Date of Award


Degree Type


Degree Name

Master of Science - Biology



First Advisor

Robert J. Wiggers

Second Advisor

Dennis A. Gravatt

Third Advisor

Josephine Taylor

Fourth Advisor

Daniel J. Bennett


Rising atmospheric carbon dioxide (CO2) may affect plant/pathogen interactions. This study focused on the effects of elevated CO2 on Root-Knot Nematode (Meloidogyne arenaria) and Tobacco Mosaic Virus (TMV) infection in genetically resistant versus susceptible tomatoes (Solanum lycopersicum). Both resistant and susceptible tomatoes were grown in chambers with either ambient CO2 or CO2 elevated to 750 ppm and infected with M. arenaria or TMV. Measurements were taken at regular intervals to determine the effects of the pathogens on the plants. Resistant plants infected with M. arenaria maintained resistance while susceptible plants remained susceptible at both CO2 levels. Resistant plants inoculated with TMV maintained their resistance in both CO2 levels. Susceptible plants inoculated with TMV took longer to demonstrate infection in elevated CO2.

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.



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