TITLE:
Search for Molecular Markers of Wheat Resistance to Fungal Pathogens
AUTHORS:
Liubov G. Yarullina, Svetlana V. Veselova, Rinat I. Ibragimov, Irina A. Shpirnaya, Rita I. Kasimova, Albina R. Akhatova, Vyacheslav O. Tsvetkov, Igor V. Maksimov
KEYWORDS:
Infection, Peroxidase, Oxalate Oxidase, Protease Inhibitor, Pectinase Inhibitor, PR-Gene Expression, Н2О2, Lignin, Wheat
JOURNAL NAME:
Agricultural Sciences,
Vol.5 No.8,
July
24,
2014
ABSTRACT: Functional traits, potentially associated with resistance to infection,
were investigated in cultivars of bread wheat. Plant responses to infection by
hemibiotrophic fungus Stagonospora (Septoria) nodorum were studied under
laboratory conditions. Infection-induced up-regulation of genes coding for
class III peroxidase, oxalate oxidase and protease inhibitor was greater in
leaves with reduced disease symptoms (percentage of chlorotic or necrotic leaf
area). Similar association was detected between activity of pectinase
inhibitors and disease severity. Resistant cultivar also differed from the susceptible
one by increased content of Н2О2 in infected tissues and more intensive deposition of lignin. We discuss
possibility of using these functional traits in plant breeding for increased
stress tolerance.