Titre du document / Document title

Isoprenoid emissions of Quercus spp. (Q. suber and Q. ilex) in mixed stands contrasting in interspecific genetic introgression

Auteur(s) / Author(s)

STAUDT Michael ⁽¹⁾ ; MIR Céline ⁽¹⁾ ; JOFFRE Richard ⁽¹⁾ ; RAMBAL Serge ⁽¹⁾ ; BONIN Aurélie ⁽¹⁾ ; LANDAIS Damien ⁽¹⁾ ; LUMARET Roselyne ⁽¹⁾ ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

⁽¹⁾ CNRS Centre d'Ecologie Fonctionnelle et Evolutive, 1919 route de Mende, 34293 Montpellier, FRANCE

Résumé / Abstract

○ Among oak species, Quercus ilex is classified as a monoterpene emitter and Q. suber is mainly known as a nonisoprenoid emitter. The extent and origin of this diversification is unknown. ○ We examined intra- and interspecific emission variability in two mixed stands which differed in their level of hybridization and reciprocal genetic introgression based on variations in cytoplasmic (chloroplast DNA) and nuclear (allozyme) markers. ○ At both sites all trees identified as Q. ilex, or as recent descendants from Q. ilex x Q. suber hybrids, emitted monoterpenes. Of Q. suber trees (genetically introgressed or not by Q. ilex), 91% were also monoterpene emitters, and the remainder nonemitters. One tree identified as a Q. canariensis x Q. ilex hybrid emitted both isoprene and monoterpenes. Compared with Q. ilex, the standard emission rate of Q. suber was higher in summer and lower in autumn. Both species emitted the same monoterpenes, proportions of which showed significant intra- and interspecific variability. ○ The results suggest that Q. suber populations in the French Mediterranean intrinsically emit monoterpenes, and that gene flow between oak species contributes to diversification of emission signatures.

Revue / Journal Title

New phytologist   ISSN 0028-646X   CODEN NEPHAV 

Source / Source

2004, vol. 163, n^o3, pp. 573-584 [12 page(s) (article)] (1 p.1/4)

Langue / Language

Anglais

Editeur / Publisher

Blackwell, Oxford, ROYAUME-UNI  (1902) (Revue)

Mots-clés anglais / English Keywords

Hardwood forest tree ; Volatile organic compound ; Spermatophyta ; Angiospermae ; Dicotyledones ; Fagaceae ; Taxonomy ; Quercus suber ; Quercus ilex ; Interspecific comparison ; Chemotaxonomy ; Hybrid ; Gene flow ; Monoterpene ; Isoprenoid ; Emission ; Chloroplast DNA ; Introgression ;

Mots-clés français / French Keywords

Arbre forestier feuillu ; Composé organique volatil ; Spermatophyta ; Angiospermae ; Dicotyledones ; Fagaceae ; Systématique ; Quercus suber ; Quercus ilex ; Comparaison interspécifique ; Chimiosystématique ; Hybride ; Flux génique ; Monoterpène ; Isoprénoïde ; Emission ; DNA chloroplastique ; Introgression ;

Mots-clés espagnols / Spanish Keywords

Arbol forestal frondoso ; Compuesto orgánico volátil ; Spermatophyta ; Angiospermae ; Dicotyledones ; Fagaceae ; Sistemática ; Quercus suber ; Quercus ilex ; Comparación interespecífica ; Quimiotaxonomía ; Híbrido ; Flujo génico ; Monoterpeno ; Isoprenoide ; Emisión ; DNA cloroplástico ; Introgresión ;

Mots-clés d'auteur / Author Keywords

basal emission rate ; chemotaxonomy ; chemotypes ; evergreen oaks ; genetic introgression ; isoprene ; monoterpenes ; VOC (volatile organic compound) emissions ;

Localisation / Location

INIST-CNRS, Cote INIST : 3019, 35400011618221.0090