Format

Send to

Choose Destination
See comment in PubMed Commons below
Plant Physiol Biochem. 2005 Dec;43(12):1031-8. Epub 2005 Dec 13.

Are glucocerebrosides the predominant sphingolipids in plant plasma membranes?

Author information

1
Universität Hamburg, Biozentrum Klein Flottbek und Botanischer Garten, Ohnhorststrasse 18, 22609 Hamburg, Germany. sperling@botanik.uni-hamburg.de

Abstract

Long-chain sphingobases have been analyzed in various fractions prepared from different organs (leaf, root, storage tissue) from five dicotyledoneous plants (Arabidopsis thaliana, Brassica oleracea, Nicotiana tabacum, Pisum sativum, Spinacia oleracea). The resulting sphingobase profiles from cerebrosides and plasma membranes (PMs) show large qualitative and quantitative differences. Assuming that cerebrosides from all cellular membranes have similar sphingobase profiles, these data suggest that cerebrosides, considered to be characteristic glycolipids of plant PMs and specified by large proportions of sphingobases with an 8Z-double bond motif, do not represent the major sphingolipids of PMs. The fraction of unidentified complex sphingolipids, containing mainly 8E-phytosphingenine, exceeds the cerebroside proportion in PMs by several factors and may be as abundant as diacylglycerol-based phospholipids. These results are discussed with respect to the distribution of various lipids between the bilayer halves of plant PM.

PMID:
16386430
DOI:
10.1016/j.plaphy.2005.10.004
[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Support Center