The composite water and solute transport of barley (Hordeum vulgare) roots: effect of suberized barriers.

ABSTRACT:

Background and aims

Roots have complex anatomical structures, and certain localized cell layers develop suberized apoplastic barriers. The size and tightness of these barriers depend on the growth conditions and on the age of the root. Such complex anatomical structures result in a composite water and solute transport in roots.

Methods

Development of apoplastic barriers along barley seminal roots was detected using various staining methods, and the suberin amounts in the apical and basal zones were analysed using gas chromatography-mass spectometry (GC-MS). The hydraulic conductivity of roots ( Lp r ) and of cortical cells ( Lp c ) was measured using root and cell pressure probes.

Key results

When grown in hydroponics, barley roots did not form an exodermis, even at t

SUBMITTER: Ranathunge K 

PROVIDER: S-EPMC5604597 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature