Downregulation of net phosphorus uptake vs. leaf resorption

Downregulation of net phosphorus uptake vs. leaf resorption

A trade-off may exist between the capacity of plants to downregulate their phosphorus uptake capacity and the efficiency of resorption from leaves in severely impoverished environments.

Downregulation of net phosphorus uptake vs. leaf resorption
Downregulation of net phosphorus uptake vs. leaf resorption

A trade-off may exist between the capacity of plants to downregulate their phosphorus (P) uptake capacity and their efficiency of P resorption from senescent leaves in species from severely P-impoverished environments. de Campos et al. grow four Australian native species (Banksia attenuata, B. menziesii, Acacia truncata and A. xanthina) in nutrient solutions at a range of P concentrations and determine rates of uptake, leaf concentrations, and resorption proficiency values. The results support the hypothesis that the ability to resorb P from senescing leaves is inversely related to the capacity to downregulate net P uptake. Constitutive synthesis of P transporters may be a prerequisite for proficient P remobilization from senescing tissues.

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