QueryDate : 2016-12-24
Cites : 0 + 0
| ORIGINAL
ARTICLE |
| | | Data source : Google Scholar QueryDate : 2016-12-24 Cites : 0 + 0 |
We
investigated the time course of changes in the endogenous content of
salicylic acid, the ratio between the acid's free and bound forms, and
changes in the activities of phenylalanine ammonia-lyase and catalase
in wheat seedling roots under the effect of the lectins of two strains
of the associative nitrogen-fixing bacterium Azospirillum: A.
brasilense Sp7 and its mutant defective in lectin activity, A.
brasilense Sp7.2.3. Differences in plant response to the action of the
lectins from these two strains were established. On the basis of the
obtained data, a model was proposed for lectin-assisted induction of
resistance, according to which the lectin effect on the roots of
seedlings results in accumulation of free salicylic acid, which
inhibits catalase activity, ultimately leading to accumulation of
hydrogen peroxide and to formation of induced resistance.
