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The Effect of Soybean Mosaic Virus on the Activity of Carbohydrases in Leaves of Sensitive and Resistant Soybean Plants

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Influence of soybean mosaic virus (SMV) on activity of 1,3-b-D-gluĀ­nase, a-D-mannosidase, b-D-galactosidase and b-D-glucosidase in leaves of extremely resistant (cv. Devamusume) and sensitive (cv. Primorskaya 529) young soybean plants was studied. Enzymes can be put in order of increase of their activities as follows: b-D-glucosidase, b-D-galactosidase, a-D-mannosidase and 1,3-b-D-glucanase independently of a cultivar. High level of 1,3-b-D-glucanase activity was detected in leaves of the healthy resistant plants in comparison to the healthy sensitive plants. In response to systemic invasion with SMV, the activity of 1,3-b-D-gluĀ­canase in leaves of resistant cultivar did not change. Infection of the sensitive cultivar with SMV caused a considerable increase in activity of 1,3-b-D-glucanase in the leaves above the inoculated leaves. After infection with SMV no difference had been found in the level of activity of glycosidase between the soybean cultivars, though the virus caused mosaic symptoms and deformation and roll of leaves of the sensitive cultivar.

Keywords: 1; 3-b-D-glucanase; a-D-mannosidase; b-D-galactosidase and b-D-glucosidase; soybean mosaic virus; soybean.

Document Type: Research Article

Publication date: September 26, 2002

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