Journal article
Multiple introductions from multiple sources: invasion patterns for an important Eucalyptus leaf pathogen
Ecology and Evolution, Vol.5(18), pp.4210-4220
2015
Abstract
Many population studies on invasive plant pathogens are undertaken without knowing the center of origin of the pathogen. Most leaf pathogens of Eucalyptus originate in Australia and consequently with indigenous populations available, and it is possible to study the pathways of invasion. Teratosphaeria suttonii is a commonly occurring leaf pathogen of Eucalyptus species, naturally distributed in tropical and subtropical regions of eastern Australia where it is regarded as a minor pathogen infecting older leaves; however, repeated infections, especially in exotic plantations, can result in severe defoliation and tree deaths. Nine polymorphic microsatellite markers were used to assess the genetic structure of 11 populations of T. suttonii of which four where from within its native range in eastern Australia and the remaining seven from exotic Eucalyptus plantations. Indigenous populations exhibited high allele and haplotype diversity, predominantly clonal reproduction, high population differentiation, and low gene flow. The diversity of the invasive populations varied widely, but in general, the younger the plantation industry in a country or region, the lower the diversity of T. suttonii. Historical gene flow was from Australia, and while self-recruitment was dominant in all populations, there was evidence for contemporary gene flow, with South Africa being the most common source and Uruguay the most common sink population. This points distinctly to human activities underlying long-distance spread of this pathogen, and it highlights lessons to be learned regarding quarantine.
Details
- Title
- Multiple introductions from multiple sources: invasion patterns for an important Eucalyptus leaf pathogen
- Authors/Creators
- M. Taole (Author/Creator) - National University of LesothoW. Bihon (Author/Creator) - University of PretoriaB.D. Wingfield (Author/Creator) - University of PretoriaM.J. Wingfield (Author/Creator) - Murdoch UniversityT.I. Burgess (Author/Creator) - Department of Genetics Forestry and Agriculture Biotechnology Institute (FABI) University of Pretoria Pretoria 0002 South Africa ; School of Veterinary and Life Sciences Murdoch University Murdoch WA 6150 Australia.
- Publication Details
- Ecology and Evolution, Vol.5(18), pp.4210-4220
- Publisher
- Wiley-Blackwell
- Identifiers
- 991005545344707891
- Copyright
- © 2015 Published by John Wiley & Sons Ltd.
- Murdoch Affiliation
- School of Veterinary and Life Sciences
- Language
- English
- Resource Type
- Journal article
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InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.97 Plant Pathology
- 3.97.1173 Hyphomycetes
- Web Of Science research areas
- Ecology
- Evolutionary Biology
- ESI research areas
- Environment/Ecology