The galactan sulphates of the conchocelis phases of Porphyra leucostricta and Bangia atropurpurea (rhodophyta)

Michael R. Gretz; Esther L. Mccandless; Jerome M. Aronson; Milton R. Sommerfeld

doi:10.1093/jxb/34.6.705

The galactan sulphates of the conchocelis phases of Porphyra leucostricta and Bangia atropurpurea (rhodophyta)

Michael R. Gretz, Esther L. Mccandless, Jerome M. Aronson, Milton R. Sommerfeld

Research output: Contribution to journal › Article › peer-review

36 Scopus citations

Abstract

Galactan sulphates have been extracted from mechanically isolated cell walls of laboratory cultured conchocelis phases of Porphyra leucostricta and Bangia atropurpurea and their structure established by chemical methods and ¹³C-n.m.r. spectroscopy. The polysaccharides represent an extreme structure for porphyran-type polymers in that they consist almost entirely of 3-linked β-D-galactosyl residues alternating with 4-linked α-L-galactose-6-sulphate residues, the molar ratio of D to L units being approximately 1: 1. ¹³C-n.m.r. and gas-liquid and paper chromatography gave no indication of 6-O-methyl-D-galactose in these polymers. Conchocelis galactans are chemically distinct from porphyrans of generic phases of Porphyra and Bangia.

Original language	English (US)
Pages (from-to)	705-711
Number of pages	7
Journal	Journal of Experimental Botany
Volume	34
Issue number	6
DOIs	https://doi.org/10.1093/jxb/34.6.705
State	Published - Jun 1983

Keywords

Cell walls
Galactans
Rhodophyta

ASJC Scopus subject areas

Physiology
Plant Science

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10.1093/jxb/34.6.705

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title = "The galactan sulphates of the conchocelis phases of Porphyra leucostricta and Bangia atropurpurea (rhodophyta)",

abstract = "Galactan sulphates have been extracted from mechanically isolated cell walls of laboratory cultured conchocelis phases of Porphyra leucostricta and Bangia atropurpurea and their structure established by chemical methods and 13C-n.m.r. spectroscopy. The polysaccharides represent an extreme structure for porphyran-type polymers in that they consist almost entirely of 3-linked β-D-galactosyl residues alternating with 4-linked α-L-galactose-6-sulphate residues, the molar ratio of D to L units being approximately 1: 1. 13C-n.m.r. and gas-liquid and paper chromatography gave no indication of 6-O-methyl-D-galactose in these polymers. Conchocelis galactans are chemically distinct from porphyrans of generic phases of Porphyra and Bangia.",

keywords = "Cell walls, Galactans, Rhodophyta",

author = "Gretz, {Michael R.} and Mccandless, {Esther L.} and Aronson, {Jerome M.} and Sommerfeld, {Milton R.}",

note = "Funding Information: ACKNOWLEDGEMENTS The technical assistance of Mrs. Catherine M. Vollmer is gratefully acknowledged. This work was supported in part by N.S.E.R.C. grant A-2286.",

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doi = "10.1093/jxb/34.6.705",

language = "English (US)",

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AU - Gretz, Michael R.

AU - Mccandless, Esther L.

AU - Aronson, Jerome M.

AU - Sommerfeld, Milton R.

N1 - Funding Information: ACKNOWLEDGEMENTS The technical assistance of Mrs. Catherine M. Vollmer is gratefully acknowledged. This work was supported in part by N.S.E.R.C. grant A-2286.

PY - 1983/6

Y1 - 1983/6

N2 - Galactan sulphates have been extracted from mechanically isolated cell walls of laboratory cultured conchocelis phases of Porphyra leucostricta and Bangia atropurpurea and their structure established by chemical methods and 13C-n.m.r. spectroscopy. The polysaccharides represent an extreme structure for porphyran-type polymers in that they consist almost entirely of 3-linked β-D-galactosyl residues alternating with 4-linked α-L-galactose-6-sulphate residues, the molar ratio of D to L units being approximately 1: 1. 13C-n.m.r. and gas-liquid and paper chromatography gave no indication of 6-O-methyl-D-galactose in these polymers. Conchocelis galactans are chemically distinct from porphyrans of generic phases of Porphyra and Bangia.

AB - Galactan sulphates have been extracted from mechanically isolated cell walls of laboratory cultured conchocelis phases of Porphyra leucostricta and Bangia atropurpurea and their structure established by chemical methods and 13C-n.m.r. spectroscopy. The polysaccharides represent an extreme structure for porphyran-type polymers in that they consist almost entirely of 3-linked β-D-galactosyl residues alternating with 4-linked α-L-galactose-6-sulphate residues, the molar ratio of D to L units being approximately 1: 1. 13C-n.m.r. and gas-liquid and paper chromatography gave no indication of 6-O-methyl-D-galactose in these polymers. Conchocelis galactans are chemically distinct from porphyrans of generic phases of Porphyra and Bangia.

KW - Cell walls

KW - Galactans

KW - Rhodophyta

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The galactan sulphates of the conchocelis phases of Porphyra leucostricta and Bangia atropurpurea (rhodophyta)

Abstract

Keywords

ASJC Scopus subject areas

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