Skip Navigation


MBE Advance Access originally published online on June 27, 2003
This Article
Right arrow Full Text Freely available
Right arrow FREE Full Text (PDF) Freely available
Right arrow All Versions of this Article:
20/9/1480    most recent
msg156v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in ISI Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Search for citing articles in:
ISI Web of Science (13)
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Vigouroux, Y.
Right arrow Articles by Doebley, J.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Vigouroux, Y.
Right arrow Articles by Doebley, J.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Mol. Biol. Evol. 20(9):1480-1483. 2003
DOI: 10.1093/molbev/msg156
© 2003 by the Society for Molecular Biology and Evolution. ISSN: 0737-4038

Directional Evolution for Microsatellite Size in Maize

Yves Vigouroux*, Yoshihiro Matsuoka{dagger} and John Doebley*,

* Department of Genetics, University of Wisconsin, Madison
{dagger} Fukui Prefectural University, Matsuoka-Cho, Yoshida-gun, Fukui, Japan

E-mail: jdoebley{at}wisc.edu.

Directional evolution in microsatellites is the tendency for microsatellites either to increase or to decrease in size over time between populations. We analyzed 99 microsatellite loci in a sample of 193 maize plants representing the entire pre-Columbian range of this crop for evidence of directional evolution. We took advantage of the known phylogeographic history of maize with the independent movement of maize from its ancestral location in Mexico to North and South America. We show that there is an increase in the average allele size of microsatellites in the geographically derived North and South American groups relative to the ancestral Mexican group. We also show that there is a negative correlation between average allele size and altitude in all three groups. Directional evolution in maize microsatellites can be explained by changes in the mutation rate over time and space, changes in the degree of mutational bias to a larger allele, demographic differences between the ancestral and geographically derived populations, and/or scenarios involving selection on microsatellite size. The occurrence of directional evolution for microsatellite size indicates that the estimation of population parameters with microsatellite data in maize should be done with caution.

Key Words: simple sequence repeat • SSR • genome size • Zea • mutation rate


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 Brief BioinformHome page
Y. Kim and T. Wiehe
Simulation of DNA sequence evolution under models of recent directional selection
Brief Bioinform, January 1, 2009; 10(1): 84 - 96.
[Abstract] [Full Text] [PDF]

Home page
 GeneticsHome page
O. Paun and E. Horandl
Evolution of Hypervariable Microsatellites in Apomictic Polyploid Lineages of Ranunculus carpaticola: Directional Bias at Dinucleotide Loci
Genetics, September 1, 2006; 174(1): 387 - 398.
[Abstract] [Full Text] [PDF]

Home page
 GeneticsHome page
A. J. Garris, T. H. Tai, J. Coburn, S. Kresovich, and S. McCouch
Genetic Structure and Diversity in Oryza sativa L.
Genetics, March 1, 2005; 169(3): 1631 - 1638.
[Abstract] [Full Text] [PDF]

Home page
 GeneticsHome page
Y. Vigouroux, S. Mitchell, Y. Matsuoka, M. Hamblin, S. Kresovich, J. S. C. Smith, J. Jaqueth, O. S. Smith, and J. Doebley
An Analysis of Genetic Diversity Across the Maize Genome Using Microsatellites
Genetics, March 1, 2005; 169(3): 1617 - 1630.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Bot.Home page
C. Dobes, T. Mitchell-Olds, and M. A. Koch
Intraspecific diversification in North American Boechera stricta (= Arabis drummondii), Boechera xdivaricarpa, and Boechera holboellii (Brassicaceae) inferred from nuclear and chloroplast molecular markers--an integrative approach
Am. J. Botany, December 1, 2004; 91(12): 2087 - 2101.
[Abstract] [Full Text] [PDF]


Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.