Compatible Puccinia hordei infection in barley induces basal defense to subsequent infection by Blumeria graminis

R. Aghnoum, R.E. Niks

Research output: Contribution to journalArticleAcademicpeer-review

3 Citations (Scopus)

Abstract

Rusts and powdery mildews employ different strategies to suppress defense during penetration. We observed that a compatible interaction of barley-Puccinia hordei induced increased penetration resistance to a challenge infection by powdery mildew. This induced resistance is local and its level is not determined by the virulence spectrum of the challenger isolate. Our data suggest that the inducer effect is due to rust-stoma communication during penetration, to the presence of the rust hyphae in the apoplast, or to penetration resistance mounted by the rust attacked mesophyll cells. We hypothesized that the rust “primes” the basal defense prior to the mildew infection
Original languageEnglish
Pages (from-to)17-22
JournalPhysiological and Molecular Plant Pathology
Volume77
Issue number1
DOIs
Publication statusPublished - 2012

Keywords

  • f-sp-hordei
  • systemic acquired-resistance
  • erysiphe-graminis
  • induced accessibility
  • powdery mildew
  • leaf rust
  • papilla formation
  • spring barley
  • cell-death
  • inaccessibility

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