Changes in antioxidants activity in grasses from complex Lolium-Festuca as a response to Microdochium nivale infection

Abstract

Pink snow mould is a disease caused by Microdochium nivale affecting winter cereals and grasses. In response to pathogen attack, plants initiate oxygen burst within which hydrogen peroxide increases rapidly in a huge amount. We have investigated the activity of catalase (CAT), non-specific peroxidases (PX) and isoforms of superoxide dismutase (SOD) in leaves of grasses from complex Lolium-Festuca 2, 4 and 8 days after inoculation with M. nivale. Each plant species showed a specific pattern of enzymatic kinetics during infection. We concluded that increased activity of PX and decreased activity of CAT may be recognized as the markers of the M.nivale resistance.

Keywords

Antioxidants; Catalase; Grasses; Microdochium nivale; Peroxidases; Reactive oxygen species; Snow mould; Superoxide dismutase

Published in

Physiological and Molecular Plant Pathology
2018, Volume: 104, pages: 40-47 Publisher: ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD

UKÄ Subject classification

Botany


Publication identifier

DOI: https://doi.org/10.1016/j.pmpp.2018.08.006

Permanent link to this page (URI)

https://res.slu.se/id/publ/109278