Journal of Stress Physiology & Biochemistry, Vol. 5, No. 4,
2009, pp. 4-10 ISSN 1997-0838
Original Text Copyright (cc) 2009 by Alen’kina, Nikitina
ORIGINAL
ARTICLE
Data source : Google Scholar
QueryDate : 2016-12-24
Cites : 0
STUDY OF AZOSPIRILLUM LECTINS INFLUENCE
ON HYDROGEN PEROXIDE PRODUCTION IN WHEAT-ROOTS
Alen’kina S.A., Nikitina V.E.
Institute of Biochemistry and
Physiology of Plants and Microorganisms, Russian Academy of Sciences,
13 Prospekt Entuziastov, Saratov 410049, Russian Federation E-mail: alenkina@ibppm.sgu.ru
Received August 10, 2009
It was found that two cell-surface lectins
isolated from the nitrogen-fixing soil bacterium Azospirillum brasilense Sp7 and
from its mutant defective in lectin activity, A. brasilense Sp7.2.3 can stimulate
rapid formation of hydrogen peroxide, associated with an increase in
the activities of oxalate oxidase and peroxidase in the roots of wheat
seedlings. The most advantageous and most rapidly induced pathway of
hydrogen peroxide formation was the oxidation of oxalic acid by oxalate
oxidase because in this case, a 10-min treatment of the roots with the
lectins at 10 μg ml-1 was sufficient. The data from this
study attest that the Azospirillum
lectins can act as inducers of adaptation processes in the roots of
wheat seedlings.
