Document Detail


3-O-methyl-D-galactose residues in lycophyte primary cell walls.
MedLine Citation:
PMID:  11397438     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Acid hydrolysis of cell wall-rich material from young leaves of the lycophyte Selaginella apoda (L.) Spring yielded substantial amounts of 3-O-methyl-D-galactose (1) in addition to the usual major monosaccharides (glucose, galactose, arabinose, xylose and galacturonic acid). The yield of 1 approximately equalled that of galacturonic acid. Compound 1 was identified as 3-O-methylgalactose by its 1H and 13C NMR spectra, and shown to be the D-enantiomer by its susceptibility to D-galactose oxidase. Compound 1 was detected in acid hydrolysates of the alcohol-insoluble residues from young leaves of all lycophytes tested, both homosporous (Lycopodium, Huperzia and Diphasiastrum) and heterosporous (Selaginella). It was not detectable in the charophyte green algae Coleochaete scutata, Chara coralina or Klebsormidium flaccidum, any bryophytes [a hornwort (Anthoceros), four liverworts and three mosses], or any euphyllophytes [a psilopsid (Psilotum), a horsetail (Equisetum), eusporangiate and leptosporangiate ferns, the gymnosperm Gnetum, and diverse angiosperms]. A high content of 1 is thus an autapomorphy of the lycophytes.
Authors:
Z A Popper; I H Sadler; S C Fry
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Phytochemistry     Volume:  57     ISSN:  0031-9422     ISO Abbreviation:  Phytochemistry     Publication Date:  2001 Jul 
Date Detail:
Created Date:  2001-06-08     Completed Date:  2001-08-23     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0151434     Medline TA:  Phytochemistry     Country:  United States    
Other Details:
Languages:  eng     Pagination:  711-9     Citation Subset:  IM    
Affiliation:
The Edinburgh Cell Wall Group, Institute of Cell and Molecular Biology, The University of Edinburgh, Daniel Rutherford Building, The King's Buildings, Mayfield Road, Edinburgh EH9 3JH, Scotland, UK.
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MeSH Terms
Descriptor/Qualifier:
Bryopsida / chemistry*
Cell Wall / chemistry*
Chromatography, Paper
Magnetic Resonance Spectroscopy
Methylgalactosides / analysis*,  chemistry
Stereoisomerism
Chemical
Reg. No./Substance:
0/Methylgalactosides; 1824-94-8/methyl beta-galactoside

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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