<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Coll, Lluís</style></author><author><style face="normal" font="default" size="100%">Camarero, Araid</style></author><author><style face="normal" font="default" size="100%">Aragón, Juan Martínez De</style></author><author><style face="normal" font="default" size="100%">Camarero, Jesús Julio</style></author><author><style face="normal" font="default" size="100%">Martínez de Aragón, Juan</style></author><author><style face="normal" font="default" size="100%">Camarero, Araid</style></author><author><style face="normal" font="default" size="100%">Aragón, Juan Martínez De</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Fine Root Seasonal Dynamics, Plasticity, and Mycorrhization in 2 Coexisting Mediterranean Oaks with Contrasting Aboveground Phenology</style></title><secondary-title><style face="normal" font="default" size="100%">Ecoscience</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">architecture et le statut</style></keyword><keyword><style  face="normal" font="default" size="100%">Chênes</style></keyword><keyword><style  face="normal" font="default" size="100%">coexistence d</style></keyword><keyword><style  face="normal" font="default" size="100%">des mécanismes supportant la</style></keyword><keyword><style  face="normal" font="default" size="100%">Ectomycorrhizae</style></keyword><keyword><style  face="normal" font="default" size="100%">espèces méditerranéennes de</style></keyword><keyword><style  face="normal" font="default" size="100%">et caduques</style></keyword><keyword><style  face="normal" font="default" size="100%">feuilles persistantes</style></keyword><keyword><style  face="normal" font="default" size="100%">fine roots</style></keyword><keyword><style  face="normal" font="default" size="100%">l</style></keyword><keyword><style  face="normal" font="default" size="100%">mixte de chênes à</style></keyword><keyword><style  face="normal" font="default" size="100%">mycorhizien des radicelles d</style></keyword><keyword><style  face="normal" font="default" size="100%">nous avons analysé sur</style></keyword><keyword><style  face="normal" font="default" size="100%">nous avons utilisé la</style></keyword><keyword><style  face="normal" font="default" size="100%">Phenology</style></keyword><keyword><style  face="normal" font="default" size="100%">pour accroître notre compréhension</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus faginea</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus ilex</style></keyword><keyword><style  face="normal" font="default" size="100%">résumé</style></keyword><keyword><style  face="normal" font="default" size="100%">root traits</style></keyword><keyword><style  face="normal" font="default" size="100%">technique du sac</style></keyword><keyword><style  face="normal" font="default" size="100%">un peuplement</style></keyword><keyword><style  face="normal" font="default" size="100%">une année la production</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2012///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.bioone.org/doi/abs/10.2980/19-3-3488</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">19</style></volume><pages><style face="normal" font="default" size="100%">238 - 245</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">To advance understanding of the mechanisms underpinning the coexistence of Mediterranean oak species, we conducted a year-long analysis of the production, architecture, and mycorrhization status of the fine roots of a mixed evergreen (Quercus ilex) and winter deciduous (Quercus faginea) oak stand. We used the ingrowth bag technique to sample the fine roots produced by each species in spring, summer, and winter. For each season, root architecture traits (specific root length, root diameter, root tips) and variables associated to root ectomycorrhizal status were measured in the laboratory. Results showed a marked seasonality in the fine root architecture, including more fine root tips and longer roots per unit of weight formed in spring and summer, revealing a capacity in Mediterranean oak species to modify root architecture in spring and suggesting the possibility of increased resource capture in summer. Fine root ectomycorrhizal status was comparable between species and also showed marked seasonality: we found a high percentage of roots colonized by dead ectomycorrhizas in winter but low ectomycorrhizal colonization rates in summer. Quercus ilex produced greater amounts of fine roots than Q. faginea (particularly during spring), suggesting greater competitive ability in the former species for belowground resources.</style></abstract><issue><style face="normal" font="default" size="100%">3</style></issue></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">CHEVALIER, G</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Le chêne blanc et le chêne vert, essences truffières par excellence</style></title><secondary-title><style face="normal" font="default" size="100%">Forêt Mediterranéenne</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Chênes</style></keyword><keyword><style  face="normal" font="default" size="100%">Périgord (voyant)</style></keyword><keyword><style  face="normal" font="default" size="100%">plants mycorhizés</style></keyword><keyword><style  face="normal" font="default" size="100%">Truffes</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1996</style></year></dates><volume><style face="normal" font="default" size="100%">27</style></volume><pages><style face="normal" font="default" size="100%">235-242</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Truffies