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Trends Plant Sci. 2004 Nov;9(11):523-8.

Plant fructan exohydrolases: a role in signaling and defense?

Author information

1
KU Leuven, Institute of Botany and Microbiology, Laboratory of Molecular Plant Physiology, Kasteelpark Arenberg 31, B-3001 Heverlee, Belgium. wim.vandenende@bio.kuleuven.ac.be

Abstract

Fructans are fructose oligomers and polymers synthesized by a small number of plant and bacterial species and mainly function as reserve carbohydrates. The terminal fructosyl-fructose linkages can be degraded by fructan exohydrolases (FEHs), occurring in bacteria, fungi and fructan plants. Unexpectedly, it was found that FEHs also occur in non-fructan plants such as Beta vulgaris and Arabidopsis thaliana that apparently lack endogenous fructan substrates. FEHs might have defense-related roles acting on bacterial fructan-containing slimes or might act on minute (up to now undetected) amounts of fructans acting as signals in plants.

PMID:
15501176
DOI:
10.1016/j.tplants.2004.09.008
[Indexed for MEDLINE]

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