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Characterization of Three Sexually Sterile Mutants of the Green Alga Chlamydomonas reinhardtii

The focus of this study was to identify the phenotype and genotype of three mutants of the green alga Chlamydomonas reinhardtii. These three mutants, all of the mating type plus, were created by random insertional mutagenesis, and subsequently screened for their inability to form zygotes when mixed with mating type minus gametes. To characterize individual phenotypes, the mutants were observed at each individual stage of the fertilization process, from agglutination through mating structure fusion and zygote formation. All three mutants showed normal progression of fertilization but failed to form fertilization tubules. Following phenotypic characterization, each mutant was subject to TAIL-PCR and DNA sequencing to determine the location of the insert. The location of the insert was determined in two of the three mutants. One mutant was defective in the actin-encoding gene (ida5) while the second was a possible insertion into a portion of mitochondrial DNA.

Identiferoai:union.ndltd.org:TCU/oai:etd.tcu.edu:etd-03162010-120401
Date16 March 2010
CreatorsRoberts, Condred Curtis
ContributorsMichael J Misamore
PublisherTexas Christian University
Source SetsTexas Christian University
LanguageEnglish
Detected LanguageEnglish
Typetext
Formatapplication/pdf, application/octet-stream
Sourcehttp://etd.tcu.edu/etdfiles/available/etd-03162010-120401/
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