ISSN:
1432-1890
Keywords:
Key words Arbuscular mycorrhiza
;
α-Mannosidase
;
Glycosidases
;
Allium schoenoprasum
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Mycorrhizal and nonmycorrhizal roots of Allium schoenoprasum were tested for activities of α-mannosidase, β-glucosidase and arabinosidase. Mannosidase activity was higher by a factor of two in mycorrhizal than in nonmycorrhizal root extracts. The apparent molecular weight of the enzyme was 152 kDa and its KM was 1.25 mM in colonized roots and 1.85 mM in uncolonized roots. α-Mannosidase activity was further characterized by an acid pH optimum and Zn2+ dependency. No significant differences could be found between mycorrhizal and nonmycorrhizal roots for β-glucosidase and arabinosidase activities.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s005720050102
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