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TChae Final Thesis.pdf (705.64 KB)

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SEX-LINKED DIFFERENTIAL GENE EXPRESSION IN CARICA PAPAYA

Chae, Taylor
http://rave.ohiolink.edu/etdc/view?acc_num=miami1533049471465913

Abstract Details

2018, Master of Science in Botany, Miami University, Botany.
One path of the evolution of dioecy from hermaphroditism is via mutations at two loci, yet reversions to gynodioecy occur in some plants, including Carica papaya. Papaya has an XY chromosome system and hermaphrodites have a unique Y chromosome (Yh). The sex-determining regions of the Y and Yh chromosomes are nearly identical in nucleotide sequence; however, males and hermaphrodites differ morphologically. I predicted that the morphological differences and the sexual reversion are due to differentially expressed genes (DEGs). I conducted RNA-seq to identify DEGs during different floral developmental stages. Linkage Group 1 (the sex chromosome) was significantly enriched for DEGs compared to the other eleven linkage groups, and most of these genes were found in the pseudoautosomal regions (PAR). Sex-biased genes in papaya can be found on the PARs of the sex chromosomes and may serve as way to resolve sexually antagonistic loci.
Richard Moore (Advisor)
Rob Baker (Committee Member)
Dan Gladish (Committee Member)
62 p.
Botany
Carica papaya; genetics; sex-determination; differential gene expression

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Citations

  • Chae, T. (2018). SEX-LINKED DIFFERENTIAL GENE EXPRESSION IN CARICA PAPAYA [Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami1533049471465913

    APA Style (7th edition)

  • Chae, Taylor. SEX-LINKED DIFFERENTIAL GENE EXPRESSION IN CARICA PAPAYA. 2018. Miami University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=miami1533049471465913.

    MLA Style (8th edition)

  • Chae, Taylor. "SEX-LINKED DIFFERENTIAL GENE EXPRESSION IN CARICA PAPAYA." Master's thesis, Miami University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=miami1533049471465913

    Chicago Manual of Style (17th edition)

miami1533049471465913
389
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This open access ETD is published by Miami University and OhioLINK.