Congressi Nazionali SISEF

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Presentazione orale

Loreto F, Bagnoli F, Fineschi S

Volatile isoprenoids identify phylogeographical differences but do not reveal the genetic structure in cork oak (Quercus suber) European provenances

Riassunto: Emissions of volatile isoprenoids are strongly controlled by the environment, but these compound may also be used as chemotaxonomic markers, if the environmental impact is not strong. We used a “common garden” approach to clarify whether chemical profiles of volatile isoprenoid emission match biological diversity in cork oak, a monoterpene-emitting species that frequently hybridizes with other oaks and is widely distributed over south Europe. Cork oak provenances that have been genetically separated and now constitute different haplotypes were collected in Portugal, Spain, and Italy. They were planted in the common garden and emissions of volatile isoprenoids were recorded after a six-month long acclimation to the new conditions. It is shown that volatile isoprenoids might indeed suitably track geographical diversity even at the intraspecific level, whereas this is not observed in other evergreen oaks that have not been intensively bred. Differences in monoterpene emissions are not caused by introgression of the genetic material of other species into the cork oak germoplasm. It is speculated that breeding for productive traits might drive selection for isoprenoid diversity as an associated trait, indirectly and unintentionally modulating important adaptive mechanisms against biotic and abiotic stressors.

Citazione: Loreto F, Bagnoli F, Fineschi S (2009). Volatile isoprenoids identify phylogeographical differences but do not reveal the genetic structure in cork oak (Quercus suber) European provenances. In: VII Congresso Nazionale SISEF “Sviluppo e adattamento, naturalità e conservazione: opportunità per un sistema forestale in transizione“ (Università degli Studi del Molise, Isernia - Pesche (IS), 29 Settembre - 3 Ottobre 2009), Abstract-book, Contributo #c07.6.10. - [online] URL: https://congressi.sisef.org/?action=paper&id=1260

Dettagli

Congresso VII Congresso Nazionale SISEF
“Sviluppo e adattamento, naturalità e conservazione: opportunità per un sistema forestale in transizione”
Università degli Studi del Molise, Isernia - Pesche (IS), 29 Settembre - 3 Ottobre 2009
Collocazione c07.6.10 (#)
Sessione Sessione 06
Moderatore/i Roberto Tognetti, Elena Paoletti
Data Oct 01, 2009
Ora 11:30-13:30
Luogo -
Info Autori
(*): speaker

F Loreto*
CNR Istituto di Biologia Agroambientale e Forestale, via Salaria km 29.300, I-00015 Monterotondo Scalo - RM, Italy.
Italy

F Bagnoli
CNR Istituto per la Protezione delle Piante, 50019 Sesto Fiorentino - FI, Italy
Italy

S Fineschi
CNR Istituto per la Protezione delle Piante, 50019 Sesto Fiorentino - FI, Italy
Italy