Conference presentation
Copper tolerance in Pseudomonas syringae pv. tomato from tomatoes in Queensland, Australia
Science Protecting Public Health (Brisbane, Australia, 26/09/2017 - 28/09/2017)
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Abstract
Bacterial speck (caused by Pseudomonas syringae pv. tomato) and bacterial spot (caused by Xanthomonas spp.) can cause
significant crop damage and loss in tomato and pepper. There are limited pesticide control options available for these diseases,
with copper based bactericides currently the basis of bacterial crop management programs in Australia. Copper bactericides are
used frequently over the entire crop cycle and are also used on many other horticultural crops. Copper tolerant isolates of
bacterial speck and spot have been identified worldwide. In Queensland, both bacterial speck and spot occur on tomato and
bacterial spot on pepper. There are three reports of copper tolerance in bacterial spot and speck in Australia, with tolerance
identified in bacterial spot isolates from pepper in Queensland and in bacterial speck isolates from tomatoes in New South Wales
and Victoria. Queensland produces approximately 60% of Australia’s fresh market tomatoes with climatic conditions facilitating
year round production in some areas. These producers are increasingly reporting a reduction in the efficacy of copper based
sprays for bacterial disease control in tomatoes. Despite this there have been no studies undertaken to determine if copper
tolerant P. syringae pv. tomato are present on tomatoes in Queensland. In this study copper tolerance screening methodology
for P. syringae pv. tomato were analysed and tested, isolates from tomato producing regions in Queensland and some other
Australian states were screened for tolerance, multiplex diagnostic testing for tolerance was explored and genome sequence
analysis of Australian P. syringae pv. tomato. The findings of this study have important implications for Queensland tomato
producers and highlights the need to adapt bacterial disease management strategies to control copper resistance development.
Details
- Title
- Copper tolerance in Pseudomonas syringae pv. tomato from tomatoes in Queensland, Australia
- Creators
- K Griffin - Central Queensland UniversityP Brown - Central Queensland UniversityC Gambley - Central Queensland University
- Conference
- Science Protecting Public Health (Brisbane, Australia, 26/09/2017 - 28/09/2017)
- Identifiers
- 991013009497102368
- Academic Unit
- Faculty of Science and Engineering
- Language
- English
- Resource Type
- Conference presentation