Piriformospora indica root colonization triggers local and systemic root responses and inhibits secondary colonization of distal roots.

ABSTRACT: Piriformosporaindica is a basidiomycete fungus colonizing roots of a wide range of higher plants, including crop plants and the model plant Arabidopsis thaliana. Previous studies have shown that P. indica improves growth, and enhances systemic pathogen resistance in leaves of host plants. To investigate systemic effects within the root system, we established a hydroponic split-root cultivation system for Arabidopsis. Using quantitative real-time PCR, we show that initial P. indica colonization triggers a local, transient response of several defense-related transcripts, of which some were also induced in shoots and in distal, non-colonized roots of the same plant. Systemic effects on distal roots included the inhibition of secondary P. indica colonization. Faster and stronger induction of d

SUBMITTER: Pedrotti L 

PROVIDER: S-EPMC3724858 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature