The role of reactive oxygen in the development of Ramularia leaf spot disease in barley seedlings.

ABSTRACT:

Background and aims

Ramularia collo-cygni is an ascomycete fungus that colonizes barley primarily as a benign endophyte, although this interaction can become pathogenic, causing the disease Ramularia leaf spot (RLS). Factors, particularly reactive oxygen species, that resulted in the transition of the fungus from endophyte to necrotrophic parasite and the development of disease symptoms were investigated.

Methods

Disease development in artificially inoculated seedlings of barley varieties varying in partial resistance to RLS was related to exposure to abiotic stress prior to inoculation. Histochemical and molecular analysis determined the effect of R. collo-cygni colonization on accumulation of reactive oxygen species and antioxidant gene expression. Development of RLS on ba

SUBMITTER: McGrann GRD 

PROVIDER: S-EPMC5838821 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature