Do changes in spring phenology affect earlywood vessels? Perspective from the xylogenesis monitoring of two sympatric ring-porous oaks

© 2015 The Authors. New Phytologist © 2015 New Phytologist Trust.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 209(2016), 2 vom: 01. Jan., Seite 521-30
1. Verfasser: Pérez-de-Lis, Gonzalo (VerfasserIn)
Weitere Verfasser: Rossi, Sergio, Vázquez-Ruiz, Rosa Ana, Rozas, Vicente, García-González, Ignacio
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2016
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Quercus budburst cambium ecological wood anatomy growing degree days hydraulic diameter xylem
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520 |a © 2015 The Authors. New Phytologist © 2015 New Phytologist Trust. 
520 |a This study addresses relationships between leaf phenology, xylogenesis, and functional xylem anatomy in two ring-porous oak species, the temperate Quercus robur and the sub-Mediterranean Q. pyrenaica. Earlywood vessel (EV) formation and leaf phenology were monitored in 2012 and 2013. Ten individuals per species were sampled at each of three sites located in NW Iberian Peninsula. EV areas measured on microcore sections were used to calculate the hydraulic tree diameter (Dh ), in order to model relationships to phenology. Thermal requirements were evaluated using growing degree days (GDD). A species-specific timing of growth resumption was found. The onset of EV formation and budburst were associated to a particular GDD in each species. The onset and duration of EV enlargement affected Dh (and EV size) in Q. robur, but hardly in Q. pyrenaica. The relationship between the timings of EV formation and xylem structure appears to be stronger for the temperate oak, whose larger vessels may result from thermal-induced earlier resumption. In contrast, the sub-Mediterranean oak would maintain a more conservative hydraulic architecture under warming conditions 
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650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a Quercus 
650 4 |a budburst 
650 4 |a cambium 
650 4 |a ecological wood anatomy 
650 4 |a growing degree days 
650 4 |a hydraulic diameter 
650 4 |a xylem 
700 1 |a Rossi, Sergio  |e verfasserin  |4 aut 
700 1 |a Vázquez-Ruiz, Rosa Ana  |e verfasserin  |4 aut 
700 1 |a Rozas, Vicente  |e verfasserin  |4 aut 
700 1 |a García-González, Ignacio  |e verfasserin  |4 aut 
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