Skip to Main Content
Frequently Asked Questions
Submit an ETD
Global Search Box
Need Help?
Keyword Search
Participating Institutions
Advanced Search
School Logo
Files
File List
miami1176983927.pdf (166.41 KB)
ETD Abstract Container
Abstract Header
NifD: Its Evolution and Phylogenetic Use in Cyanobacteria
Author Info
Menke, Sharon M.
Permalink:
http://rave.ohiolink.edu/etdc/view?acc_num=miami1176983927
Abstract Details
Year and Degree
2007, Master of Science, Miami University, Botany.
Abstract
Nitrogen fixation is randomly dispersed throughout prokaryotic lineages, raising the question of its evolution by vertical descent vs. lateral transfer. In this study, the nitrogen fixation gene, nifD, was examined for cyanobacteria. Nucleotide sequence data of nifD from nitrogen-fixing nonheterocystous and heterocystous cyanobacteria was used to generate a phylogenetic tree. The nifD phylogeny was visually compared to 16s ribosomal DNA phylogenies to elucidate the evolution of nifD within the cyanobacteria. It appears that the inheritance of nifD is through vertical descent for most cyanobacteria, with the exception of a possible lateral transfer in Anabaena variabilis. The phylogeny of nifD also provided additional insight into the evolution of the cyanobacteria, supporting previous suggestions that the heterocystous lineage arose from within the nonheterocystous cyanobacteria. The data further corroborates previous data that the nonheterocystous cyanobacteria subsections and genera are polyphyletic suggesting the need for the possible revision of the current classification.
Committee
Susan Barnum (Advisor)
Pages
54 p.
Keywords
cyanobacterial evolution
;
nitrogen fixation
;
nifD
;
cyanobacteria
Recommended Citations
Refworks
EndNote
RIS
Mendeley
Citations
Menke, S. M. (2007).
NifD: Its Evolution and Phylogenetic Use in Cyanobacteria
[Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami1176983927
APA Style (7th edition)
Menke, Sharon.
NifD: Its Evolution and Phylogenetic Use in Cyanobacteria.
2007. Miami University, Master's thesis.
OhioLINK Electronic Theses and Dissertations Center
, http://rave.ohiolink.edu/etdc/view?acc_num=miami1176983927.
MLA Style (8th edition)
Menke, Sharon. "NifD: Its Evolution and Phylogenetic Use in Cyanobacteria." Master's thesis, Miami University, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=miami1176983927
Chicago Manual of Style (17th edition)
Abstract Footer
Document number:
miami1176983927
Download Count:
869
Copyright Info
© 2007, all rights reserved.
This open access ETD is published by Miami University and OhioLINK.