The Impact of Intraspecific Density on Garlic Mustard Sinigrin Concentration

Harris, Mercedes

Publication:
The Impact of Intraspecific Density on Garlic Mustard Sinigrin Concentration

dc.contributor.advisor	Kristina Stinson
dc.contributor.author	Harris, Mercedes
dc.contributor.department	University of Massachusetts Amherst
dc.contributor.department	Environmental Conservation
dc.date	2024-03-28T19:42:11.000
dc.date.accessioned	2024-04-26T18:24:07Z
dc.date.available	2024-04-26T18:24:07Z
dc.date.submitted	May
dc.date.submitted	2018
dc.description.abstract	Garlic mustard (Alliaria petiolata, Brassicaceae) is a biennial herb that produces glucosinolates, a class of constituent secondary metabolites that defend against herbivores and pathogens allowing it to grow at high densities in invaded regions. The glucosinolate sinigrin is predominant in garlic mustard and aids in its competitiveness as an invasive species. In North America, garlic mustard can grow at high densities and form dense monocultures which may increase its apparency to herbivores and therefore increase its sinigrin production. I measured leaf sinigrin concentration in garlic mustard populations of different densities in the field and in greenhouse experiments to evaluate the response of sinigrin concentration and growth to density and light. Sinigrin concentrations of second-year plants were negatively correlated with growth metrics across all field densities; indicating a cost to sinigrin production. In the greenhouse density experiment with high and low rosette stem densities, sinigrin differed significantly by rosette density category. A factorial greenhouse experiment with light and density treatments discerned significant differences in sinigrin concentration by density. These findings suggest that sinigrin concentration may be influenced by intraspecific density across different light environments.
dc.description.degree	Master of Science (M.S.)
dc.identifier.doi	https://doi.org/10.7275/11938341
dc.identifier.orcid	N/A
dc.identifier.uri	https://hdl.handle.net/20.500.14394/33684
dc.relation.url	https://scholarworks.umass.edu/cgi/viewcontent.cgi?article=1669&context=masters_theses_2&unstamped=1
dc.source.status	published
dc.subject	Garlic mustard
dc.subject	Glucosinolates
dc.subject	Sinigrin
dc.subject	Defense
dc.subject	Density
dc.subject	Apparency
dc.subject	Plant Sciences
dc.title	The Impact of Intraspecific Density on Garlic Mustard Sinigrin Concentration
dc.type	openaccess
dc.type	article
dc.type	thesis
digcom.contributor.author	isAuthorOfPublication\|email:mercedesharr@umass.edu\|institution:University of Massachusetts Amherst\|Harris, Mercedes
digcom.identifier	masters_theses_2/647
digcom.identifier.contextkey	11938341
digcom.identifier.submissionpath	masters_theses_2/647
dspace.entity.type	Publication