Abstract:
:Dioecious Silene latifolia evolved heteromorphic sex chromosomes within the last ten million years, making it a species of choice for studies of the early stages of sex chromosome evolution in plants. About a dozen genes have been isolated from its sex chromosomes and basic genetic and deletion maps exist for the X and Y chromosomes. However, discrepancies between Y chromosome maps led to the proposal that individual Y chromosomes may differ in gene order. Here, we use an alternative approach, with fluorescence in situ hybridization (FISH), to locate individual genes on S. latifolia sex chromosomes. We demonstrate that gene order on the Y chromosome differs between plants from two populations. We suggest that dynamic gene order may be a general property of Y chromosomes in species with XY systems, in view of recent work demonstrating that the gene order on the Y chromosomes of humans and chimpanzees are dramatically different.
journal_name
Chromosomajournal_title
Chromosomaauthors
Howell EC,Armstrong SJ,Filatov DAdoi
10.1007/s00412-011-0311-3subject
Has Abstractpub_date
2011-06-01 00:00:00pages
287-96issue
3eissn
0009-5915issn
1432-0886journal_volume
120pub_type
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