SIM
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Stud Mycol 59(1): 1-10 2007
DOI: 10.3114/sim.2007.59.01
Copyright © 2007 CBS Fungal Biodiversity Centre
This Article
Free via Open Access: OA
Right arrow OA Full Text
Right arrow Full Text (PDF)
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 Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Geiser, D.M.
Right arrow Articles by Samson, R.A.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Geiser, D.M.
Right arrow Articles by Samson, R.A.

You are free to share - to copy, distribute and transmit the work, under the following conditions:

Attribution:  You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work).

Non-commercial:  You may not use this work for commercial purposes.

No derivative works:  You may not alter, transform, or build upon this work.

For any reuse or distribution, you must make clear to others the license terms of this work, which can be found at http://creativecommons.org/licenses/by-nc-nd/3.0/legalcode. Any of the above conditions can be waived if you get permission from the copyright holder. Nothing in this license impairs or restricts the author's moral rights.

The current status of species recognition and identification in Aspergillus

D.M. Geiser1,*, M.A. Klich2, J.C. Frisvad3, S.W. Peterson4, J. Varga5,6 and R.A. Samson5

1 Department of Plant Pathology, Pennsylvania State University, University Park 16802, U.S.A.
2 USDA, ARS, Southern Regional Research Center, 1100 Robert E. Lee Blvd., New Orleans, Louisiana 70124, U.S.A.
3 BioCentrum-DTU, Building 221, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
4 Microbial Genomics and Bioprocessing Research Unit, National Center for Agricultural Utilization Research, 1815 N. University Street, Peoria, IL 61604, U.S.A.
5 CBS Fungal Biodiversity Centre, Uppsalalaan 8, NL-3584 CT Utrecht, The Netherlands
6 Department of Microbiology, Faculty of Sciences, University of Szeged, H-6701 Szeged, P.O. Box 533, Hungary

* Correspondence: David Geiser, dgeiser{at}psu.edu

The species recognition and identification of aspergilli and their teleomorphs is discussed. A historical overview of the taxonomic concepts starting with the monograph of Raper & Fennell (1965) is given. A list of taxa described since 2000 is provided. Physiological characters, particularly growth rates and the production of extrolites, often show differences that reflect phylogenetic species boundaries and greater emphasis should be placed on extrolite profiles and growth characteristics in species descriptions. Multilocus sequence-based phylogenetic analyses have emerged as the primary tool for inferring phylogenetic species boundaries and relationships within subgenera and sections. A four locus DNA sequence study covering all major lineages in Aspergillus using genealogical concordance theory resulted in a species recognition system that agrees in part with phenotypic studies and reveals the presence of many undescribed species not resolved by phenotype. The use of as much data from as many sources as possible in making taxonomic decisions is advocated. For species identification, DNA barcoding uses a short genetic marker in an organism"s DNA to quickly and easily identify it to a particular species. Partial cytochrome oxidase subunit 1 sequences, which are used for barcoding animal species, were found to have limited value for species identification among black aspergilli. The various possibilities are discussed and at present partial β-tubulin or calmodulin are the most promising loci for Aspergillus identification. For characterising Aspergillus species one application would be to produce a multilocus phylogeny, with the goal of having a firm understanding of the evolutionary relationships among species across the entire genus. DNA chip technologies are discussed as possibilities for an accurate multilocus barcoding tool for the genus Aspergillus.

Keywords multolocus phylogenetics / polyphasic taxonomy / species identification / species recognition




This article has been cited by other articles:


Home page
 SIMHome page
R.A. Samson, P. Noonim, M. Meijer, J. Houbraken, J.C. Frisvad, and J. Varga
Diagnostic tools to identify black aspergilli.
Stud Mycol, January 1, 2007; 59: 129 - 145.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2007 by the CBS Fungal Biodiversity Centre.