Lipid composition of the roots and the shoot of the salt‐sensitive Plantago media L., the salt‐tolerant P. maritima L. and the less salt‐tolerant P. coronopus L. was followed under saline conditions. In the roots of P. media the level of phospho‐, galacto‐ and sulpholipids decreased strongly with increased NaCl concentration, indicating decreased control of permeability of the root cell membranes. In the roots of the two salt‐tolerant species the level of most lipid classes was maintained or even raised up to 75 mM NaCl, and a decrease was noted only at higher NaCl concentrations. In P. maritima, a species from relatively nutrient‐rich habitats, decreased lipid levels in the roots and shoot were observed with increasing salinity in combination with a low nutrient availability. The Ca2+‐ and Mg2+‐stimulated ATPase activities of the microsomal fraction of the roots of P. maritima was decreased at a salinity level in excess of 150 mM, while in P. coronopus they were decreased at all NaCl levels tested. The obtained results are discussed as part of the adaptation of the species to salinity.
|Number of pages||5|
|Publication status||Published - Jul 1980|
ASJC Scopus subject areas
- Plant Science
- Cell Biology