The Effects of Dispersal and Pollination on Plantaginaceae Diversification

Simple item page
atmire.migration.oldid4356
dc.contributor.advisorVamosi, Jana
dc.contributor.authorOgutcen, Ezgi
dc.contributor.committeememberHarder, Lawrence
dc.contributor.committeememberRogers, Sean
dc.contributor.committeememberZelenitsky, Darla
dc.contributor.committeememberCota-Sanchez, Hugo
dc.date.accessioned2016-05-04T15:52:48Z
dc.date.available2016-05-04T15:52:48Z
dc.date.issued2016
dc.date.submitted2016en
dc.description.abstractThe rich diversity of flowering plants can be explained by a variety of mechanisms, including geographical distribution, range expansion, and floral variance, which correlates with different biotic pollination forms. Plantaginaceae is an ideal model to examine these mechanisms providing the angiosperm diversity, as the family has diverse distribution patterns both in the Old World and the New World, and the family has representatives of many different pollination syndromes. Using molecular phylogenetics, ancestral reconstructions, and phylogenetic modeling and hypothesis testing, this study aimed to investigate the factors affecting the macroevolution of the angiosperm family Plantaginaceae. With 683 species from 72 genera, and a total of 6996 characters from 5 different molecular markers, the phylogenetic reconstruction revealed that Plantaginaceae have 12 strongly supported monophyletic tribes. The family was inferred to have a New World origin, and experienced several long-distance dispersal events between the Old World and the New World. In some cases, these long-distance dispersals were linked to chromosome number changes in the family. Sympatric speciation was shown to be a significant diversification mode in the family, which had some heterogeneity in terms of speciation rates among the tribes. These diversification patterns were not correlated with geographic distribution, as diversification rates in the Old World and the New World were similar. However, long-distance dispersals are found to be the main drivers of speciation within the family. Lastly, pollination was shown to have no effect on diversification in the tribe Antirrhineae In summary, this study investigated the diversification patterns within the diverse angiosperm family Plantaginaceae. Since its origin in the New World approximately 48.81 mya, the family has experienced several long-distance dispersal events between the Old World and the New World. Along with the changes in chromosome numbers, long-distance dispersal was found to be a strong contributor to the diversity in the family.en_US
dc.identifier.citationOgutcen, E. (2016). The Effects of Dispersal and Pollination on Plantaginaceae Diversification (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/28100en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/28100
dc.identifier.urihttp://hdl.handle.net/11023/2958
dc.language.isoeng
dc.publisher.facultyGraduate Studies
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subjectBotany
dc.subjectEcology
dc.subject.classificationPlant Evolutionen_US
dc.subject.classificationDiversificationen_US
dc.subject.classificationSpeciationen_US
dc.subject.classificationDispersalen_US
dc.subject.classificationPollinationen_US
dc.subject.classificationBiogeographyen_US
dc.subject.classificationPlantaginaceaeen_US
dc.titleThe Effects of Dispersal and Pollination on Plantaginaceae Diversification
dc.typedoctoral thesis
thesis.degree.disciplineBiological Sciences
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameDoctor of Philosophy (PhD)
ucalgary.item.requestcopytrue
Files
Collections
Open Theses and Dissertations