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Description / Abstract
This study examines the relationship between the epigenetic mechanism of DNA methylation and phenotypic plasticity, a measure of adaptability, in tomatoes and sweet peppers. Groups of plants were treated with zebularine in order to cause experimental demethylation of their genomes and were grown in two different environments in order to determine how phenotypic variability between the two environments differed between normal plants and demethylated plants. Phenotypic plasticity was measured in terms of differences in size, color, development, and mortality. High rates of mortality and stunted growth in plants treated with zebularine during germination suggests that the treatment concentration used was too high for plants to be able to reach maturity, making some measurements of phenotypic plasticity difficult or impossible to compare between control and experimental groups. However, statistically significant differences in phenotypic plasticity were observed in the sizes and colors of tomato plants. It was also determined that treating plants with zebularine after the plants have already reached full-size does not affect phenotypic plasticity.
Arete: The PLNU Honors Journal
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Degree AwardedB.S. in Environmental Science
Awarding InstitutionPoint Loma Nazarene University
Committee MembersMike Dorrell, Lori Carter
Supervisor or ChairDianne Anderson
Peer Reviewed?No
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PLNU Undergraduate Honors Projects 2021-2025
69 Resources
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