Search ETDs:
Inheritance of chloroplast DNA (cpDNA) in Lobelia siphilitica
Durewicz, Alicia Lynn

2012, BS, Kent State University, College of Arts and Sciences / Department of Biological Sciences.
In plants and animals, offspring typically inherit half of their nuclear genes from each parent, and all of their mitochondrial and chloroplast genes from only one parent (usually from their mothers). However, recent studies have shown evidence of paternal inheritance and bi-parental inheritance of extra-nuclear genes in several species. I investigated patterns of chloroplast inheritance in a native flowering plant, Lobelia siphilitica (Lobeliaceae). Dams from six populations were crossed with sires from twelve populations to track inheritance patterns in the offspring. Fifty-five crosses were examined by sequencing the rps16-psbK region of the chloroplast genome of each individual parent and offspring. I found that offspring matched their mothers 98% of the time (80% of the crosses), suggesting that strict maternal inheritance is predominant in this species. However, I found evidence of heteroplasmy (multiple chloroplast types within individuals) in several parents and offspring, and in one cross, paternal inheritance was observed in one third of the offspring. Instances of heteroplasmy and paternal inheritance in offspring were restricted to four crosses, all of them having mothers from a single L. siphilitica population from southern Indiana, and two involving the same mother plant. Understanding the mechanisms and frequency of deviation from strict maternal inheritance is important for interpreting patterns of evolution in natural populations.
Andrea Case, PhD (Advisor)
Soumitra Basu, PhD (Committee Member)
Helen Piontkivska, PhD (Committee Member)
Gail Fraizer, PhD (Committee Member)
62 p.

Recommended Citations

Hide/Show APA Citation

Durewicz, A. (2012). Inheritance of chloroplast DNA (cpDNA) in Lobelia siphilitica. (Electronic Thesis or Dissertation). Retrieved from

Hide/Show MLA Citation

Durewicz, Alicia. "Inheritance of chloroplast DNA (cpDNA) in Lobelia siphilitica." Electronic Thesis or Dissertation. Kent State University, 2012. OhioLINK Electronic Theses and Dissertations Center. 21 Apr 2018.

Hide/Show Chicago Citation

Durewicz, Alicia "Inheritance of chloroplast DNA (cpDNA) in Lobelia siphilitica." Electronic Thesis or Dissertation. Kent State University, 2012.


ksuhonors1335812277.pdf (1.48 MB) View|Download