Open AccessThe Sex Chromosomes of Silene latifolia Revisited and Revised
Author(s) -
Martina Lengerová,
Richard C. Moore,
Sarah Grant,
Boris Vyskot
Publication year - 2003
Publication title -
genetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.792
H-Index - 246
eISSN - 1943-2631
pISSN - 0016-6731
DOI - 10.1093/genetics/165.2.935
Subject(s) - pseudoautosomal region , biology , meiosis , homologous chromosome , genetics , silene , y chromosome , chromosome , fluorescence in situ hybridization , x chromosome , evolutionary biology , gene
Classical studies have established that, during meiosis, the X and Y chromosomes of the model dioecious plant Silene latifolia pair over a region at the ends of their q arms. We used fluorescence in situ hybridization of two molecular markers to demonstrate that this widely accepted model is incorrect. From these data we conclude that the homologous arm of the X chromosome is the p arm and that of the Y chromosome is the q arm. The establishment of the proper orientation of the pseudoautosomal region is essential for mapping and evolutionary studies.