Sequencing papaya X and Y chromosomes reveals molecular basis of incipient sex chromosome evolution
نویسندگان
چکیده
Department of Plant Biology, University of Illinois at Urbana–Champaign, Urbana, IL 61801; Texas AgriLife Research Center, Department of Plant Pathology and Microbiology, Texas A&M University, Weslaco, TX 78596; Hawaii Agriculture Research Center, Kunia, HI 96759; Department of Horticulture, University of Wisconsin, Madison, WI 53706; Plant Genome Mapping Laboratory, University of Georgia, Athens, GA 30606; Department of Tropical Plants and Soil Sciences, University of Hawaii, Honolulu, HI 96822; Department of Biological Sciences, Youngstown State University, Youngstown, OH 44555; Advanced Studies in Genomics, Proteomics and Bioinformatics, University of Hawaii, Honolulu, HI 96822; and Institute of Evolutionary Biology, University of Edinburgh, Edinburgh EH9 3JT, United Kingdom
منابع مشابه
Sequencing papaya X and Yh chromosomes reveals molecular basis of incipient sex chromosome evolution.
Sex determination in papaya is controlled by a recently evolved XY chromosome pair, with two slightly different Y chromosomes controlling the development of males (Y) and hermaphrodites (Y(h)). To study the events of early sex chromosome evolution, we sequenced the hermaphrodite-specific region of the Y(h) chromosome (HSY) and its X counterpart, yielding an 8.1-megabase (Mb) HSY pseudomolecule,...
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Sex chromosomes have been studied in many plant and animal species. However, few species are suitable as models to study the evolutionary histories of sex chromosomes. We previously demonstrated that papaya (Carica papaya) (2n = 2x = 18), a fruit tree in the family Caricaceae, contains recently emerged but cytologically heteromorphic X/Y chromosomes. We have been intrigued by the possible prese...
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Papaya is a major fruit crop in the tropics and has recently evolved sex chromosomes. Towards sequencing the papaya sex chromosomes, two bacterial artificial chromosome (BAC) libraries were constructed from papaya male and female genomic DNA. The female BAC library was constructed using restriction enzyme BstY I and consists of 36,864 clones with an average insert size of 104 kb, providing 10.3...
متن کاملMolecular Analysis of Sex Chromosome Evolution in Papaya By
Papaya is a semi-woody tree that produces fruit rich in vitamins and minerals. It is trioecious with male, female, and hermaphrodite plants. Though many theories have been suggested in the past, papaya sex is determined by a pair of nascent sex chromosomes; females have two X chromosomes, males have an X and a Y, and hermaphrodites have an X and a Y, which varies slightly from the male Y. Any c...
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تاریخ انتشار 2012