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Natural Selection For Disease Resistance In Hybrid Poplars Targets Stomatal Patterning Traits And Regulatory Genes., Karl Christian Fetter
Natural Selection For Disease Resistance In Hybrid Poplars Targets Stomatal Patterning Traits And Regulatory Genes., Karl Christian Fetter
Graduate College Dissertations and Theses
The evolution of disease resistance in plants occurs within a framework of interacting
phenotypes, balancing natural selection for life-history traits along a continuum of
fast-growing and poorly defended, or slow-growing and well-defended lifestyles. Plant
populations connected by gene flow are physiologically limited to evolving along a
single axis of the spectrum of the growth-defense trade-off, and strong local selection
can purge phenotypic variance from a population or species, making it difficult to
detect variation linked to the trade-off. Hybridization between two species that have
evolved different growth-defense trade-off optima can reveal trade-offs hidden in either
species by introducing phenotypic and …