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The influence of cranberry floral wax on appressorium formation in colletotrichum fioriniae
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Gager, Joshua David. The influence of cranberry floral wax on appressorium formation in colletotrichum fioriniae. Retrieved from https://doi.org/doi:10.7282/T3TF006Q

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TitleThe influence of cranberry floral wax on appressorium formation in colletotrichum fioriniae
NameGager, Joshua David (author); Oudemans, Peter (chair); Vorsa, Nicholi (internal member); Gianfagna, Thomas (internal member); Lalancette, Norman (internal member); Rutgers University; Graduate School - New Brunswick
Date Created2015
Other Date2015-05 (degree)
SubjectPlant Biology, Colletotrichum, Cranberries--Diseases and pests
Extent1 online resource (ix, 53 p. : ill.)
DescriptionThe effect of cranberry floral wax was tested on appressorium formation rates in Colletotrichum fioriniae, a causal agent of fruit rot on cranberry (Vaccinium macrocarpon). Signaling mechanisms regulating appressorium induction vary by pathosystem, and offer potential targets for fungal control measures. Although studies have been done on close relatives, appressorium formation triggers have not been definitively identified in the C. fioriniae – cranberry system. Surface wax from flowers was extracted in chloroform and some of the chemical constituents of the wax were identified by gas-chromatography-mass spectrometry (GC-MS). Spores of C. fioriniae were incubated with surface wax or with pure identified compound from the wax to assess their effect on appressorium formation. Floral wax induced appressorium formation in as little as six hours. The methyl ester of hexadecanoic acid, a monomer of the plant biopolymer cutin, was identified as a wax component that showed strong stimulatory effects in vitro. This is significant, as it points to fungal cutinase production as a potential target of future disease management strategies on cranberry. In addition, no differences in induction iv were found between waxes extracted from resistant and susceptible host genotypes. Further, although hydrophobicity has been shown to induce appressorial formation in other pathogens, it was ruled out as a stimulus here by tests with hydrophobic paraffin wax. Waxes isolated from cranberry fruit throughout the growing season did not induce appressorium formation, though whether this is due to a lack of stimulatory compounds or the presence of inhibitors was not determined and merits further study.
NoteM.S.
NoteIncludes bibliographical references
Noteby Joshua David Gager
Genretheses, ETD graduate
Persistent URLhttps://doi.org/doi:10.7282/T3TF006Q
Languageeng
CollectionGraduate School - New Brunswick Electronic Theses and Dissertations
Organization NameRutgers, The State University of New Jersey
RightsThe author owns the copyright to this work.
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