, 227:723

Physiological roles of plant glycoside hydrolases



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.


Glycoside hydrolases Cell wall Glycans Defense Symbiosis Energy mobilization Signalling Secondary metabolism Glycolipids 



Abscisic acid


Arabinogalactan protein


Starch-debranching enzyme




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


Carbohydrate-active enzymes

Endo H



Endoplasmatic reticulum


Indole-3-acetic acid


β-Glucan elicitor


Glucan elicitor binding protein


Glycoside hydrolase






Nod factor






Xyloglucan endotransglucosylase


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© Springer-Verlag 2007

Authors and Affiliations

  1. 1.Department of ChemistryUniversity of SaskatchewanSaskatoonCanada

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