The Genomic Basis of Adaptation in the Barley Fungal Pathogen Rhynchosporium Commune ...
Plant fungal pathogens cause significant damage, jeopardize modern agricultural ecosystems and global food security. Fungal pathogens possess a high evolutionary potential that enables rapid evolution to environmental changes. Despite many evidence pointing to local adaptations in fungal pathogens,...
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| Format: | Text |
| Language: | English |
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ETH Zurich
2018
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| Online Access: | https://dx.doi.org/10.3929/ethz-b-000284275 http://hdl.handle.net/20.500.11850/284275 |
| Summary: | Plant fungal pathogens cause significant damage, jeopardize modern agricultural ecosystems and global food security. Fungal pathogens possess a high evolutionary potential that enables rapid evolution to environmental changes. Despite many evidence pointing to local adaptations in fungal pathogens, the genetic basis underpinning the adaptation processes remains poorly understood. The main objective of this PhD thesis is to study the genetic basis of adaptation in Rhynchosporium commune, the causal agent of the devastating barley scald disease. In this study, we resequenced the whole genome of 125 R. commune isolates collected from nine global populations: Iceland, Norway, Finland, Switzerland, Spain, Ethiopia, USA, New Zealand, and Australia. These populations represent a wide range of climatic conditions and agricultural practices with evident of selection acting on quantitative traits of virulence, thermal adaptation, and fungicide sensitivity. The analysis of population structures using single nucleotide ... |
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