Karina Griffin

Karina Griffin
School of Health, Medical and Applied Sciences
Field of Research:
Agricultural and Veterinary Sciences
Professor Philip Brown; Dr Jady Li
Student Type:
Doctor of Philosophy

Contact Details


Research Details

Thesis Name

Copper-tolerance in Pseudomonas syringae pv. tomato isolates from tomato crops in Australia

Thesis Abstract

P. syringae pv. tomato causes bacterial speck disease in tomato crops. This disease can cause significant crop losses in tomato growing regions across Australia and the world. There are limited control options for producers, with copper products forming the basis of management programs. However, globally pesticide resistance to copper is a problem in plant bacteria.

Why my research is important/Impacts

My study is the first systematic report confirming there is copper tolerance/resistance in this bacterial pathogen in Queensland, Australia, and the first study investigating the genetic basis of this resistance in Australian isolates. Results highlight that commercial Eastern Australian tomato producers need to alter their bacterial disease management programs to moderate copper resistance development. Reducing the use of copper based products would also have significant environmental benefits, as copper accumulation in soils can be problematic.


Queensland Department of Agriculture and Fisheries


Australian Government Research Training Program (RTP) Scholarship