Persistence of the mitochondrial lineage responsible for the Irish potato famine in extant new world phytophthora infestans
The plant pathogen Phytophthora infestans emerged in Europe in 1845, triggering the Irish potato famine and massive European potato crop losses that continued until effective fungicides were widely employed in the 20th century. Today the pathogen is ubiquitous, with more aggressive and virulent stra...
| Main Authors: | , , , , |
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| Format: | Journal Article |
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Oxford University Press
2014
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| Online Access: | http://hdl.handle.net/20.500.11937/10226 |
| _version_ | 1848746174472781824 |
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| author | Martin, M. Ho, S. Wales, N. Ristaino, J. Gilbert, Thomas |
| author_facet | Martin, M. Ho, S. Wales, N. Ristaino, J. Gilbert, Thomas |
| author_sort | Martin, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The plant pathogen Phytophthora infestans emerged in Europe in 1845, triggering the Irish potato famine and massive European potato crop losses that continued until effective fungicides were widely employed in the 20th century. Today the pathogen is ubiquitous, with more aggressive and virulent strains surfacing in recent decades. Recently, complete P. infestans mitogenome sequences from 19th-century herbarium specimens were shown to belong to a unique lineage (HERB-1) predicted to be rare or extinct in modern times. We report 44 additional P. infestans mitogenomes: four from 19th-century Europe, three from 1950s UK, and 37 from modern populations across the New World. We use phylogenetic analyses to identify the HERB-1 lineage in modern populations from both Mexico and South America, and to demonstrate distinct mitochondrial haplotypes were present in 19th-century Europe, with this lineage initially diversifying 75 years before the first reports of potato late blight. |
| first_indexed | 2025-11-14T06:29:04Z |
| format | Journal Article |
| id | curtin-20.500.11937-10226 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:29:04Z |
| publishDate | 2014 |
| publisher | Oxford University Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-102262017-09-13T16:02:18Z Persistence of the mitochondrial lineage responsible for the Irish potato famine in extant new world phytophthora infestans Martin, M. Ho, S. Wales, N. Ristaino, J. Gilbert, Thomas molecular evolution Mitogenomics potato ancient DNA pathogens evolutionary biology The plant pathogen Phytophthora infestans emerged in Europe in 1845, triggering the Irish potato famine and massive European potato crop losses that continued until effective fungicides were widely employed in the 20th century. Today the pathogen is ubiquitous, with more aggressive and virulent strains surfacing in recent decades. Recently, complete P. infestans mitogenome sequences from 19th-century herbarium specimens were shown to belong to a unique lineage (HERB-1) predicted to be rare or extinct in modern times. We report 44 additional P. infestans mitogenomes: four from 19th-century Europe, three from 1950s UK, and 37 from modern populations across the New World. We use phylogenetic analyses to identify the HERB-1 lineage in modern populations from both Mexico and South America, and to demonstrate distinct mitochondrial haplotypes were present in 19th-century Europe, with this lineage initially diversifying 75 years before the first reports of potato late blight. 2014 Journal Article http://hdl.handle.net/20.500.11937/10226 10.1093/molbev/msu086 Oxford University Press unknown |
| spellingShingle | molecular evolution Mitogenomics potato ancient DNA pathogens evolutionary biology Martin, M. Ho, S. Wales, N. Ristaino, J. Gilbert, Thomas Persistence of the mitochondrial lineage responsible for the Irish potato famine in extant new world phytophthora infestans |
| title | Persistence of the mitochondrial lineage responsible for the Irish potato famine in extant new world phytophthora infestans |
| title_full | Persistence of the mitochondrial lineage responsible for the Irish potato famine in extant new world phytophthora infestans |
| title_fullStr | Persistence of the mitochondrial lineage responsible for the Irish potato famine in extant new world phytophthora infestans |
| title_full_unstemmed | Persistence of the mitochondrial lineage responsible for the Irish potato famine in extant new world phytophthora infestans |
| title_short | Persistence of the mitochondrial lineage responsible for the Irish potato famine in extant new world phytophthora infestans |
| title_sort | persistence of the mitochondrial lineage responsible for the irish potato famine in extant new world phytophthora infestans |
| topic | molecular evolution Mitogenomics potato ancient DNA pathogens evolutionary biology |
| url | http://hdl.handle.net/20.500.11937/10226 |