Phylogeography of the wide‐host range panglobal plant pathogen Phytophthora cinnamomi
| Autor: | Cristiana Maia, Tun-Tschu Chang, Eugenio Sanfuentes von Stowasser, Niklaus J. Grünwald, David Guest, Jerry E. Weiland, Alvaro Duran, C. E. Crane, Edward C. Y. Liew, Marília Horta Jung, Valerie J. Fieland, Shankar K. Shakya, N. M. Chi, Thomas Jung, Bruno Scanu, Pham Quang Thu, Chuen-Hsu Fu, Andre Drenth, Brian J. Knaus |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Phytophthora
Population genetics Vietnamese Population Phytophthora cinnamomi Host Specificity Invasive species Empirical Genetics Ecosystem education Pathogen Ecology Evolution Behavior and Systematics Plant Diseases education.field_of_study biology business.industry Ecology Australia biology.organism_classification language.human_language Phylogeography Agriculture language Plant pathogens business |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| Popis: | Various hypotheses have been proposed regarding the origin of the plant pathogen Phytophthora cinnamomi. P. cinnamomi is a devastating, highly invasive soilborne pathogen associated with epidemics of agricultural, horticultural and forest plantations and native ecosystems worldwide. We conducted a phylogeographic analysis of populations of this pathogen sampled in Asia, Australia, Europe, southern and northern Africa, South America, and North America. Based on genotyping-by-sequencing, we observed the highest genotypic diversity in Taiwan and Vietnam, followed by Australia and South Africa. Mating type ratios were in equal proportions in Asia as expected for a sexual population. Simulations based on the index of association suggest a partially sexual, semi-clonal mode of reproduction for the Taiwanese and Vietnamese populations while populations outside of Asia are clonal. Ancestral area reconstruction provides new evidence supporting Taiwan as the ancestral area, given our sample, indicating that this region might be near or at the centre of origin for this pathogen as speculated previously. The Australian and South African populations appear to be a secondary centre of diversity following migration from Taiwan or Vietnam. Our work also identified two panglobal, clonal lineages PcG1-A2 and PcG2-A2 of A2 mating type found on all continents. Further surveys of natural forests across Southeast Asia are needed to definitively locate the actual centre of origin of this important plant pathogen. Agricultural Research Service, Grant/Award Number: 2072-22000-041-00-D; National Institute of Food and Agriculture, Grant/Award Number: 2011-68004-30154 and 2018-67013-27823 info:eu-repo/semantics/publishedVersion |
| Databáze: | OpenAIRE |
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