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A Phylogenetic Study of Ferocactus Britton and Rose (Cactaceae: Cactoideae) Jorge Hugo Cota-Sánchez Iowa State University

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A Phylogenetic Study of Ferocactus Britton and Rose (Cactaceae: Cactoideae) Jorge Hugo Cota-Sánchez Iowa State University Iowa State University Capstones, Theses and Retrospective Theses and Dissertations Dissertations 1997 A phylogenetic study of Ferocactus Britton and Rose (Cactaceae: Cactoideae) Jorge Hugo Cota-Sánchez Iowa State University Follow this and additional works at: https://lib.dr.iastate.edu/rtd Part of the Botany Commons, Other Ecology and Evolutionary Biology Commons, Other Genetics and Genomics Commons, and the Plant Breeding and Genetics Commons Recommended Citation Cota-Sánchez, Jorge Hugo, "A phylogenetic study of Ferocactus Britton and Rose (Cactaceae: Cactoideae) " (1997). Retrospective Theses and Dissertations. 11453. https://lib.dr.iastate.edu/rtd/11453 This Dissertation is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State University Digital Repository. It has been accepted for inclusion in Retrospective Theses and Dissertations by an authorized administrator of Iowa State University Digital Repository. For more information, please contact [email protected]. INFORMATION TO USERS This manuscript has been reproduced from the microfihn master. TJMI fihns the text directly from the original or copy submitted. Thus, some thesis and dissertation copies are in typewriter face, while others may be from any type of computer printer. The quality of this reproduction is dependent upon the quality of the copy submitted. Broken or indistinct print, colored or poor quality illustrations and photographs, print bleedthrough, substandard margins, and improper alignment can adversely affect reproduction. In the unlikely event that the author did not send UMI a complete manuscript and there are missing pages, these will be noted. Also, if unauthorized copyright material had to be removed, a note will indicate the deletion. Oversize materials (e.g., maps, drawings, charts) are reproduced by sectioning the original, beginning at the upper left-hand comer and continuing from left to right in equal sections with small overlaps. Each original is also photographed in one ecposure and is included in reduced form at the back of the book. Photographs included in the original manuscript have been reproduced xerographically in this copy. Higher quality 6" x 9" black and white photographic prints are available for any photographs or illustrations appearing in this copy for an additional charge. Contact UMI directly to order. UMI A Bell & Howell Infonnation Company 300 Noith Zed) Road, Ann Aibor MI 48106-1346 USA 313/761-4700 800/521-0600 A phylogenetic study of Ferocactus Britton and Rose (Cactaceae: Cactoideae) by Jorge Hugo Cota-Sanchez A dissertation submitted to the graduate faculty in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Major: Botany (Systematics and Evolution) Major Professors: Robert S. Wallace and Jonathan F. Wendel Iowa State University Ames, Iowa 1997 UMI Number: 9725404 UMI Microform 9725404 Copyright 1997, by UMI Company. All rights reserved. This microform edition is protected against unauthorized copying under Title 17, United States Code. UMI 300 North Zeeb Road Ann Arbor, MI 48103 ii Graduate College Iowa State University This is to certify that the Doctoral dissertation of Jorge Hugo Cota-Sanchez has met the dissertation requirements of Iowa State University Signature was redacted for privacy. Co-Major Professor Signature was redacted for privacy. Co-Major Professor Signature was redacted for privacy. For the Major Program Signature was redacted for privacy. the Graduate College ill TABLE OF CONTENTS CHAPTER ONE. GENERAL INTRODUCTION 1 Statement of Research 1 Dissertation Organization 2 Literature Cited 5 CHAPTER TWO. A REVIEW OF FEROCACTUS BRITTON AND ROSE. 7 Introduction 7 Taxonomic Background 9 Reproductive Biology in Ferocactus 12 Seed Morphology 15 Pollen Morphology 17 Cytological Studies 17 Current Molecular Phylogenetic Knowledge 21 The B iogeography of Ferocactus 29 Conclusions 32 Literature Cited 33 Supplementary References on Ferocactus 54 CHAPTER THREE. CHROMOSOME NUMBERS IN FEROCACTUS (CACTACEAE: CACTOIDEAE) 61 Abstract 61 Introduction 62 Materials and Methods 63 Results 64 Discussion 64 Acknowledgments 66 Literature Cited 67 CHAPTER FOUR. CHLOROPLAST DNA EVIDENCE FOR DIVERGENCE IN FEROCACTUS AND ITS RELATIONSHIPS TO NORTH AMERICAN COLUMNAR CACTI (CACTACEAE: CACTOIDEAE) 74 Abstract 74 Introduction 75 Materials and Methods 78 Results 80 Discussion 82 Acknowledgments 89 Literature Cited 90 Appendix I. Restriction Sites Changes in Taxa Investigated 97 Appendix n. Data Matrix 108 iv CHAPTER FIVE. PHYLOGENETIC RELATIONSfflPS OF FEROCACTUS (CACTACEAE) AND ALLIED TAXA BASED ON SEQUENCES OF NON-CODING DNA 114 Abstract 114 Introduction 115 Materials and Methods 117 Results 121 Discussion 122 Acknowledgments 124 Literature Cited 124 Appendix I. Data Matrix for the 777/16 intron 134 Appendix n. Data Matrix for the Intergenic Spacer between the tmL-tmF genes . 