'' foliar saponins: defensive role against the leafminer ''[[Cameraria ohridella]] ''
|Publication journal=Pest Management Science
|prism:volume=66 (7)
|prism:startingPage=767
|Last page=772
|DOI=10.1002/ps.1940
|Publication abstract='''BACKGROUND:''' Recently, the leafminer ''Cameraria ohridella'' Deschka and Dimic has caused heavy damage to the white-flowering horse chestnut in Europe. Among the ''Aesculus'' genus, ''A. pavia'' L. HBT genotype, characterised by red flowers, showed an atypical resistance towards this pest. Its leaves, shaken in water, originated a dense foam, indicating the presence of saponins, unlike the common horse chestnut tree. The aim was to isolate and identify these leaf saponins and test their possible defensive role against ''C. ohridella''.<br/>'''RESULTS:''' Spectroscopic analyses showed that ''A. pavia'' HBT genotype leaves contained a mixture of saponins, four of which were based on the same structure as commercial escin saponins, the typical saponin mixture produced by ''A. hippocastanum'' and accumulated only within bark and fruit tissues. The mixture showed a repellent effect on ''C. ohridella'' moth. The number of mines detected on the leaves of ''A. hippocastanum'' plants treated with ''A. pavia'' HBT saponins through watering and stem brushing was significantly lower than the control, and in many cases no mines were ever observed.<br/>'''CONCLUSION:''' The results showed that the exogenous saponins were translocated from roots/stem to the leaf tissues, and their accumulation seemed to ensure an appreciable degree of protection against the leafminer.
|AbstractCC=Yes
|Research topic=resistance/tolerance/defence of host
|Is book=No
}}
{{Pest record
|Pest=Cameraria ohridella
|Crop=Horse-chestnut/buckeye (Aesculus)
|Quarantined=No
}}