2013 4th Quizzes. What are some of the features of pathogen dispersal e.g. what determines dispersal range and how would you describe the pattern of spore dilution How can you rapidly provide data to suggest an epidemic is caused by an infectious disease
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Resistance: no disease
between the introduction and
the expansion of a microbe.
That is when Transmission>
Normally, invasions are
identifiable only after the Lag
The weblike structure of fungi, usually immersed in the soil or in plant matter is involved in an essential symbiosis that greatly enhances the ability of plants to grow
Fungus absorbs nutrients for plants
Plant gives fungus carbohydrates it produces via photosynthesis
Endophytic fungi (fungi that reside inside plant without apparent symptoms) from lower altitudes were more competitive with biological control Colletotrichum and limited its effect
However, fungal communities substantially different at different altitudes. Lower altitude communities prevent efficacy of biological control
Invasive Forest Pathogens (IFPs) increased exponentially in the last four decades. Until 1919, IFPs already present moved across Europe. Then, new IFPs were introduced mainly from North America, and recently from Asia. Hybrid pathogens also appeared. Countries with a wider range of environments, higher human impact or international trade hosted more IFPs. Rainfall influenced the diffusion rates. Environmental conditions of the new and original ranges and systematic and ecologica lattributes affected invasiveness.