Apoplastic pH during low-oxygen stress in Barley.

ABSTRACT:

Background and aims

Anoxia leads to an energy crisis, tolerance of which varies from plant to plant. Although the apoplast represents an important storage and reaction space, and engages in the mediation of membrane transport, this extracellular compartment has not yet been granted a role during oxygen shortage. Here, an attempt is made to highlight the importance of the apoplast during oxygen stress and to test whether information about it is transferred systemically in Hordeum vulgare.

Methods

Non-invasive ion-selective microprobes were used which, after being inserted through open stomata, directly contact the apoplastic fluid and continuously measure the apoplastic pH and changes to it.

Key results

(a) Barley leaves respond to oxygen stress with apoplastic alkalin

SUBMITTER: Felle HH 

PROVIDER: S-EPMC3292248 | biostudies-literature | 2006 Nov

REPOSITORIES: biostudies-literature