163 CHAPTER SIX. GENERAL CONCLUSIONS 171 Cytological Conclusions 171 Phylogenetic Conclusions 171 Taxonomic Conclusions 173 ACKNOWLEDGMENTS 175 BIOGRAPHICAL SKETCH 176 1 CHAPTER ONE GENERAL INTRODUCTION Statement of Research It is widely accepted that convergent evolution in both vegetative and reproductive structures obscure the assessment of phylogenetic relationships in various plant groups of angiosperms (Rensch, 1959; Gibson and Nobel, 1986). The Cactaceae, a New World plant family, is not an exception to the occurrence of convergent evolution of similar structures in distantly related taxa, e.g., floral attributes such as pollination syndromes, sclerified scales of the pericarpel, and growth habit, among others. In fact, much of the taxonomic confusion and lack of phylogenetic understanding that characterizes this family is due to parallelism, to the overwhelming number of "new" taxa which have been described over the years, and to the lack of fossil records for reconstructing phylogeny and the evolutionary history of the family. The use of molecular techniques in the last decades has been transcendental in the phylogenetic studies of flowering plants. Among these techniques, restriction site analysis and DNA sequencing of coding and non-coding regions of the chloroplast genome (cpDNA) have been useful to infer phylogeny and elucidate evolutionary relationships at different taxonomic levels (Jansen and Palmer, 1987; Palmer et al., 1988; Palmer, 1991; Downie and Palmer, 1992; Chase et al., 1993; Ohnstead and Palmer, 1994; Clark et al., 1995; Downie et al., 1996). These approaches have also been important in the phylogenetic studies of the Cactaceae. Two of the main reasons which justify the application of molecular tools to study cactus phylogeny are: 1) the number of characters generated with molecular methods is much higher than those obtained from morphology, and 2) because of the inherited nature of the molecules, the amount of homoplasy due to convergent evolution is minimal, and thus homology assessment and phylogenetic reconstruction is less problematic. Consequently, as in other major plant groups, 2 molecular tools have provided new and significant insights into the origin and evolution of the major lineages of this important New World plant family. Previous work in molecular systematics of the Cactaceae (Wallace, 1995; Wallace and Forquer, 1995; Dickie, 1996; Cota and Wallace, 1996, in press; Wallace and Cota, 1996) and ongoing molecular phylogenetic studies at different taxonomic levels have proven their effectiveness providing evidence about the origin and evolution of the cactus family and new insight into the patterns of divergence in some lineages. This dissertation describes a phylogenetic study of the genus Ferocactus Britton and Rose (Cactaceae), and includes species representing the major lineages within the genus. In addition, various taxa from within the subfamily Cactoideae (primarily from tribe Cacteae and tribe Pachycereeae) were included in the study to investigate the degree of relationship of Ferocactus with allied genera, particularly with Echinocactus Link and Otto and Stenocactus (K. Schum.) A. W. Hill. Dissertation Organization The main body of this dissertation is organized into four chapters, each consisting of a journal article manuscript. The first manuscript "A review of Ferocactus Britton and Rose" is a book chapter published in 1996 in The Genus Ferocactus: Taxonomy and Ecology, pp. 35-80. The second manuscript," Chromosome numbers in Ferocactus (Cactaceae: Cactoideae)" was published in the journal Cytologia (1996. 61: 431-437) of the Japanese Mendelian Genetics Society. In this paper, Jon P. Rebman and Robert S. Wallace appeared as second and third authors, respectively. The third manuscript, "Chloroplast DNA evidence for divergence in Ferocactus and its relationships to North American columnar cacti (Cactaceae: Cactoideae)" is in press in the journal Systematic Botany and will appear late this year. The fourth manuscript entitled "Phylogenetic relationships of Ferocactus (Cactaceae) and allied taxa based on sequences of non-coding DNA" will be submitted to the journal Molecular Biology and 3 Evolution. Following the last manuscript there is a chapter integrating independent findings and presenting them as the general conclusions of this dissertation. The first paper (book chapter) as the title suggests "A review of Ferocactus Britton and Rose") includes an historical perspective and general account the taxonomic and phylogenetic knowledge of this genus based on an extensive literature review of previous work. New
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