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

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...

Full description

Saved in:
Bibliographic Details
Published in:The New phytologist 2016, Vol.209 (2), p.521-530
Main Authors: Pérez‐de‐Lis, Gonzalo, Rossi, Sergio, Vázquez‐Ruiz, Rosa Ana, Rozas, Vicente, García‐González, Ignacio
Format: Article
Language:English
Subjects:
budburst
cambium
Diameters
earlywood
ecological wood anatomy
Enlargement
growing degree days
heat sums
hydraulic diameter
Leaves
Monitoring
Oak
Phenology
Plant Leaves - physiology
Quercus
Quercus - anatomy & histology
Quercus - growth & development
Quercus - physiology
Quercus pyrenaica
Quercus robur
Spain
Species
Species Specificity
spring
Sympatric populations
tree and stand measurements
Trees - growth & development
Vessels
Weather
Wood - growth & development
Xylem
Xylem - anatomy & histology
Xylem - physiology
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:0028-646X
1469-8137
DOI:10.1111/nph.13610