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.
","abstract_html":"<p>Rising atmospheric carbon dioxide (CO<sub>2</sub>) may affect plant/pathogen interactions. This study focused on the effects of elevated CO<sub>2</sub> on Root-Knot Nematode (<em>Meloidogyne arenaria</em>) and Tobacco Mosaic Virus (TMV) infection in genetically resistant versus susceptible tomatoes (<em>Solanum lycopersicum</em>). Both resistant and susceptible tomatoes were grown in chambers with either ambient CO<sub>2</sub> or CO<sub>2 </sub>elevated to 750 ppm and infected with <em>M. arenaria</em> or TMV. Measurements were taken at regular intervals to determine the effects of the pathogens on the plants. Resistant plants infected <em>with M. arenaria</em> maintained resistance while susceptible plants remained susceptible at both CO<sub>2</sub> levels. Resistant plants inoculated with TMV maintained their resistance in both CO<sub>2</sub> levels. Susceptible plants inoculated with TMV took longer to demonstrate infection in elevated CO<sub>2</sub>.</p>","abstract_has_math":false,"creators":["Nicholas, Angie"],"institution":null,"degree_name":"Master of Science - Biology","degree_level":"Thesis","degree_discipline":"Biology","degree_department":null,"school":null,"contributors":["Robert J. Wiggers","Dennis A. Gravatt","Josephine Taylor"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2020,"date_issued":"2020-05-01T07:00:00Z","date_published":"2020-05-01T07:00:00Z","updated_at":"2026-07-24T04:30:30Z","subjects":["carbon dioxide","Tobacco Mosaic Virus","Root-Knot Nematodes","tomatoes","genetic resistance","Plant Biology","Plant Pathology"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://scholarworks.sfasu.edu/etds/306","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Robert J. Wiggers","Dennis A. Gravatt","Josephine Taylor"]},{"key":"dc:creator","label":"Author","values":["Nicholas, Angie"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.available","label":"Dc Date Available","values":["2020-05-08T07:00:00Z"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Biology"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science - Biology"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["carbon dioxide","Tobacco Mosaic Virus","Root-Knot Nematodes","tomatoes","genetic resistance","Plant Biology","Plant Pathology"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://scholarworks.sfasu.edu/etds/306"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["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.
"]},{"key":"dc:title","label":"Title","values":["Effects of Increased Atmospheric Carbon Dioxide Levels on Tobacco Mosaic Virus and Root-Knot Nematodes in Genetically Resistant and Susceptible Tomato Plants"]}]}],"canonical_facts":{"dc:contributor":["Robert J. Wiggers","Dennis A. Gravatt","Josephine Taylor"],"dc:creator":["Nicholas, Angie"],"dc:date.available":["2020-05-08T07:00:00Z"],"dc:description.abstract":["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.
"],"dc:identifier":["https://scholarworks.sfasu.edu/etds/306"],"dc:subject":["carbon dioxide","Tobacco Mosaic Virus","Root-Knot Nematodes","tomatoes","genetic resistance","Plant Biology","Plant Pathology"],"dc:title":["Effects of Increased Atmospheric Carbon Dioxide Levels on Tobacco Mosaic Virus and Root-Knot Nematodes in Genetically Resistant and Susceptible Tomato Plants"],"thesis:degree_discipline":["Biology"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["Master of Science - Biology"]},"updated_at":"2026-07-24T04:30:30Z"}