Publication Date
2022
Document Type
Thesis
Committee Members
Donald Cipollini, Ph.D. (Advisor); John O. Stireman III, Ph.D. (Committee Member); Volker Bahn, Ph.D. (Committee Member)
Degree Name
Master of Science (MS)
Abstract
Garlic mustard is an invasive Eurasian biennial spreading in deciduous forests of North America. Garlic mustard plants in Ohio can be infected with a strain of Xanthomonas campestris, the causal agent of black rot disease in brassicas. I examined variation in susceptibility to X. campestris among garlic mustard populations, several native wild species, and agricultural crop varieties. Twenty-four garlic mustard populations were universally susceptible to X. campestris, though disease severity varied. Cardamine concatenata and Cardamine diphylla were susceptible but can phenologically escape infection in the field. Of the 14 agricultural crops tested, three cultivars (Raphanus sativus, Brassica rapa var. Rapa Hakurei, and cv - Brassica oleracea var. capitata) were susceptible to the X. campestris strain that infects garlic mustards. Nutrient availability enhanced disease susceptibility and severity, but light had a limited effect. A survey of 31 garlic mustard populations in Ohio, Kentucky, and Indiana revealed that X. campestris is established throughout a 120 km radial distance from Dayton, Ohio. The strain of X. campestris infecting garlic mustard in the Wright State University woods was identified by sequencing as X. campestris pv. incanae.
Page Count
94
Department or Program
Department of Biological Sciences
Year Degree Awarded
2022
Copyright
Copyright 2022, some rights reserved. My ETD may be copied and distributed only for non-commercial purposes and may not be modified. All use must give me credit as the original author.
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License.
ORCID ID
0000-0002-3605-4671
