Transcriptomic and volatile organic compounds analysis of resistance mechanisms and diversity of late blight pathogen populations in the Baltic Sea region ... : Transkriptoomika ja lenduvate orgaaniliste ühendite analüüs resistentsusmehhanismide uurimisel ja kartuli-lehemädaniku tekitaja Läänemere piirkonna populatsioonide mitmekesisus ...
This thesis addressed in part the dynamics and diversity of late blight pathogen populations in unstudied regions (Estonia islands and Pskov region of north-western Russia) by understanding changes in the spatiotemporal variation of the P. infestans population structure, the prevalent reproduction m...
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| Format: | Doctoral or Postdoctoral Thesis |
| Language: | English |
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Estonian University of Life Sciences
2024
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| Online Access: | https://dx.doi.org/10.15159/emu.127 https://dspace.emu.ee//handle/10492/8862 |
| Summary: | This thesis addressed in part the dynamics and diversity of late blight pathogen populations in unstudied regions (Estonia islands and Pskov region of north-western Russia) by understanding changes in the spatiotemporal variation of the P. infestans population structure, the prevalent reproduction mode, genotypic and phenotypic diversity and the impact of transboundary migration and gene flow on the P. infestans population (Paper I and II). Mating type determination, metalaxyl response and SSR marker genotyping of P. infestans isolates were used in the first and second experiments. Our result suggests a predominance of sexual reproduction that may have resulted in the observed high genotypic diversity and a high proportion (> 60%) of unique genotypes in these unstudied regions. Time-dependent changes in metalaxyl response and rapid changes in the pathogen populations with the absence of shared genotypes over the years were observed. Overall, there was a lack of genetic differentiation and an absence of ... |
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