Blackberry and raspberry are alternative resistance sources to fire blight

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ÇALIŞ Ö., ÇEKİÇ Ç., Kara S., Ertekin D. C.

PHYTOPROTECTION, vol.97, no.1, pp.12-16, 2017 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 97 Issue: 1
  • Publication Date: 2017
  • Doi Number: 10.7202/1040510ar
  • Journal Name: PHYTOPROTECTION
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED)
  • Page Numbers: pp.12-16
  • Keywords: fire blight, resistance, wild blackberry, wild raspberry, ERWINIA-AMYLOVORA, MANAGEMENT, CULTIVARS, MALUS
  • Akdeniz University Affiliated: Yes

Abstract

Erwinia amylovora causes fire blight mainly on pear, apple and quince trees. This bacterial pathogen also infects other Rosaceous plants, such as blackberry and raspberry. A race structure was established between an isolate of E. amylovora and berries using 40 wild blackberry and 7 wild raspberry genotypes. In pathogenicity tests, wild blackberry and raspberry genotypes had three phenotypic reactions: enhanced susceptibility, moderate susceptibility and resistance. We noted a higher bacterial growth of over 300 x 10(9) cfu mL(-1) in plants with enhanced susceptibility, with resistant genotypes showing a bacterial growth of around 150 x 109 cfu m-1. These results are also associated with symptoms observed at 29 days post-inoculation. This resistance is being evaluated to control fire blight.