Eucalyptus globulus
Home » Concurrent measurements of stomatal conductance, sap pH and hydraulic conductance in Eucalyptus globulus clones

Concurrent measurements of stomatal conductance, sap pH and hydraulic conductance in Eucalyptus globulus clones

Selected Eucalyptus globulus clones can grow to a height of up to 14m in 3 years, receiving an average rainfall of 630 mm year–1 with a 4-month summer drought. Working with plants under a year old from five clones, Hernández et al. found that xylem sap pH decreased as water potential and stomatal conductance decreased under increasing vapour pressure deficits.

Eucalyptus globulus
Eucalyptus globulus. Photo: Joan Simon / Flickr.

Stomata closed after a significant amount of hydraulic conductance was lost, but precluded water potential from decreasing below –1.8MPa. These results suggest a coordinated response aimed at preserving the hydraulic sufficiency of the stem and resulting in sap acidification.

botanyone

The Annals of Botany Office is based at the University of Oxford.

Read this in your language

The Week in Botany

On Monday mornings we send out a newsletter of the links that have been catching the attention of our readers on Twitter and beyond. You can sign up to receive it below.

@BotanyOne on Mastodon

Loading Mastodon feed...

Audio


Archive