Tissue Culture and Quantification of Individual-level Resistance to Anther-smut Disease in Silene Vulgaris
نویسندگان
چکیده
Resistance to systemic diseases is often difficult to measure quantitatively because individuals can be scored only as either diseased or healthy. A technique is described for cloning individuals of Silene vulgaris plants using the tissue culture of seedling meristems. Inoculation of such clonally replicated genotypes within two families shows that segregation of resistance to anther-smut disease caused by the systemic plant pathogen Microbotryum violaceum is highly bimodal. This suggests that resistance to this disease in S. vulgaris may have a relatively simple genetic basis.
منابع مشابه
Life-history strategy defends against disease and may select against physiological resistance
Host ecological traits may limit exposure to infectious disease, thereby generating the wide variation in disease incidence observed between host populations or species. The exclusion of disease by ecological traits may then allow selection to act against physiological defenses when they are costly to maintain in the absence of disease. This study investigates ecological resistance in the Silen...
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The need to prevent and cure emerging diseases often precludes their continuing study in situ. We present studies on the process of disease emergence by host shifts using the model system of anther-smut disease (Microbotryum violaceum) on the plant genus Silene (Caryophyllaceae). This system has little direct social impact, and it is readily amenable to experimental manipulation. Our microevolu...
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