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Structural diversity, functions and biosynthesis of xyloglucans in angiosperm cell walls.
2009 (English)In: New Zealand Journal of Forestry Science, Vol. 39, p. 187-196Article in journal (Refereed) Published
Abstract [en]

Xyloglucans occur in the primary cell walls of all angiosperms where they are thought to have a structural role and be involved in the control of cell expansion. They also occur in the thick, non-lignified secondary cell walls of seeds of some species ofeudicotyledons where they serve as reserve carbohydrates. The xyloglucans in the primary cell walls of most eudicotyledons have similar structures with side chains containing galactose and fucose. However, in one group of eudicotyledons, the asterids, there is considerable structural variability in the xyloglucans, with many containing arabinose. There is also variability in the xyloglucans of the monocotyledons, with those in the family Poaceae containing no fucose and only small proportions ofgalactose. The xyloglucans of the thick, secondary cell walls of seeds are similar to those in the primary walls of most eudicotyledons, but contain no fucose. The functional significance of these structural variations is unknown. A number of genes and their encoded glycosyltransferases have been identified as being involved in the biosynthesis of the xyloglucans of the model eudicotyledon Arabidopsis thaliana. 

Place, publisher, year, edition, pages
Scion , 2009. Vol. 39, p. 187-196
Keywords [en]
Cell expansion, Eudicotyledons, Grasses and cereals (poaceae), Monocotyledons, Primary cell walls, Seed cell walls, Xyloglucan biosynthesis
National Category
Forest Science
Identifiers
URN: urn:nbn:se:kth:diva-214694Scopus ID: 2-s2.0-75649124872OAI: oai:DiVA.org:kth-214694DiVA, id: diva2:1142671
Note

QC 20170920

Available from: 2017-09-19 Created: 2017-09-19 Last updated: 2017-09-20Bibliographically approved

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