Abstract/Details

Phylogenetics and patterns of molecular evolution in amoebozoa


2011 2011

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Abstract (summary)

My dissertation explores several aspects of the relationship between morphological and molecular evolution in amoeboid lineages:

Chapter 1—General Introduction. This chapter provides an overview of the most pressing issues in Amoebozoa phylogeny that are dealt with in the remainder of the thesis.

Chapter 2—Reducing the impact of PCR-mediated recombination in molecular evolution and environmental studies using a new generation high fidelity DNA polymerase. This chapter addresses the methodological difficulty in the study of large gene families, the generation of artifactual sequences by recombination during PCR

Chapter 3—Evolution of the actin gene family in testate lobose amoebae (Arcellinida) is characterized by two distinct clades of paralogs and recent independent expansions. This chapter explores intriging patterns of evolution in the actin gene families of testate amoebae.

Chapter 4—Comprehensive phylogenetic reconstruction of Amoebozoa based on concatenated analysis of SSU-rDNA and actin genes. A deep phylogenetic analyses of the Amoebozoa, enables exploration of well supported taxonomic units within the group.

Chapter 5—Interpreting the evolutionary history of the Tubulinea (Amoebozoa), in light of a multigene phylogeny. This chapter explores a more restrict taxonomic unit within the Amoebozoa—the Tubulinea—based on an expanded sample of genes and taxa.

Chapter 6—The chastity of amoebae: re-evaluating evidence for sex in amoeboid organisms. This chapter asks whether the null-hypothesis that amoebae are asexual is consistent with current phylogenetic evidence.

Indexing (details)


Subject
Molecular biology;
Microbiology;
Evolution and Development
Classification
0307: Molecular biology
0410: Microbiology
0412: Evolution and Development
Identifier / keyword
Biological sciences; Amoebozoa; Arcellinida; Evolution of sex; Gene duplications; Systematics; Tubulinea
Title
Phylogenetics and patterns of molecular evolution in amoebozoa
Author
Lahr, Daniel J. G.
Number of pages
203
Publication year
2011
Degree date
2011
School code
0118
Source
DAI-B 73/03, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9781267043306
Advisor
Katz, Laura A.
Committee member
Anderson, Orwell R.; Hood, Michael E.; Normark, Benjamin B.
University/institution
University of Massachusetts Amherst
Department
Organismic & Evolutionary Biology
University location
United States -- Massachusetts
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
3482713
ProQuest document ID
910839746
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/910839746
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