Document Detail

X linkage of AP3A, a homolog of the Y-linked MADS-box gene AP3Y in Silene latifolia and S. dioica.
MedLine Citation:
PMID:  21533056     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: The duplication of autosomal genes onto the Y chromosome may be an important element in the evolution of sexual dimorphism. A previous cytological study reported on a putative example of such a duplication event in a dioecious tribe of Silene (Caryophyllaceae): it was inferred that the Y-linked MADS-box gene AP3Y originated from a duplication of the reportedly autosomal ortholog AP3A. However, a recent study, also using cytological methods, indicated that AP3A is X-linked in Silene latifolia.
METHODOLOGY/PRINCIPAL FINDINGS: In this study, we hybridized S. latifolia and S. dioica to investigate whether the pattern of X linkage is consistent among distinct populations, occurs in both species, and is robust to genetic methods. We found inheritance patterns indicative of X linkage of AP3A in widely distributed populations of both species.
CONCLUSIONS/SIGNIFICANCE: X linkage of AP3A and Y linkage of AP3Y in both species indicates that the genes' ancestral progenitor resided on the autosomes that gave rise to the sex chromosomes and that neither gene has moved between chromosomes since species divergence. Consequently, our results do not support the contention that inter-chromosomal gene transfer occurred in the evolution of SlAP3Y from SlAP3A.
Rebecca H Penny; Benjamin R Montgomery; Lynda F Delph
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2011-04-20
Journal Detail:
Title:  PloS one     Volume:  6     ISSN:  1932-6203     ISO Abbreviation:  PLoS ONE     Publication Date:  2011  
Date Detail:
Created Date:  2011-05-02     Completed Date:  2011-08-30     Revised Date:  2013-06-30    
Medline Journal Info:
Nlm Unique ID:  101285081     Medline TA:  PLoS One     Country:  United States    
Other Details:
Languages:  eng     Pagination:  e18972     Citation Subset:  IM    
Department of Biology, Indiana University, Bloomington, Indiana, United States of America.
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MeSH Terms
Base Sequence
Chromosomes, Plant*
DNA Primers
Genes, Plant*
Genetic Linkage*
Polymerase Chain Reaction
Silene / genetics*
Reg. No./Substance:
0/DNA Primers

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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