Correlation between influence of polysaccharides on hydrolase activity and their antiviral effect in tobacco leaves |
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Authors: | L. A. Lapshina V. P. Nagorskaya A. V. Reunov A. O. Barabanova N. M. Shevchenko I. M. Yermak T. N. Zvyagintseva L. A. Elyakova |
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Affiliation: | Pacific Institute of Bioorganic Chemistry, Far East Branch of the Russian Academy of Sciences, Vladivostok, Russia. |
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Abstract: | The activities of hydrolases (acid phosphatase, RNase, and proteases) in healthy and tobacco mosaic virus-infected leaves of Nicotiana tabacum L. var. Samsun, both untreated and treated with polysaccharides (PS) (1,3;1,6-β-D-glucan, fucoidan, and κ/β-carrageenan), were determined. The PS lead to substantial increase in the hydrolase level. The percentage of viral particles undergoing destructive change also increases in leaves treated with PS 24 h before infection. We suppose that the PS-mediated hydrolase activation promotes intracellular destruction of the viral particles and, thus, comprises one of the PS-induced protective mechanisms limiting intracellular viral accumulation. |
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