BRODRIBB, Timothy J.; CARRIQUI, Marc; DELZON, Sylvain; LUCANI, Christopher

doi:10.1104/pp.17.00552

Metadatos

Mostrar el registro completo del ítem

Licencia de uso del documento

BRODRIBB, Timothy J.
School of Biology

CARRIQUI, Marc
Department of Biology

DELZON, Sylvain
Biodiversité, Gènes & Communautés [BioGeCo]

Idioma

Article de revue

Este ítem está publicado en

Plant Physiology. 2017, vol. 174, n° 4, p. 2054-2061

Oxford University Press ; American Society of Plant Biologists

Resumen en inglés

The vulnerability of plant water transport tissues to a loss of function by cavitation during water stress is a key indicator of the survival capabilities of plant species during drought. Quantifying this important metric has been greatly advanced by noninvasive techniques that allow embolisms to be viewed directly in the vascular system. Here, we present a new method for evaluating the spatial and temporal propagation of embolizing bubbles in the stem xylem during imposed water stress. We demonstrate how the optical method, used previously in leaves, can be adapted to measure the xylem vulnerability of stems. Validation of the technique is carried out by measuring the xylem vulnerability of 13 conifers and two short-vesseled angiosperms and comparing the results with measurements made using the cavitron centrifuge method. Very close agreement between the two methods confirms the reliability of the new optical technique and opens the way to simple, efficient, and reliable assessment of stem vulnerability using standard flatbed scanners, cameras, or microscopes.< Leer menos

Palabras clave

stress hydrique

résistance à la cavitation

transport xylème

embolie

conifère

Palabras clave en inglés

water stress

embolism

coniferous tree

Metadatos

Compartir este ítem

Licencia de uso del documento

Optical measurement of stem xylem vulnerability

Idioma

Este ítem está publicado en

Resumen en inglés

Palabras clave

Palabras clave en inglés

URI

DOI

Orígen

Centros de investigación