grow in association with a num­ ber of deciduous and coniferous tree spe­ cies. However, not ail of these species offer the same interest for the cultivation of top quality truffles. The oaks (Quercus ssp) feature among the best symbiotic hosts for the truffle, as muchfor the longevity ofproduction asfor the quality of the truffles obtained. Downy oak (Q. pubescens) and holm oak (Q. ilex) are the truffle trees of the Périgord par excellence (T. de Tricastin, T. de Noria and Spoletto, T. melanospo­ rum ) , because they are the best adapted to the particular conditions of soil and clima­ te in which the mushroom develops. Furthermore, the morphology of their root system and their slow rate of growth facili­ tate optimal development of the mushroom in the soil. The downy oak - thermophilic, heliophi­ Lous, xerophilous to mesoxerophilous, hardy, lime- resistant - is adapted above alt to the production of the truffle of Périgord but is also suitable of obtaining other varieties of fine truffles, including the celebrated piedmont white truffle (T. magnatum). The holm oak, heliophilous, thermoxero­ philo us, hardy, with a wide range of habi­ tat is adapted above all to the production of the truffle of Périgord and the summer truffle (T. aesti vum ). Since 1973, sorne 850,000 downy and holm oaks and 250,000 hazels, innoculated with truffle mycorrhiza under the supervi­ sion of the INRA (French national agricul­ tural research body), have been planted in numerous areas in the south of France and even in the north. Studies have shown the superiority of the oak over the hazel, parti­ cularly with regard to the frequency and regularity of production. In respect to rapidity of coming into production, sorne holm oaks were as early as hazels (three and a halfyears after planting). Mycorrhiza-innoculated plants presently available appear, wh en planted, as very heterogenious (aspect, habit, yield) due to the fact that they are multiplied by sowing. Selecting of vegetatively reproduced plants is currently under way. One study is inves­ tigating whether in a &quot;good producer&quot; there exists a relationship between yield and certain ofils genetic characteristics.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">CHEVALIER, G.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Le chêne blanc et le chêne vert, essences truffières par excellence</style></title><secondary-title><style face="normal" font="default" size="100%">Forêt Mediterranéenne</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Chênes</style></keyword><keyword><style  face="normal" font="default" size="100%">Périgord (voyant)</style></keyword><keyword><style  face="normal" font="default" size="100%">plants mycorhizés</style></keyword><keyword><style  face="normal" font="default" size="100%">Truffes</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1996</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1996///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.foret-mediterraneenne.org/upload/biblio/FORET_MED_1996_3_235.pdf</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">27</style></volume><pages><style face="normal" font="default" size="100%">235 - 242</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Truffies grow in association with a num­ ber of deciduous and coniferous tree spe­ cies. However, not ail of these species offer the same interest for the cultivation of top quality truffles. The oaks (Quercus ssp) feature among the best symbiotic hosts for the truffle, as muchfor the longevity ofproduction asfor the quality of the truffles obtained. Downy oak (Q. pubescens) and holm oak (Q. ilex) are the truffle trees of the Périgord par excellence (T. de Tricastin, T. de Noria and Spoletto, T. melanospo­ rum ) , because they are the best adapted to the particular conditions of soil and clima­ te in which the mushroom develops. Furthermore, the morphology of their root system and their slow rate of growth facili­ tate optimal development of the mushroom in the soil. The downy oak - thermophilic, heliophi­ Lous, xerophilous to mesoxerophilous, hardy, lime- resistant - is adapted above alt to the production of the truffle of Périgord but is also suitable of obtaining other varieties of fine truffles, including the celebrated piedmont white truffle (T. magnatum). The holm oak, heliophilous, thermoxero­ philo us, hardy, with a wide range of habi­ tat is adapted above all to the production of the truffle of Périgord and the summer truffle (T. aesti vum ). Since 1973, sorne 850,000 downy and holm oaks and 250,000 hazels, innoculated with truffle mycorrhiza under the supervi­ sion of the INRA (French national agricul­ tural research body), have been planted in numerous areas in the south of France and even in the north. Studies have shown the superiority of the oak over the hazel, parti­ cularly with regard to the frequency and regularity of production. In respect to rapidity of coming into production, sorne holm oaks were as early as hazels (three and a halfyears after planting). Mycorrhiza-innoculated plants presently available appear, wh en planted, as very heterogenious (aspect, habit, yield) due to the fact that they are multiplied by sowing. Selecting of vegetatively reproduced plants is currently under way. One study is inves­ tigating whether in a &quot;good producer&quot; there exists a relationship between yield and certain ofils genetic characteristics.</style></abstract><issue><style face="normal" font="default" size="100%">3</style></issue></record></records></xml>