Skip Navigation



MBE Advance Access published online on January 22, 2004
Molecular Biology and Evolution, doi:10.1093/molbev/msh062
Molecular Biology and Evolution © Society for Molecular Biology and Evolution 2004; all rights reserved
This Article
Right arrow Advance Access manuscript (PDF) Freely available
Right arrow Supplementary Material
Right arrow All Versions of this Article:
21/4/691    most recent
msh062v1
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 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 arrowRequest Permissions
Google Scholar
Right arrow Articles by Brady, S. G.
Right arrow Articles by Danforth, B. N.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Brady, S. G.
Right arrow Articles by Danforth, B. N.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Accepted November 21, 2003
© 2004 Society for Molecular Biology and Evolution

Original Articles

Recent Intron Gain in Elongation Factor-1{alpha} of Colletid Bees (Hymenoptera: Colletidae)

Seán G. Brady 1* and Bryan N. Danforth 1

1 Cornell University, Department of Entomology, Comstock Hall, Ithaca, NY 14853

* To whom correspondence should be addressed. E-mail: brady.sean{at}nmnh.si.edu.


  Abstract

We discovered the presence of a unique spliceosomal intron in the F1 copy of elongation factor-1{alpha} (EF-1{alpha}) restricted to the bee family Colletidae (Hymenoptera: Apoidae). The intron ranges in size from 101 to 1044 base pairs and shows no positional sliding. Our data also demonstrate the complete absence of this intron from exemplars representing all other bee families, as well as from close hymenopteran relatives. A review of the literature finds that this intron is likewise absent from all other arthropods for which data are available. This provides unambiguous evidence for a relatively recent intron insertion event in the colletid common ancestor and, at least in this specific instance, lends support to the introns-late hypothesis. The comparative distribution of this novel intron also supports the monophyly of Colletidae and the exclusion of the Stenotritidae from this family, providing an example of the potential of some introns to act as robust markers of shared descent.

Key Words: elongation factor-1{alpha} (EF-1{alpha}), intron gain, bees, Apiformes, Colletidae, phylogeny


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
 Plant Physiol.Home page
S. Gustavsson, A.-S. Lebrun, K. Norden, F. Chaumont, and U. Johanson
A Novel Plant Major Intrinsic Protein in Physcomitrella patens Most Similar to Bacterial Glycerol Channels
Plant Physiology, September 1, 2005; 139(1): 287 - 295.
[Abstract] [Full Text] [PDF]

Home page
 Mol Biol EvolHome page
V. Krauss, M. Pecyna, K. Kurz, and H. Sass
Phylogenetic Mapping of Intron Positions: A Case Study of Translation Initiation Factor eIF2{gamma}
Mol. Biol. Evol., January 1, 2005; 22(1): 74 - 84.
[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.