Characterization of sodium transport at the plasma membrane of Spergularia marina

Plants vary in their whole plant strategies for managing the sodium (Na$\sp{+}$) present in their environment, but current models predict that they have a common strategy at the cellular level: exclusion from the cytoplasm. This entails either passive exclusion mediated by low plasma membrane permeability or active exclusion of passively acquired Na$\sp{+}$ which has moved down its electrochemical gradient into the cell. Whole plant studies using the halophyte Spergularia marina have demonstrated high permeability for Na$\sp{+}$ into and out of root cells and the research reported here investigates these mechanisms by directly measuring Na$\sp{+}$ transport using radiolabelled Na$\sp{+}$ and sealed plasma membrane vesicles from the roots of this species. This is the first report to characterize $\sp{22}$Na$\sp{+}$ transport using plant plasma membrane vesicles.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Biology, Botany

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Wickens, Linda Karolyn

Contributors dc:contributor

• Cheeseman, John M.

• Biology, Botany
• Biology, Cell
• Biology, Plant Physiology

Statement dc:rights

• Copyright 1991 Wickens, Linda Karolyn

Language dc:language

eng

Identifier

AAI9211033
(UMI)AAI9211033

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/19644