A psbA phylogeny for selected rhodophyceae
- UNCW Author/Contributor (non-UNCW co-authors, if there are any, appear on document)
- Jannine M. Hunt (Creator)
- Institution
- The University of North Carolina Wilmington (UNCW )
- Web Site: http://library.uncw.edu/
- Advisor
- J. Craig Bailey
Abstract: Oligonucleotide primers for PCR amplifying and sequencing the plastid-encoded psbA gene,
which encodes the D1 protein of photosystem II, were developed for red algae. Using these
primers psbA sequences were determined for 18 different species representing 10
phylogenetically diverse red algal orders. The third codon position of the psbA gene is too
variable (= homoplasious, mutationally saturated) to be used to estimate phylogenetic
relationships among the orders investigated here, whereas amino acid sequences are too
conserved. In contrast, analyses including only first and second codon positions yielded trees for
red algae that are, with exceptions, congruent with those obtained for other genes. Comparisons
of sequence divergence values and phylogenetic measures imply that psbA sequences are best
suited for use at the rank of family and below.
A psbA phylogeny for selected rhodophyceae
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Created on 1/1/2009
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Additional Information
- Publication
- Thesis
- A Thesis Submitted to the University of North Carolina at Wilmington in Partial Fulfillment of the Requirement for the Degree of Masters of Science
- Language: English
- Date: 2009
- Keywords
- Gene mapping, Red algae--Genetics, Red algae--Molecular genetics, Red algae--Phylogeny--Molecular aspects
- Subjects
- Red algae -- Molecular genetics
- Gene mapping
- Red algae -- Phylogeny -- Molecular aspects
- Red algae -- Genetics