Effects of Increased Atmospheric Carbon Dioxide Levels on Tobacco Mosaic Virus and Root-Knot Nematodes in Genetically Resistant and Susceptible Tomato Plants

<p>Rising atmospheric carbon dioxide (CO₂) may affect plant/pathogen interactions. This study focused on the effects of elevated CO₂ 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 CO₂ or CO₂elevated 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 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.</p>

Name thesis:degree_name

Master of Science - Biology

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Biology

Year dc:date.available

2020

Author dc:creator

• Nicholas, Angie

Contributors dc:contributor

• Robert J. Wiggers
• Dennis A. Gravatt
• Josephine Taylor

• carbon dioxide
• Tobacco Mosaic Virus
• Root-Knot Nematodes
• tomatoes
• genetic resistance
• Plant Biology
• Plant Pathology

Repository record dc:identifier

https://scholarworks.sfasu.edu/etds/306

OAI identifier oai:identifier

oai:scholarworks.sfasu.edu:etds-1344