Document Detail

Extraordinary tertiary constrictions of Tripsacum dactyloides chromosomes: implications for karyotype evolution of polyploids driven by segmental chromosome losses.
MedLine Citation:
PMID:  18558656     Owner:  NLM     Status:  MEDLINE    
Tripsacum dactyloides (2n = 2x = 36) is an ancient tetraploid species. Here we report that T. dactyloides chromosomes contain an extraordinary tertiary constriction, which causes a radical and distant separation of a terminal segment from the chromosome. The relationships between extraordinary tertiary constriction and segmental chromosome loss as well as karyotype evolution of polyploid species are discussed.
Dal-Hoe Koo; Jiming Jiang
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Genetics     Volume:  179     ISSN:  0016-6731     ISO Abbreviation:  Genetics     Publication Date:  2008 Jun 
Date Detail:
Created Date:  2008-06-18     Completed Date:  2008-08-21     Revised Date:  2013-06-05    
Medline Journal Info:
Nlm Unique ID:  0374636     Medline TA:  Genetics     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1119-23     Citation Subset:  IM    
Department of Horticulture, University of Wisconsin, Madison, Wisconsin 53706, USA.
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MeSH Terms
Biological Evolution*
Chromosomes, Plant / genetics*,  ultrastructure
DNA, Plant / genetics
In Situ Hybridization, Fluorescence
Models, Genetic
Poaceae / classification,  genetics*,  ultrastructure
Reg. No./Substance:
0/DNA, Plant; 0/Retroelements

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