Intrinsic stability of Brassicaceae plasma membrane in relation to changes in proteins and lipids as a response to salinity.

Abstract:

:Changes in plasma membrane lipids, such as sterols and fatty acids, have been observed as a result of salt stress. These alterations, together with modification of the plasma membrane protein profile, confer changes in the physical properties of the membrane to be taken into account for biotechnological uses. In our experiments, the relationship between lipids and proteins in three different Brassicaceae species differing in salinity tolerance (Brassica oleracea, B. napus and Cakile maritima) and the final plasma membrane stability were studied. The observed changes in the sterol (mainly an increase in sitosterol) and fatty acid composition (increase in RUFA) in each species led to physical adaptation of the plasma membrane to salt stress. The in vitro vesicles stability was higher in the less tolerant (B. oleracea) plants together with low lipoxygenase activity. These results indicate that the proteins/lipids ratio and lipid composition is an important aspect to take into account for the use of natural vesicles in plant biotechnology.

journal_name

J Plant Physiol

authors

Chalbi N,Martínez-Ballesta MC,Youssef NB,Carvajal M

doi

10.1016/j.jplph.2014.12.003

subject

Has Abstract

pub_date

2015-03-01 00:00:00

pages

148-56

eissn

0176-1617

issn

1618-1328

pii

S0176-1617(14)00347-2

journal_volume

175

pub_type

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