Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Vessel length and conductivity of Ulmus branches: ontogenetic changes and relationship with resistance to Dutch elm disease
Year:2013
Research Areas
  • Natural sciences and health sciences
Information
Abstract
Changes in age of the hydraulic architecture of Ulmus minor and U. minor x U. pumila clones were studied and related with the tolerance to Dutch elm disease (DED). The xylem vessel dimensions and the conductivity to air of 2- to 7- year old branches were analysed and quantified. There were no obvious differences in vessel length distribution and conductivity that would explain differences in DED tolerance among the U. minor clones, or, at the taxon level, the higher DED tolerance of U. minor x U. pumila. Among the U. minor clones, the more susceptible had wider vessels and a higher maximum vessel diameter than the more tolerant clone. Relationships among vessel lengths, vessel diameters and branches sizes were highly significant, and varied between taxa. The diameter and length of vessels increased with age, and average values stabilized 1-2 years earlier for U. minor than for U. minor x pumila. Mean maximum vessel length was significantly higher for U. minor and markedly increased more with age and with maximum vessel diameter than for U. minor x pumila. With each 0.2 m increase in height up the stem, the conductivities for U. minor and U. minor x U. pumila decreased by 59 and 50%, respectively, probably due to the shortening of vessels. The implications of xylem structure for the means of pathogen movement and resistance to Dutch elm disease are discussed.
International
Si
JCR
Si
Title
Trees Structure and Function
ISBN
0931-1890
Impact factor JCR
1,925
Impact info
Volume
27
10.1007/s00468-013-0872-2
Journal number
5
From page
1239
To page
1248
Month
OCTUBRE
Ranking
10/60 (Forestry)
Participants
  • Autor: Juan Antonio Martin Garcia (UPM)
  • Autor: Alejandro Solla
  • Autor: M Ruiz-Villar
  • Autor: Luis Alfonso Gil Sanchez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Genética y Fisiología Forestal
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