Planta

, 227:723

Physiological roles of plant glycoside hydrolases

Review

DOI: 10.1007/s00425-007-0668-y

Cite this article as:
Minic, Z. Planta (2008) 227: 723. doi:10.1007/s00425-007-0668-y
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Abstract

The functions of plant glycoside hydrolases and transglycosidases have been studied using different biochemical and molecular genetic approaches. These enzymes are involved in the metabolism of various carbohydrates containing compounds present in the plant tissues. The structural and functional diversity of the carbohydrates implies a vast spectrum of enzymes involved in their metabolism. Complete genome sequence of Arabidopsis and rice has allowed the classification of glycoside hydrolases in different families based on amino acid sequence data. The genomes of these plants contain 29 families of glycoside hydrolases. This review summarizes the current research on plant glycoside hydrolases concerning their principal functional roles, which were attributed to different families. The majority of these plant glycoside hydrolases are involved in cell wall polysaccharide metabolism. Other functions include their participation in the biosynthesis and remodulation of glycans, mobilization of energy, defence, symbiosis, signalling, secondary plant metabolism and metabolism of glycolipids.

Keywords

Glycoside hydrolasesCell wallGlycansDefenseSymbiosisEnergy mobilizationSignallingSecondary metabolismGlycolipids

Abbreviations

ABA

Abscisic acid

AGP

Arabinogalactan protein

DBE

Starch-debranching enzyme

DIBOA

2,4-Dihydroxy-1,4-benzoxazin-3-one

DIMBOA

2,4-Dihydroxy-7-methoxy -1,4-benzoxazin-3-one

CAZY

Carbohydrate-active enzymes

Endo H

Endoglucosaminidase

ER

Endoplasmatic reticulum

IAA

Indole-3-acetic acid

GE

β-Glucan elicitor

GEBP

Glucan elicitor binding protein

GH

Glycoside hydrolase

GT

Glycosyltransferase

GUS

β-d-Glucuronidase

NF

Nod factor

PG

Polygalacturonase

PR

Pathogenesis-related

XET

Xyloglucan endotransglucosylase

Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  1. 1.Department of ChemistryUniversity of SaskatchewanSaskatoonCanada